Generated[!!-~]Files/
Release/
__pycache__/
+_site/
arm/
arm64/
bin/
GEM
remote: https://rubygems.org/
specs:
- activesupport (6.0.3.4)
+ activesupport (6.0.3.5)
concurrent-ruby (~> 1.0, >= 1.0.2)
i18n (>= 0.7, < 2)
minitest (~> 5.1)
colorator (1.1.0)
commonmarker (0.17.13)
ruby-enum (~> 0.5)
- concurrent-ruby (1.1.7)
+ concurrent-ruby (1.1.8)
dnsruby (1.61.5)
simpleidn (~> 0.1)
em-websocket (0.5.2)
ffi (>= 1.3.0)
eventmachine (1.2.7)
execjs (2.7.0)
- faraday (1.1.0)
+ faraday (1.3.0)
+ faraday-net_http (~> 1.0)
multipart-post (>= 1.2, < 3)
ruby2_keywords
- ffi (1.13.1)
+ faraday-net_http (1.0.1)
+ ffi (1.15.0)
forwardable-extended (2.6.0)
gemoji (3.0.1)
github-pages (207)
kramdown-parser-gfm (1.1.0)
kramdown (~> 2.0)
liquid (4.0.3)
- listen (3.3.0)
+ listen (3.4.1)
rb-fsevent (~> 0.10, >= 0.10.3)
rb-inotify (~> 0.9, >= 0.9.10)
mercenary (0.3.6)
- mini_portile2 (2.4.0)
+ mini_portile2 (2.5.0)
minima (2.5.1)
jekyll (>= 3.5, < 5.0)
jekyll-feed (~> 0.9)
jekyll-seo-tag (~> 2.1)
- minitest (5.14.2)
+ minitest (5.14.4)
multipart-post (2.1.1)
- nokogiri (1.10.10)
- mini_portile2 (~> 2.4.0)
- octokit (4.19.0)
+ nokogiri (1.11.1)
+ mini_portile2 (~> 2.5.0)
+ racc (~> 1.4)
+ octokit (4.20.0)
faraday (>= 0.9)
sawyer (~> 0.8.0, >= 0.5.3)
pathutil (0.16.2)
forwardable-extended (~> 2.6)
public_suffix (3.1.1)
- rake (13.0.1)
+ racc (1.5.2)
+ rake (13.0.3)
rb-fsevent (0.10.4)
rb-inotify (0.10.1)
ffi (~> 1.0)
rexml (3.2.4)
rouge (3.19.0)
- ruby-enum (0.8.0)
+ ruby-enum (0.9.0)
i18n
- ruby2_keywords (0.0.2)
+ ruby2_keywords (0.0.4)
rubyzip (2.3.0)
safe_yaml (1.0.5)
sass (3.7.4)
sawyer (0.8.2)
addressable (>= 2.3.5)
faraday (> 0.8, < 2.0)
- simpleidn (0.1.1)
+ simpleidn (0.2.1)
unf (~> 0.1.4)
terminal-table (1.8.0)
unicode-display_width (~> 1.1, >= 1.1.1)
thread_safe (0.3.6)
typhoeus (1.4.0)
ethon (>= 0.9.0)
- tzinfo (1.2.8)
+ tzinfo (1.2.9)
thread_safe (~> 0.1)
unf (0.1.4)
unf_ext
unf_ext (0.0.7.7)
unicode-display_width (1.7.0)
- zeitwerk (2.4.1)
+ zeitwerk (2.4.2)
PLATFORMS
ruby
---
layout: default
title: Boundary Analysis
-nav_order: 10
+nav_order: 12
has_children: true
---
<!--
---
layout: default
title: Collation
-nav_order: 9
+nav_order: 11
has_children: true
---
<!--
---
layout: default
title: Conversion
-nav_order: 4
+nav_order: 6
has_children: true
---
<!--
---
layout: default
title: Date/Time
-nav_order: 6
+nav_order: 8
has_children: true
---
<!--
layout: default
title: Coding Guidelines
nav_order: 1
-parent: Misc
+parent: Contributors
---
<!--
© 2020 and later: Unicode, Inc. and others.
### Building cintltst
To compile this test suite using Microsoft Visual C++ (MSVC), follow the
-instructions in `icu4c/source/readme.html#HowToInstall` for building the `allC`
-workspace. This builds the libraries as well as the `cintltst` executable.
+instructions in [How To Build And Install On Windows](../icu4c/build#how-to-build-and-install-on-windows). This builds the libraries as well as the `cintltst` executable.
### Executing cintltst
layout: default
title: Contributions
nav_order: 4
-parent: Misc
+parent: Contributors
---
<!--
© 2020 and later: Unicode, Inc. and others.
layout: default
title: User Guide Editing
nav_order: 5
-parent: Misc
+parent: Contributors
---
<!--
© 2020 and later: Unicode, Inc. and others.
```bash
rbenv init # OR: eval "$(rbenv init -)"
rbenv shell <version-num>
+rbenv versions # verify the specified version is in use
```
To install [Bundler](https://bundler.io/):
```bash
rbenv init # OR: eval "$(rbenv init -)"
rbenv shell <version-num>
+cd <ICU>/docs # change to User Guide docs root directory
bundle update
bundle exec jekyll server
```
---
layout: default
-title: Misc
-nav_order: 15
+title: Contributors
+nav_order: 17
has_children: true
---
<!--
License & terms of use: http://www.unicode.org/copyright.html
-->
-# Development
+# Contributors
-Top-level page for topics for ICU developers. See the subpages listed below for
+Top-level page for topics for contributors to ICU. See the subpages listed below for
details:
[Coding Guidelines](codingguidelines.md)
layout: default
title: Custom ICU4C Synchronization
nav_order: 3
-parent: Misc
+parent: Contributors
---
<!--
© 2020 and later: Unicode, Inc. and others.
layout: default
title: Synchronization
nav_order: 2
-parent: Misc
+parent: Contributors
---
<!--
© 2020 and later: Unicode, Inc. and others.
---
layout: default
title: Formatting
-nav_order: 7
+nav_order: 9
has_children: true
---
<!--
---
layout: default
title: Glossary
+parent: ICU
nav_order: 9000
---
<!--
ICU builds and installs as relatively standard libraries. For details about
building, installing and porting see the [ICU4C
-readme](https://htmlpreview.github.io/?https://github.com/unicode-org/icu/blob/main/icu4c/readme.html) and the
-[ICU4J readme](https://htmlpreview.github.io/?https://github.com/unicode-org/icu/blob/main/icu4j/readme.html).
+readme](../icu4c/) and the
+[ICU4J readme](../icu4j/).
In addition, ICU4C installs several scripts and makefile fragments that help
build other code using ICU.
For C++, note that there are [Recommended Build
-Options](https://htmlpreview.github.io/?https://github.com/unicode-org/icu/blob/main/icu4c/readme.html#RecBuild)
+Options](icu4c/build#recommended-build-options)
(both for normal use and for ICU as system-level libraries) which are not
default simply for compatibility with older ICU-using code.
-Starting with ICU 49, the ICU4C readme has a short section about
+Starting with ICU 49, the ICU4C Readme has a short section about
[User-Configurable
-Settings](https://htmlpreview.github.io/?https://github.com/unicode-org/icu/blob/main/icu4c/readme.html#UserConfig).
+Settings](icu4c/build#user-configurable-settings).
## C++ Makefiles
|**Package**|**Contents**|
|------|--------------------|
|icu-uc|Common (uc) and Data (dt/data) libraries|
-|icu-i18n|Internationalization (in/i18n) library|icu-le [Layout Engine](layoutengine/index.md)|
+|icu-i18n|Internationalization (in/i18n) library|icu-le [Layout Engine](../layoutengine/index.md)|
|icu-lx|Paragraph Layout|
|icu-io|[Ustdio](io/ustdio.md)/[iostream](io/ustream.md) library (icuio)
"icu_50". There is a stable "icu" alias which should be used instead. (Entry
point versioning is only to allow for multiple ICU versions linked into one
program. [It is optional and should be off for system
-libraries.](https://htmlpreview.github.io/?https://github.com/unicode-org/icu/blob/main/icu4c/readme.html#RecBuild))
+libraries.](icu4c/build#recommended-build-options))
By default, and only for backward compatibility, the ICU headers contain a line
`using namespace icu_50;` which makes all ICU APIs visible in/with the global
namespace (and potentially collide with non-ICU APIs there). One of the
[Recommended Build
-Options](https://htmlpreview.github.io/?https://github.com/unicode-org/icu/blob/main/icu4c/readme.html#RecBuild)
+Options](icu4c/build#recommended-build-options)
is to turn this off.
To write forward declarations, use
|English|German|Cyrillic-Serbian|
|--------|--------|-------------|
|cut|ausschneiden|исеци|
-|copy|kopieren|копирајpasteeinfügenзалепи|
+|copy|kopieren|копирај|
+|paste|einfügen|залепи|
The description of the UI, especially user-visible pieces of text, must be kept
together and not embedded in the program's executable code. ICU provides the
[ChoiceFormat](format_parse/messages/index.md) (§) to help with these
occurrences.
-> :point_right: **Note**: *There also might be situations where parts of the sentence change when other
+> :point_right: **Note**: There also might be situations where parts of the sentence change when other
parts of the sentence also change (selecting between singular and plural nouns
-that go after a number is the most common example). *
+that go after a number is the most common example).
#### Measuring Units
--- /dev/null
+---
+layout: default
+title: Release Info
+nav_order: 9
+parent: ICU
+---
+<!--
+© 2020 and later: Unicode, Inc. and others.
+License & terms of use: http://www.unicode.org/copyright.html
+-->
+
+# Release Info
+{: .no_toc }
+
+## Contents
+{: .no_toc .text-delta }
+
+1. TOC
+{:toc}
+
+---
+
+## What Is New In The Current Release?
+
+See the [ICU download page](http://site.icu-project.org/download/) to find the subpage for the current release.
+
+The subpage for the current release will contain information on changes since the last release, bug fixes, known issues, changes to supported platforms and build environments, and migration issues for existing applications migrating from previous ICU releases. The page will also include an API Change Report, both for ICU4C and ICU4J, for a complete list of APIs added, removed, or changed in this release.
+
+Changes in previous releases can also be found the main [ICU download page](http://site.icu-project.org/download) in its version-specific subpages.
+
+## License Information
+
+The ICU projects (ICU4C and ICU4J) are hosted by the [Unicode Consortium](http://www.unicode.org/). The ICU binary and source files are distributed under the [UNICODE DATA FILES AND SOFTWARE LICENSE](http://www.unicode.org/copyright.html). The full copy of the license and third party software licenses are available in [LICENSE](https://github.com/unicode-org/icu/blob/main/icu4j/main/shared/licenses/LICENSE) file included in this package.
\ No newline at end of file
---
layout: default
-title: ICU4C Readme
-nav_order: 8
-parent: ICU
+title: Building ICU4C
+nav_order: 2
+parent: ICU4C
---
<!--
© 2020 and later: Unicode, Inc. and others.
License & terms of use: http://www.unicode.org/copyright.html
-->
-# ICU4C Readme
+# Building ICU4C
{: .no_toc }
## Contents
---
-
-## Introduction
-
-Today's software market is a global one in which it is desirable to develop and maintain one application (single source/single binary) that supports a wide variety of languages. The International Components for Unicode (ICU) libraries provide robust and full-featured Unicode services on a wide variety of platforms to help this design goal. The ICU libraries provide support for:
-
-* The latest version of the Unicode standard
-* Character set conversions with support for over 220 codepages
-* Locale data for more than 300 locales
-* Language sensitive text collation (sorting) and searching based on the Unicode Collation Algorithm (=ISO 14651)
-* Regular expression matching and Unicode sets
-* Transformations for normalization, upper/lowercase, script transliterations (50+ pairs)
-* Resource bundles for storing and accessing localized information
-* Date/Number/Message formatting and parsing of culture specific input/output formats
-* Calendar specific date and time manipulation
-* Text boundary analysis for finding characters, word and sentence boundaries
-
-ICU has a sister project ICU4J that extends the internationalization capabilities of Java to a level similar to ICU. The ICU C/C++ project is also called ICU4C when a distinction is necessary.
-
-## Getting started
-
-This document describes how to build and install ICU on your machine. For other information about ICU please see the following table of links.
-The ICU homepage also links to related information about writing internationalized software.
-
-**Here are some useful links regarding ICU and internationalization in general.**
-
-
-| ICU, ICU4C & ICU4J Homepage | <http://icu-project.org/> |
-| FAQ - Frequently Asked Questions about ICU | <https://unicode-org.github.io/icu/userguide/icufaq/> |
-| ICU User's Guide | <https://unicode-org.github.io/icu/> |
-| How To Use ICU | <https://unicode-org.github.io/icu/userguide/howtouseicu.html> |
-| Download ICU Releases | <http://site.icu-project.org/download> |
-| ICU4C API Documentation Online | <http://icu-project.org/apiref/icu4c/> |
-| Online ICU Demos | <http://demo.icu-project.org/icu-bin/icudemos> |
-| Contacts and Bug Reports/Feature Requests | <http://site.icu-project.org/contacts> |
-
-**Important:** Please make sure you understand the [Copyright and License Information](http://source.icu-project.org/repos/icu/trunk/icu4c/LICENSE).
-
-## What Is New In The Current Release?
-
-See the [ICU download page](http://site.icu-project.org/download/) to find the subpage for the current release, including any other changes, bug fixes, known issues, changes to supported platforms and build environments, and migration issues for existing applications migrating from previous ICU releases.
-
-The subpage for the current release will also include an API Change Report, both for ICU4C and ICU4J, for a complete list of APIs added, removed, or changed in this release.
-
-The list of API changes since the previous ICU4C release is available [here](https://htmlpreview.github.io/?https://raw.githubusercontent.com/unicode-org/icu/main/icu4c/APIChangeReport.html).
-
-Changes in previous releases can also be found on the main [ICU download page](http://site.icu-project.org/download) in its version-specific subpages.
-
-## How To Download the Source Code
-
-There are two ways to download ICU releases:
-
-* **Official Release Snapshot:**
- If you want to use ICU (as opposed to developing it), you should download an official packaged version of the ICU source code. These versions are tested more thoroughly than day-to-day development builds of the system, and they are packaged in zip and tar files for convenient download. These packaged files can be found at [http://site.icu-project.org/download](http://site.icu-project.org/download).
- The packaged snapshots are named `icu-nnnn.zip` or `icu-nnnn.tgz`, where `nnnn` is the version number. The .zip file is used for Windows platforms, while the .tgz file is preferred on most other platforms.
- Please unzip this file.
- > :point_right: **Note**: There may be additional commits on the `maint-*` branch for a particular version that are not included in the prepackaged download files.
-* **GitHub Source Repository:**
- If you are interested in developing features, patches, or bug fixes for ICU, you should probably be working with the latest version of the ICU source code. You will need to clone and checkout the code from our GitHub repository to ensure that you have the most recent version of all of the files. See our [source repository](http://site.icu-project.org/repository) for details.
-
-## ICU Source Code Organization
-
-In the descriptions below, `<ICU>` is the full path name of the ICU directory (the top level directory from the distribution archives) in your file system. You can also view the [ICU Architectural Design](design.md) section of the User's Guide to see which libraries you need for your software product. You need at least the data (`[lib]icudt`) and the common (`[lib]icuuc`) libraries in order to use ICU.
-
-**The following files describe the code drop.**
-
-| File | Description |
-|-------------|----------------------------------------------------------------|
-| readme.html | Describes the International Components for Unicode (this file) |
-| LICENSE | Contains the text of the ICU license |
-
-**The following directories contain source code and data files.**
-
-<table>
-
- <tr>
- <th scope="col">Directory</th>
-
- <th scope="col">Description</th>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>common</b>/</td>
-
- <td>The core Unicode and support functionality, such as resource bundles,
- character properties, locales, codepage conversion, normalization,
- Unicode properties, Locale, and UnicodeString.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>i18n</b>/</td>
-
- <td>Modules in i18n are generally the more data-driven, that is to say
- resource bundle driven, components. These deal with higher-level
- internationalization issues such as formatting, collation, text break
- analysis, and transliteration.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>layoutex</b>/</td>
-
- <td>Contains the ICU paragraph layout engine.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>io</b>/</td>
-
- <td>Contains the ICU I/O library.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>data</b>/</td>
-
- <td>
- <p>This directory contains the source data in text format, which is
- compiled into binary form during the ICU build process. It contains
- several subdirectories, in which the data files are grouped by
- function. Note that the build process must be run again after any
- changes are made to this directory.</p>
-
- <p>If some of the following directories are missing, it's probably
- because you got an official download. If you need the data source files
- for customization, then please download the complete ICU source code from <a
- href="http://site.icu-project.org/repository">the ICU repository</a>.</p>
-
- <ul>
- <li><b>in/</b> A directory that contains a pre-built data library for
- ICU. A standard source code package will contain this file without
- several of the following directories. This is to simplify the build
- process for the majority of users and to reduce platform porting
- issues.</li>
-
- <li><b>brkitr/</b> Data files for character, word, sentence, title
- casing and line boundary analysis.</li>
-
- <li><b>coll/</b> Data for collation tailorings. The makefile
- <b>colfiles.mk</b> contains the list of resource bundle files.</li>
-
- <li><b>locales/</b> These .txt files contain ICU language and
- culture-specific localization data. Two special bundles are
- <b>root</b>, which is the fallback data and parent of other bundles,
- and <b>index</b>, which contains a list of installed bundles. The
- makefile <b>resfiles.mk</b> contains the list of resource bundle
- files. Some of the locale data is split out into the type-specific
- directories curr, lang, region, unit, and zone, described below.</li>
-
- <li><b>curr/</b> Locale data for currency symbols and names (including
- plural forms), with its own makefile <b>resfiles.mk</b>.</li>
-
- <li><b>lang/</b> Locale data for names of languages, scripts, and locale
- key names and values, with its own makefile <b>resfiles.mk</b>.</li>
-
- <li><b>region/</b> Locale data for names of regions, with its own
- makefile <b>resfiles.mk</b>.</li>
-
- <li><b>unit/</b> Locale data for measurement unit patterns and names,
- with its own makefile <b>resfiles.mk</b>.</li>
-
- <li><b>zone/</b> Locale data for time zone names, with its own
- makefile <b>resfiles.mk</b>.</li>
-
- <li><b>mappings/</b> Here are the code page converter tables. These
- .ucm files contain mappings to and from Unicode. These are compiled
- into .cnv files. <b>convrtrs.txt</b> is the alias mapping table from
- various converter name formats to ICU internal format and vice versa.
- It produces cnvalias.icu. The makefiles <b>ucmfiles.mk,
- ucmcore.mk,</b> and <b>ucmebcdic.mk</b> contain the list of
- converters to be built.</li>
-
- <li><b>translit/</b> This directory contains transliterator rules as
- resource bundles, a makefile <b>trnsfiles.mk</b> containing the list
- of installed system translitaration files, and as well the special
- bundle <b>translit_index</b> which lists the system transliterator
- aliases.</li>
-
- <li><b>unidata/</b> This directory contains the Unicode data files.
- Please see <a href=
- "http://www.unicode.org/">http://www.unicode.org/</a> for more
- information.</li>
-
- <li><b>misc/</b> The misc directory contains other data files which
- did not fit into the above categories, including time zone
- information, region-specific data, and other data derived from CLDR
- supplemental data.</li>
-
- <li><b>out/</b> This directory contains the assembled memory mapped
- files.</li>
-
- <li><b>out/build/</b> This directory contains intermediate (compiled)
- files, such as .cnv, .res, etc.</li>
- </ul>
-
- <p>If you are creating a special ICU build, you can set the ICU_DATA
- environment variable to the out/ or the out/build/ directories, but
- this is generally discouraged because most people set it incorrectly.
- You can view the <a href=
- "https://unicode-org.github.io/icu/userguide/icudata">ICU Data
- Management</a> section of the ICU User's Guide for details.</p>
- </td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/test/<b>intltest</b>/</td>
-
- <td>A test suite including all C++ APIs. For information about running
- the test suite, see the build instructions specific to your platform
- later in this document.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/test/<b>cintltst</b>/</td>
-
- <td>A test suite written in C, including all C APIs. For information
- about running the test suite, see the build instructions specific to your
- platform later in this document.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/test/<b>iotest</b>/</td>
-
- <td>A test suite written in C and C++ to test the icuio library. For
- information about running the test suite, see the build instructions
- specific to your platform later in this document.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/test/<b>testdata</b>/</td>
-
- <td>Source text files for data, which are read by the tests. It contains
- the subdirectories <b>out/build/</b> which is used for intermediate
- files, and <b>out/</b> which contains <b>testdata.dat.</b></td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>tools</b>/</td>
-
- <td>Tools for generating the data files. Data files are generated by
- invoking <i><ICU></i>/source/data/build/makedata.bat on Win32 or
- <i><ICU></i>/source/make on UNIX.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>samples</b>/</td>
-
- <td>Various sample programs that use ICU</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>extra</b>/</td>
-
- <td>Non-supported API additions. Currently, it contains the 'uconv' tool
- to perform codepage conversion on files.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/<b>packaging</b>/</td>
-
- <td>This directory contain scripts and tools for packaging the final
- ICU build for various release platforms.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>config</b>/</td>
-
- <td>Contains helper makefiles for platform specific build commands. Used
- by 'configure'.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>allinone</b>/</td>
-
- <td>Contains top-level ICU workspace and project files, for instance to
- build all of ICU under one MSVC project.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/<b>include</b>/</td>
-
- <td>Contains the headers needed for developing software that uses ICU on
- Windows.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/<b>lib</b>/</td>
-
- <td>Contains the import libraries for linking ICU into your Windows
- application.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/<b>bin</b>/</td>
-
- <td>Contains the libraries and executables for using ICU on Windows.</td>
- </tr>
- </table>
-
-
-
-## How To Build And Install ICU
-
-### Recommended Build Options
+## Recommended Build Options
Depending on the platform and the type of installation, we recommend a small number of modifications and build options. Note that C99 compatibility is now required.
```
> :point_right: **Note**: this example shows a relative path to `runConfigureICU`. If you experience difficulty, try using an absolute path to `runConfigureICU` instead.
-#### ICU as a System-Level Library
+### ICU as a System-Level Library
If ICU is installed as a system-level library, there are further opportunities and restrictions to consider. For details, see the _Using ICU as an Operating System Level Library_ section of the [User Guide ICU Architectural Design](https://unicode-org.github.io/icu/userguide/design) chapter.
`runConfigureICU Linux --disable-renaming`
The public header files from this configuration must be installed for applications to include and get the correct entry point names.
-### User-Configurable Settings
+## User-Configurable Settings
ICU4C can be customized via a number of user-configurable settings. Many of them are controlled by preprocessor macros which are defined in the `source/common/unicode/uconfig.h` header file. Some turn off parts of ICU, for example conversion or collation, trading off a smaller library for reduced functionality. Other settings are recommended (see previous section) but their default values are set for better source code compatibility.
In order to change such user-configurable settings, you can either modify the `uconfig.h` header file by adding a specific `#define ...` for one or more of the macros before they are first tested, or set the compiler's preprocessor flags (`CPPFLAGS`) to include an equivalent `-D` macro definition.
-### How To Build And Install On Windows
+## How To Build And Install On Windows
Building International Components for Unicode requires:
3. Run the I/O test suite, `iotest`. To do this: set the active startup project to "iotest", and press Ctrl+F5 to run it. Make sure that it passes without any errors.
8. You are now able to develop applications with ICU by using the libraries and tools in `<ICU>\bin\`. The headers are in `<ICU>\include\` and the link libraries are in `<ICU>\lib\`. To install the ICU runtime on a machine, or ship it with your application, copy the needed components from `<ICU>\bin\` to a location on the system PATH or to your application directory.
-#### Building with other versions of Visual Studio
+### Building with other versions of Visual Studio
The particular version of the MSVC compiler tool-set (and thus the corresponding version of Visual Studio) that is used to compile ICU is determined by the `PlatformToolset` property. This property is stored in two different shared files that are used to set common configuration settings amongst the various ICU `*.vcxproj` project files. For the non-UWP projects, this setting is in the shared file called `Build.Windows.ProjectConfiguration.props` located in the `allinone` directory. For the UWP projects, this setting is in the shared file called `Build.Windows.UWP.ProjectConfiguration.props`, also located in the `allinone` directory.
> :point_right: **Note**: Using older versions of the MSVC compiler is generally not recommended due to the improved support for the C++11 standard in newer versions of the compiler.
-#### Re-targeting the Windows 10 SDK for the UWP projects
+### Re-targeting the Windows 10 SDK for the UWP projects
If the version of the Windows 10 SDK that you have installed does not match the version used by the UWP projects, then you will need to "retarget" them to use the version of the SDK that you have installed instead. There are two ways to do this:
* In Visual Studio you can right-click on the UWP projects in the 'Solution Explorer' and select the option 'Retarget Projects' from the context menu. This will open up a window where you can select the SDK version to target from a drop-down list of the various SDKs that are installed on the machine.
* Alternatively, you can manually edit the shared file called `Build.Windows.UWP.ProjectConfiguration.props` which is located in the `allinone` directory. You will need to change the of the `WindowsTargetPlatformVersion` property to the version of the SDK that you would like to use instead.
-#### Using MSBUILD At The Command Line
+### Using MSBUILD At The Command Line
You can build ICU from the command line instead of using the Visual Studio GUI. Assuming that you have properly installed Visual Studio to support command line building, you should have a shortcut for the "Developer Command Prompt" listed in the Start Menu. (For Visual Studio 2017 you will need to install the "Desktop development with C++" option).
devenv.com source\allinone\allinone.sln /build "Release|x64"
```
-#### Skipping the UWP Projects on the Command Line
+### Skipping the UWP Projects on the Command Line
You can skip (or omit) building the UWP projects on the command line by passing the argument '`SkipUWP=true`' to either MSBUILD or devenv.
You can also use Cygwin with the MSVC compiler to build ICU, and you can refer to the [How To Build And Install On Windows with Cygwin](#how-to-build-and-install-on-windows-with-cygwin) section for more details.
-#### Setting Active Platform
+### Setting Active Platform
Even though you are able to select "x64" as the active platform, if your operating system is not a 64 bit version of Windows, the build will fail. To set the active platform, two different possibilities are:
* Choose "Build" menu, select "Configuration Manager...", and select "Win32" or "x64" for the Active Platform Solution.
* Another way is to select the desired build configuration from "Solution Platforms" dropdown menu from the standard toolbar. It will say "Win32" or "x64" in the dropdown list.
-#### Setting Active Configuration
+### Setting Active Configuration
To set the active configuration, two different possibilities are:
* Choose "Build" menu, select "Configuration Manager...", and select "Release" or "Debug" for the Active Configuration Solution.
* Another way is to select the desired build configuration from "Solution Configurations" dropdown menu from the standard toolbar. It will say "Release" or "Debug" in the dropdown list.
-#### Batch Configuration
+### Batch Configuration
If you want to build the Win32 and x64 platforms and Debug and Release configurations at the same time, choose "Build" menu, and select "Batch Build...". Click the "Select All" button, and then click the "Rebuild" button.
-### How To Build And Install On Windows with Cygwin
+## How To Build And Install On Windows with Cygwin
Building International Components for Unicode with this configuration requires:
7. Optionally, type `make check` to run the test suite, which checks for ICU's functionality integrity (See [testing note](#running-the-tests-from-the-command-line) below).
8. Type `make install` to install ICU. If you used the `--prefix=` option on `configure` or `runConfigureICU`, ICU will be installed to the directory you specified. (See [installation note](#installing-icu) below).
-#### Configuring ICU on Windows
+### Configuring ICU on Windows
Ensure that the order of the PATH is MSVC, Cygwin, and then other PATHs. The configure script needs certain tools in Cygwin (e.g. grep).
* `--enable-static` (Requires that U_STATIC_IMPLEMENTATION be defined in user code that links against ICU's static libraries.)
* `--with-data-packaging=files` (The pkgdata tool currently does not work in this mode. Manual packaging is required to use this mode.)
-### How To Build And Install On UNIX
+## How To Build And Install On UNIX
Building International Components for Unicode on UNIX requires:
```
to install ICU. If you used the `--prefix=` option on `configure` or `runConfigureICU`, ICU will be installed to the directory you specified. (See [installation note](#installing-icu) below).
-#### Configuring ICU
+### Configuring ICU
Type `"./runConfigureICU --help"` for help on how to run it and a list of supported platforms. You may also want to type `"./configure --help"` to print the available configure options that you may want to give `runConfigureICU`. If you are not using the `runConfigureICU` script, or your platform is not supported by the script, you may need to set your `CC`, `CXX`, `CFLAGS` and `CXXFLAGS` environment variables, and type `"./configure"`. HP-UX users, please see this [note regarding HP-UX multithreaded build issues](#using-icu-in-a-multithreaded-environment-on-hp-ux) with newer compilers. Solaris users, please see this [note regarding Solaris multithreaded build issues](#linking-on-solaris).
ICU is built with strict compiler warnings enabled by default. If this causes excessive numbers of warnings on your platform, use the `--disable-strict` option to configure to reduce the warning level.
-#### Running The Tests From The Command Line
+### Running The Tests From The Command Line
You may have to set certain variables if you with to run test programs individually, that is apart from "gmake check". The environment variable **ICU_DATA** can be set to the full pathname of the data directory to indicate where the locale data files and conversion mapping tables are when you are not using the shared library (e.g. by using the .dat archive or the individual data files). The trailing "/" is required after the directory name (e.g. `$Root/source/data/out/` will work, but the value `$Root/source/data/out` is not acceptable). You do not need to set **ICU_DATA** if the complete shared data library is in your library path.
-#### Installing ICU
+### Installing ICU
Some platforms use package management tools to control the installation and uninstallation of files on the system, as well as the integrity of the system configuration. You may want to check if ICU can be packaged for your package management tools by looking into the `packaging` directory. (Please note that if you are using a snapshot of ICU from Git, it is probable that the packaging scripts or related files are not up to date with the contents of ICU at this time, so use them with caution).
-### How To Build And Install On z/OS (OS/390)
+## How To Build And Install On z/OS (OS/390)
You can install ICU on z/OS or OS/390 (the previous name of z/OS), but IBM tests only the z/OS installation. You install ICU in a z/OS UNIX system services file system such as HFS or zFS. On this platform, it is important that you understand a few details:
* The rest of the instructions for building and testing ICU on z/OS with UNIX System Services are the same as the [How To Build And Install On UNIX](#how-to-build-and-install-on-unix) section.
-#### z/OS (Batch/PDS) support outside the UNIX system services environment
+### z/OS (Batch/PDS) support outside the UNIX system services environment
By default, ICU builds its libraries into the UNIX file system (HFS). In addition, there is a z/OS specific environment variable (OS390BATCH) to build some libraries into the z/OS native file system. This is useful, for example, when your application is externalized via Job Control Language (JCL).
Data set name type : PDS
```
-### How To Build And Install On The IBM i Family (IBM i, i5/OS OS/400)
+## How To Build And Install On The IBM i Family (IBM i, i5/OS OS/400)
Before you start building ICU, ICU requires the following:
```
(The `QIBM_MULTI_THREADED=Y` flag will be automatically applied to intltest - you can look at the [iSeries Information Center](https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/rzahw/rzahwceeco.htm) for more details regarding the running of multiple threads on IBM i.)
-### How To Cross Compile ICU
+## How To Cross Compile ICU
This section will explain how to build ICU on one platform, but to produce binaries intended to run on another. This is commonly known as a cross compile.
> :point_right: **Note**: `--with-cross-build` takes an absolute path.
5. Tests and testdata can be built with `gnumake tests`.
-## How To Package ICU
-
-There are many ways that a person can package ICU with their software products. Usually only the libraries need to be considered for packaging.
-
-On UNIX, you should use `gmake install` to make it easier to develop and package ICU. The bin, lib and include directories are needed to develop applications that use ICU. These directories will be created relative to the `--prefix=`dir" configure option (See the [UNIX build instructions](#how-to-build-and-install-on-unix)). When ICU is built on Windows, a similar directory structure is built.
-
-When changes have been made to the standard ICU distribution, it is recommended that at least one of the following guidelines be followed for special packaging.
-
-1. Add a suffix name to the library names. This can be done with the `--with-library-suffix` configure option.
-2. The installation script should install the ICU libraries into the application's directory.
-
-Following these guidelines prevents other applications that use a standard ICU distribution from conflicting with any libraries that you need. On operating systems that do not have a standard C++ ABI (name mangling) for compilers, it is recommended to do this special packaging anyway. More details on customizing ICU are available in the [User's Guide](https://unicode-org.github.io/icu/userguide/). The [ICU Source Code Organization](#SourceCode) section of this readme.html gives a more complete description of the libraries.
-
-ICU has several libraries for you to use. Here is an example of libraries that are frequently packaged.
-
-| Library Name | Windows Filename | Linux Filename | Comment |
-|-------------------------------------|------------------|------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| Data Library | icudtXYl.dll | libicudata.so.XY.Z | Data required by the Common and I18n libraries. There are many ways to package and [customize this data](https://unicode-org.github.io/icu/userguide/icudata), but by default this is all you need. |
-| Common Library | icuucXY.dll | libicuuc.so.XY.Z | Base library required by all other ICU libraries. |
-| Internationalization (i18n) Library | icuinXY.dll | libicui18n.so.XY.Z | A library that contains many locale based internationalization (i18n) functions. |
-| Layout Extensions Engine | iculxXY.dll | libiculx.so.XY.Z | An optional engine for doing paragraph layout that uses parts of ICU. HarfBuzz is required. |
-| ICU I/O (Unicode stdio) Library | icuioXY.dll | libicuio.so.XY.Z | An optional library that provides a stdio like API with Unicode support. |
-| Tool Utility Library | icutuXY.dll | libicutu.so.XY.Z | An internal library that contains internal APIs that are only used by ICU's tools. If you do not use ICU's tools, you do not need this library. |
-
-
-Normally only the above ICU libraries need to be considered for packaging. The versionless symbolic links to these libraries are only needed for easier development. The _X_, _Y_ and _Z_ parts of the name are the version numbers of ICU. For example, ICU 2.0.2 would have the name libicuuc.so.20.2 for the common library. The exact format of the library names can vary between platforms due to how each platform can handles library versioning.
-
-## Important Notes About Using ICU
-
-### Using ICU in a Multithreaded Environment
-
-Some versions of ICU require calling the `u_init()` function from `uclean.h` to ensure that ICU is initialized properly. In those ICU versions, `u_init()` must be called before ICU is used from multiple threads. There is no harm in calling `u_init()` in a single-threaded application, on a single-CPU machine, or in other cases where `u_init()` is not required.
-
-In addition to ensuring thread safety, `u_init()` also attempts to load at least one ICU data file. Assuming that all data files are packaged together (or are in the same folder in files mode), a failure code from `u_init()` usually means that the data cannot be found. In this case, the data may not be installed properly, or the application may have failed to call `udata_setCommonData()` or `u_setDataDirectory()` which specify to ICU where it can find its data.
-
-Since `u_init()` will load only one or two data files, it cannot guarantee that all of the data that an application needs is available. It cannot check for all data files because the set of files is customizable, and some ICU services work without loading any data at all. An application should always check for error codes when opening ICU service objects (using `ucnv_open()`, `ucol_open()`, C++ constructors, etc.).
-
-#### ICU 3.4 and later
-
-ICU 3.4 self-initializes properly for multi-threaded use. It achieves this without performance penalty by hardcoding the core Unicode properties data, at the cost of some flexibility. (For details see Jitterbug 4497.)
-
-`u_init()` can be used to check for data loading. It tries to load the converter alias table (`cnvalias.icu`).
-
-#### ICU 2.6..3.2
-
-These ICU versions require a call to `u_init()` before multi-threaded use. The services that are directly affected are those that don't have a service object and need to be fast: normalization and character properties.
-
-`u_init()` loads and initializes the data files for normalization and character properties (`unorm.icu` and `uprops.icu`) and can therefore also be used to check for data loading.
-
-#### ICU 2.4 and earlier
-
-ICU 2.4 and earlier versions were not prepared for multithreaded use on multi-CPU platforms where the CPUs implement weak memory coherency. These CPUs include: Power4, Power5, Alpha, Itanium. `u_init()` was not defined yet.
-
-#### Using ICU in a Multithreaded Environment on HP-UX
-
-When ICU is built with aCC on HP-UX, the [`-AA`](http://h21007.www2.hp.com/portal/site/dspp/menuitem.863c3e4cbcdc3f3515b49c108973a801?ciid=eb08b3f1eee02110b3f1eee02110275d6e10RCRD) compiler flag is used. It is required in order to use the latest `<iostream>` API in a thread safe manner. This compiler flag affects the version of the C++ library being used. Your applications will also need to be compiled with `-AA` in order to use ICU.
-
-#### Using ICU in a Multithreaded Environment on Solaris
-
-##### Linking on Solaris
-
-In order to avoid synchronization and threading issues, developers are **suggested** to strictly follow the compiling and linking guidelines for multithreaded applications, specified in the following SUn Solaris document available from Oracle. Most notably, pay strict attention to the following statements from Sun:
-
-> To use libthread, specify `-lthread` before `-lc` on the ld command line, or last on the cc command line.
->
-> To use libpthread, specify `-lpthread` before `-lc` on the ld command line, or last on the cc command line.
-
-Failure to do this may cause spurious lock conflicts, recursive mutex failure, and deadlock.
-
-Source: "_Multithreaded Programming Guide, Compiling and Debugging_", Sun Microsystems, 2002
-[https://docs.oracle.com/cd/E19683-01/806-6867/compile-74765/index.html](https://docs.oracle.com/cd/E19683-01/806-6867/compile-74765/index.html)
-
-Note, a version of that chapter from a 2008 document update covering both Solaris 9 and Solaris 10 is available here:
-[http://docs.oracle.com/cd/E19253-01/816-5137/compile-94179/index.html](http://docs.oracle.com/cd/E19253-01/816-5137/compile-94179/index.html)
-
-### Windows Platform
-
-If you are building on the Windows platform, it is important that you understand a few of the following build details.
-
-#### DLL directories and the PATH setting
-
-As delivered, the International Components for Unicode build as several DLLs, which are placed in the `<ICU>\bin64` directory. You must add this directory to the PATH environment variable in your system, or any executables you build will not be able to access International Components for Unicode libraries. Alternatively, you can copy the DLL files into a directory already in your PATH, but we do not recommend this. You can wind up with multiple copies of the DLL and wind up using the wrong one.
-
-#### Changing your PATH
-
-##### Windows 2000/XP and above
-
-Use the System Icon in the Control Panel. Pick the "Advanced" tab. Select the "Environment Variables..." button. Select the variable `PATH` in the lower box, and select the lower "Edit..." button. In the "Variable Value" box, append the string `;<ICU>\bin64` to the end of the path string. If there is nothing there, just type in `<ICU>\bin64`. Click the Set button, then the OK button.
-
-> :point_right: **Note**: When packaging a Windows application for distribution and installation on user systems, copies of the ICU DLLs should be included with the application, and installed for exclusive use by the application. This is the only way to insure that your application is running with the same version of ICU, built with exactly the same options, that you developed and tested with. Refer to Microsoft's guidelines on the usage of DLLs, or search for the phrase "DLL hell" on [msdn.microsoft.com](http://msdn.microsoft.com/).
-
-### UNIX Type Platform
-
-If you are building on a UNIX platform, and if you are installing ICU in a non-standard location, you may need to add the location of your ICU libraries to your `LD_LIBRARY_PATH` or `LIBPATH` environment variable (or the equivalent runtime library path environment variable for your system). The ICU libraries may not link or load properly without doing this.
-
-> :point_right: **Note**: If you do not want to have to set this variable, you may instead use the `--enable-rpath` option at configuration time. This option will instruct the linker to always look for the libraries where they are installed. You will need to use the appropriate linker options when linking your own applications and libraries against ICU, too. Please refer to your system's linker manual for information about runtime paths. The use of rpath also means that when building a new version of ICU you should not have an older version installed in the same place as the new version's installation directory, as the older libraries will used during the build, instead of the new ones, likely leading to an incorrectly build ICU. This is the proper behavior of rpath.
-
-## Platform Dependencies
-
-### Porting To A New Platform
-
-If you are using ICU's Makefiles to build ICU on a new platform, there are a few places where you will need to add or modify some files. If you need more help, you can always ask the [icu-support mailing list](http://site.icu-project.org/contacts). Once you have finished porting ICU to a new platform, it is recommended that you contribute your changes back to ICU via the icu-support mailing list. This will make it easier for everyone to benefit from your work.
-
-#### Data For a New Platform
-
-For some people, it may not be necessary for completely build ICU. Most of the makefiles and build targets are for tools that are used for building ICU's data, and an application's data (when an application uses ICU resource bundles for its data).
-
-Data files can be built on a different platform when both platforms share the same endianness and the same charset family. This assertion does not include platform dependent DLLs/shared/static libraries. For details see the User Guide [ICU Data](https://unicode-org.github.io/icu/userguide/icudata) chapter.
-
-ICU 3.6 removes the requirement that ICU be completely built in the native operating environment. It adds the icupkg tool which can be run on any platform to turn binary ICU data files from any one of the three formats into any one of the other data formats. This allows a application to use ICU data built anywhere to be used for any other target platform.
-
-**WARNING!** Building ICU without running the tests is not recommended. The tests verify that ICU is safe to use. It is recommended that you try to completely port and test ICU before using the libraries for your own application.
-
-#### Adapting Makefiles For a New Platform
-
-Try to follow the build steps from the [UNIX](#how-to-build-and-install-on-unix) build instructions. If the configure script fails, then you will need to modify some files. Here are the usual steps for porting to a new platform:
-
-1. Create an mh file in `<ICU>/source/config/`. You can use mh-linux or a similar mh file as your base configuration.
-2. Modify `<ICU>/source/aclocal.m4` to recognize your platform's mh file.
-3. Modify `<ICU>/source/configure.in` to properly set your **platform** C Macro define.
-4. Run [autoconf](http://www.gnu.org/software/autoconf/) in `<ICU>/source/` without any options. The autoconf tool is standard on most Linux systems.
-5. If you have any optimization options that you want to normally use, you can modify `<ICU>/source/runConfigureICU` to specify those options for your platform.
-6. Build and test ICU on your platform. It is very important that you run the tests. If you don't run the tests, there is no guarentee that you have properly ported ICU.
-
-### Platform Dependent Implementations
-
-The platform dependencies have been mostly isolated into the following files in the common library. This information can be useful if you are porting ICU to a new platform.
-
-* **unicode/platform.h.in** (autoconf'ed platforms)
- **unicode/p_XXXX_.h** (others: pwin32.h, ppalmos.h, ..): Platform-dependent typedefs and defines:
- * Generic types like `UBool`, `int8_t`, `int16_t`, `int32_t`, `int64_t`, `uint64_t` etc.
- * `U_EXPORT` and `U_IMPORT` for specifying dynamic library import and export
- * String handling support for the `char16_t` and `wchar_t` types.
-* **unicode/putil.h, putil.c**: platform-dependent implementations of various functions that are platform dependent:
- * `uprv_isNaN`, `uprv_isInfinite`, `uprv_getNaN` and `uprv_getInfinity` for handling special floating point values.
- * `uprv_tzset`, `uprv_timezone`, `uprv_tzname` and `time` for getting platform specific time and time zone information.
- * `u_getDataDirectory` for getting the default data directory.
- * `uprv_getDefaultLocaleID` for getting the default locale setting.
- * `uprv_getDefaultCodepage` for getting the default codepage encoding.
-* **umutex.h, umutex.c**: Code for doing synchronization in multithreaded applications. If you wish to use International Components for Unicode in a multithreaded application, you must provide a synchronization primitive that the classes can use to protect their global data against simultaneous modifications. We already supply working implementations for many platforms that ICU builds on.
-* **umapfile.h, umapfile.c**: functions for mapping or otherwise reading or loading files into memory. All access by ICU to data from files makes use of these functions.
-* Using platform specific `#ifdef` macros are highly discouraged outside of the scope of these files. When the source code gets updated in the future, these `#ifdef`'s can cause testing problems for your platform.
* * *
---
layout: default
-title: ICU FAQ
-nav_order: 6
-parent: Misc
+title: ICU4C FAQ
+nav_order: 1
+parent: ICU4C
---
<!--
© 2020 and later: Unicode, Inc. and others.
**Why don't you provide project files for my MSVC version (MSVC 2008, etc)?**
You can use the Cygwin build environment to build ICU from source against the
-MSVC compiler. See the ICU4C Readme.
+MSVC compiler. See the [Building ICU4C](./icu4c/build) page.
#### How do I install the binary versions of ICU?
#### Can you help me build ICU4C for ...
-We can try ... make sure you read the latest "readme" and also the [ICU
+We can try ... make sure you read the [Building ICU4C](./icu4c/build) section and also the [ICU
Data](../icudata.md) section. You might also [searching the icu-support
archives](http://site.icu-project.org/contacts), and then posting a question
there. Additionally, sites such as
#### How do I build ICU?
-See the readme.html that is included with ICU.
+See the [Building ICU4C](./icu4c/build) section.
#### How do I get 32- or 64-bit versions of the ICU libraries?
--- /dev/null
+---
+layout: default
+title: ICU4C
+nav_order: 3
+has_children: true
+---
+<!--
+© 2020 and later: Unicode, Inc. and others.
+License & terms of use: http://www.unicode.org/copyright.html
+-->
+
+# ICU4C Readme
+{: .no_toc }
+
+## Contents
+{: .no_toc .text-delta }
+
+1. TOC
+{:toc}
+
+---
+
+
+## Introduction
+
+Today's software market is a global one in which it is desirable to develop and maintain one application (single source/single binary) that supports a wide variety of languages. The International Components for Unicode (ICU) libraries provide robust and full-featured Unicode services on a wide variety of platforms to help this design goal. The ICU libraries provide support for:
+
+* The latest version of the Unicode standard
+* Character set conversions with support for over 220 codepages
+* Locale data for more than 300 locales
+* Language sensitive text collation (sorting) and searching based on the Unicode Collation Algorithm (=ISO 14651)
+* Regular expression matching and Unicode sets
+* Transformations for normalization, upper/lowercase, script transliterations (50+ pairs)
+* Resource bundles for storing and accessing localized information
+* Date/Number/Message formatting and parsing of culture specific input/output formats
+* Calendar specific date and time manipulation
+* Text boundary analysis for finding characters, word and sentence boundaries
+
+ICU has a sister project ICU4J that extends the internationalization capabilities of Java to a level similar to ICU. The ICU C/C++ project is also called ICU4C when a distinction is necessary.
+
+## Getting started
+
+This document describes how to build and install ICU on your machine. For other information about ICU please see the following table of links.
+The ICU homepage also links to related information about writing internationalized software.
+
+**Here are some useful links regarding ICU and internationalization in general.**
+
+
+| ICU, ICU4C & ICU4J Homepage | <http://site.icu-project.org/> |
+| ICU FAQ - Frequently Asked Questions about ICU | <https://unicode-org.github.io/icu/userguide/icu4c/faq> |
+| ICU4J FAQ - Frequently Asked Questions about ICU4J | <https://unicode-org.github.io/icu/userguide/icu4j/faq> |
+| ICU User's Guide | <https://unicode-org.github.io/icu/> |
+| How To Use ICU | <https://unicode-org.github.io/icu/userguide/howtouseicu> |
+| Download ICU Releases | <http://site.icu-project.org/download> |
+| ICU4C API Documentation Online | <http://icu-project.org/apiref/icu4c/> |
+| Online ICU Demos | <http://demo.icu-project.org/icu-bin/icudemos> |
+| Contacts and Bug Reports/Feature Requests | <http://site.icu-project.org/contacts> |
+
+**Important:** Please make sure you understand the [Copyright and License Information](https://github.com/unicode-org/icu/blob/main/icu4c/LICENSE).
+
+## What Is New In The Current Release?
+
+See the [ICU download page](http://site.icu-project.org/download/) to find the subpage for the current release, including any other changes, bug fixes, known issues, changes to supported platforms and build environments, and migration issues for existing applications migrating from previous ICU releases.
+
+The subpage for the current release will also include an API Change Report, both for ICU4C and ICU4J, for a complete list of APIs added, removed, or changed in this release.
+
+The list of API changes since the previous ICU4C release is available [here](https://htmlpreview.github.io/?https://raw.githubusercontent.com/unicode-org/icu/main/icu4c/APIChangeReport.html).
+
+Changes in previous releases can also be found on the main [ICU download page](http://site.icu-project.org/download) in its version-specific subpages.
+
+## How To Download the Source Code
+
+There are two ways to download ICU releases:
+
+* **Official Release Snapshot:**
+ If you want to use ICU (as opposed to developing it), you should download an official packaged version of the ICU source code. These versions are tested more thoroughly than day-to-day development builds of the system, and they are packaged in zip and tar files for convenient download. These packaged files can be found at [http://site.icu-project.org/download](http://site.icu-project.org/download).
+ The packaged snapshots are named `icu-nnnn.zip` or `icu-nnnn.tgz`, where `nnnn` is the version number. The .zip file is used for Windows platforms, while the .tgz file is preferred on most other platforms.
+ Please unzip this file.
+ > :point_right: **Note**: There may be additional commits on the `maint-*` branch for a particular version that are not included in the prepackaged download files.
+* **GitHub Source Repository:**
+ If you are interested in developing features, patches, or bug fixes for ICU, you should probably be working with the latest version of the ICU source code. You will need to clone and checkout the code from our GitHub repository to ensure that you have the most recent version of all of the files. See our [source repository](http://site.icu-project.org/repository) for details.
+
+## ICU Source Code Organization
+
+In the descriptions below, `<ICU>` is the full path name of the ICU4C directory (the top level directory from the distribution archives) in your file system. You can also view the [ICU Architectural Design](design.md) section of the User's Guide to see which libraries you need for your software product. You need at least the data (`[lib]icudt`) and the common (`[lib]icuuc`) libraries in order to use ICU.
+
+**The following files describe the code drop.**
+
+| File | Description |
+|-------------|----------------------------------------------------------------|
+| LICENSE | Contains the text of the ICU license |
+
+**The following directories contain source code and data files.**
+
+<table>
+
+ <tr>
+ <th scope="col">Directory</th>
+
+ <th scope="col">Description</th>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>common</b>/</td>
+
+ <td>The core Unicode and support functionality, such as resource bundles,
+ character properties, locales, codepage conversion, normalization,
+ Unicode properties, Locale, and UnicodeString.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>i18n</b>/</td>
+
+ <td>Modules in i18n are generally the more data-driven, that is to say
+ resource bundle driven, components. These deal with higher-level
+ internationalization issues such as formatting, collation, text break
+ analysis, and transliteration.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>layoutex</b>/</td>
+
+ <td>Contains the ICU paragraph layout engine.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>io</b>/</td>
+
+ <td>Contains the ICU I/O library.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>data</b>/</td>
+
+ <td>
+ <p>This directory contains the source data in text format, which is
+ compiled into binary form during the ICU build process. It contains
+ several subdirectories, in which the data files are grouped by
+ function. Note that the build process must be run again after any
+ changes are made to this directory.</p>
+
+ <p>If some of the following directories are missing, it's probably
+ because you got an official download. If you need the data source files
+ for customization, then please download the complete ICU source code from <a
+ href="http://site.icu-project.org/repository">the ICU repository</a>.</p>
+
+ <ul>
+ <li><b>in/</b> A directory that contains a pre-built data library for
+ ICU. A standard source code package will contain this file without
+ several of the following directories. This is to simplify the build
+ process for the majority of users and to reduce platform porting
+ issues.</li>
+
+ <li><b>brkitr/</b> Data files for character, word, sentence, title
+ casing and line boundary analysis.</li>
+
+ <li><b>coll/</b> Data for collation tailorings. The makefile
+ <b>colfiles.mk</b> contains the list of resource bundle files.</li>
+
+ <li><b>locales/</b> These .txt files contain ICU language and
+ culture-specific localization data. Two special bundles are
+ <b>root</b>, which is the fallback data and parent of other bundles,
+ and <b>index</b>, which contains a list of installed bundles. The
+ makefile <b>resfiles.mk</b> contains the list of resource bundle
+ files. Some of the locale data is split out into the type-specific
+ directories curr, lang, region, unit, and zone, described below.</li>
+
+ <li><b>curr/</b> Locale data for currency symbols and names (including
+ plural forms), with its own makefile <b>resfiles.mk</b>.</li>
+
+ <li><b>lang/</b> Locale data for names of languages, scripts, and locale
+ key names and values, with its own makefile <b>resfiles.mk</b>.</li>
+
+ <li><b>region/</b> Locale data for names of regions, with its own
+ makefile <b>resfiles.mk</b>.</li>
+
+ <li><b>unit/</b> Locale data for measurement unit patterns and names,
+ with its own makefile <b>resfiles.mk</b>.</li>
+
+ <li><b>zone/</b> Locale data for time zone names, with its own
+ makefile <b>resfiles.mk</b>.</li>
+
+ <li><b>mappings/</b> Here are the code page converter tables. These
+ .ucm files contain mappings to and from Unicode. These are compiled
+ into .cnv files. <b>convrtrs.txt</b> is the alias mapping table from
+ various converter name formats to ICU internal format and vice versa.
+ It produces cnvalias.icu. The makefiles <b>ucmfiles.mk,
+ ucmcore.mk,</b> and <b>ucmebcdic.mk</b> contain the list of
+ converters to be built.</li>
+
+ <li><b>translit/</b> This directory contains transliterator rules as
+ resource bundles, a makefile <b>trnsfiles.mk</b> containing the list
+ of installed system translitaration files, and as well the special
+ bundle <b>translit_index</b> which lists the system transliterator
+ aliases.</li>
+
+ <li><b>unidata/</b> This directory contains the Unicode data files.
+ Please see <a href=
+ "http://www.unicode.org/">http://www.unicode.org/</a> for more
+ information.</li>
+
+ <li><b>misc/</b> The misc directory contains other data files which
+ did not fit into the above categories, including time zone
+ information, region-specific data, and other data derived from CLDR
+ supplemental data.</li>
+
+ <li><b>out/</b> This directory contains the assembled memory mapped
+ files.</li>
+
+ <li><b>out/build/</b> This directory contains intermediate (compiled)
+ files, such as .cnv, .res, etc.</li>
+ </ul>
+
+ <p>If you are creating a special ICU build, you can set the ICU_DATA
+ environment variable to the out/ or the out/build/ directories, but
+ this is generally discouraged because most people set it incorrectly.
+ You can view the <a href=
+ "https://unicode-org.github.io/icu/userguide/icudata">ICU Data
+ Management</a> section of the ICU User's Guide for details.</p>
+ </td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/test/<b>intltest</b>/</td>
+
+ <td>A test suite including all C++ APIs. For information about running
+ the test suite, see the build instructions specific to your platform
+ later in this document.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/test/<b>cintltst</b>/</td>
+
+ <td>A test suite written in C, including all C APIs. For information
+ about running the test suite, see the build instructions specific to your
+ platform later in this document.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/test/<b>iotest</b>/</td>
+
+ <td>A test suite written in C and C++ to test the icuio library. For
+ information about running the test suite, see the build instructions
+ specific to your platform later in this document.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/test/<b>testdata</b>/</td>
+
+ <td>Source text files for data, which are read by the tests. It contains
+ the subdirectories <b>out/build/</b> which is used for intermediate
+ files, and <b>out/</b> which contains <b>testdata.dat.</b></td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>tools</b>/</td>
+
+ <td>Tools for generating the data files. Data files are generated by
+ invoking <i><ICU></i>/source/data/build/makedata.bat on Win32 or
+ <i><ICU></i>/source/make on UNIX.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>samples</b>/</td>
+
+ <td>Various sample programs that use ICU</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>extra</b>/</td>
+
+ <td>Non-supported API additions. Currently, it contains the 'uconv' tool
+ to perform codepage conversion on files.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/<b>packaging</b>/</td>
+
+ <td>This directory contain scripts and tools for packaging the final
+ ICU build for various release platforms.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>config</b>/</td>
+
+ <td>Contains helper makefiles for platform specific build commands. Used
+ by 'configure'.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/source/<b>allinone</b>/</td>
+
+ <td>Contains top-level ICU workspace and project files, for instance to
+ build all of ICU under one MSVC project.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/<b>include</b>/</td>
+
+ <td>Contains the headers needed for developing software that uses ICU on
+ Windows.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/<b>lib</b>/</td>
+
+ <td>Contains the import libraries for linking ICU into your Windows
+ application.</td>
+ </tr>
+
+ <tr>
+ <td><i><ICU></i>/<b>bin</b>/</td>
+
+ <td>Contains the libraries and executables for using ICU on Windows.</td>
+ </tr>
+ </table>
+
+
+
+## How To Build And Install ICU
+
+See the page on [building ICU4C](./build).
+
+## How To Package ICU
+
+See the page on [packaging ICU4C](./packaging).
+
+## Important Notes About Using ICU
+
+### Using ICU in a Multithreaded Environment
+
+Some versions of ICU require calling the `u_init()` function from `uclean.h` to ensure that ICU is initialized properly. In those ICU versions, `u_init()` must be called before ICU is used from multiple threads. There is no harm in calling `u_init()` in a single-threaded application, on a single-CPU machine, or in other cases where `u_init()` is not required.
+
+In addition to ensuring thread safety, `u_init()` also attempts to load at least one ICU data file. Assuming that all data files are packaged together (or are in the same folder in files mode), a failure code from `u_init()` usually means that the data cannot be found. In this case, the data may not be installed properly, or the application may have failed to call `udata_setCommonData()` or `u_setDataDirectory()` which specify to ICU where it can find its data.
+
+Since `u_init()` will load only one or two data files, it cannot guarantee that all of the data that an application needs is available. It cannot check for all data files because the set of files is customizable, and some ICU services work without loading any data at all. An application should always check for error codes when opening ICU service objects (using `ucnv_open()`, `ucol_open()`, C++ constructors, etc.).
+
+#### ICU 3.4 and later
+
+ICU 3.4 self-initializes properly for multi-threaded use. It achieves this without performance penalty by hardcoding the core Unicode properties data, at the cost of some flexibility. (For details see Jitterbug 4497.)
+
+`u_init()` can be used to check for data loading. It tries to load the converter alias table (`cnvalias.icu`).
+
+#### ICU 2.6..3.2
+
+These ICU versions require a call to `u_init()` before multi-threaded use. The services that are directly affected are those that don't have a service object and need to be fast: normalization and character properties.
+
+`u_init()` loads and initializes the data files for normalization and character properties (`unorm.icu` and `uprops.icu`) and can therefore also be used to check for data loading.
+
+#### ICU 2.4 and earlier
+
+ICU 2.4 and earlier versions were not prepared for multithreaded use on multi-CPU platforms where the CPUs implement weak memory coherency. These CPUs include: Power4, Power5, Alpha, Itanium. `u_init()` was not defined yet.
+
+#### Using ICU in a Multithreaded Environment on HP-UX
+
+When ICU is built with aCC on HP-UX, the [`-AA`](http://h21007.www2.hp.com/portal/site/dspp/menuitem.863c3e4cbcdc3f3515b49c108973a801?ciid=eb08b3f1eee02110b3f1eee02110275d6e10RCRD) compiler flag is used. It is required in order to use the latest `<iostream>` API in a thread safe manner. This compiler flag affects the version of the C++ library being used. Your applications will also need to be compiled with `-AA` in order to use ICU.
+
+#### Using ICU in a Multithreaded Environment on Solaris
+
+##### Linking on Solaris
+
+In order to avoid synchronization and threading issues, developers are **suggested** to strictly follow the compiling and linking guidelines for multithreaded applications, specified in the following SUn Solaris document available from Oracle. Most notably, pay strict attention to the following statements from Sun:
+
+> To use libthread, specify `-lthread` before `-lc` on the ld command line, or last on the cc command line.
+>
+> To use libpthread, specify `-lpthread` before `-lc` on the ld command line, or last on the cc command line.
+
+Failure to do this may cause spurious lock conflicts, recursive mutex failure, and deadlock.
+
+Source: "_Multithreaded Programming Guide, Compiling and Debugging_", Sun Microsystems, 2002
+[https://docs.oracle.com/cd/E19683-01/806-6867/compile-74765/index.html](https://docs.oracle.com/cd/E19683-01/806-6867/compile-74765/index.html)
+
+Note, a version of that chapter from a 2008 document update covering both Solaris 9 and Solaris 10 is available here:
+[http://docs.oracle.com/cd/E19253-01/816-5137/compile-94179/index.html](http://docs.oracle.com/cd/E19253-01/816-5137/compile-94179/index.html)
+
+### Windows Platform
+
+If you are building on the Windows platform, it is important that you understand a few of the following build details.
+
+#### DLL directories and the PATH setting
+
+As delivered, the International Components for Unicode build as several DLLs, which are placed in the `<ICU>\bin64` directory. You must add this directory to the PATH environment variable in your system, or any executables you build will not be able to access International Components for Unicode libraries. Alternatively, you can copy the DLL files into a directory already in your PATH, but we do not recommend this. You can wind up with multiple copies of the DLL and wind up using the wrong one.
+
+#### Changing your PATH
+
+##### Windows 2000/XP and above
+
+Use the System Icon in the Control Panel. Pick the "Advanced" tab. Select the "Environment Variables..." button. Select the variable `PATH` in the lower box, and select the lower "Edit..." button. In the "Variable Value" box, append the string `;<ICU>\bin64` to the end of the path string. If there is nothing there, just type in `<ICU>\bin64`. Click the Set button, then the OK button.
+
+> :point_right: **Note**: When packaging a Windows application for distribution and installation on user systems, copies of the ICU DLLs should be included with the application, and installed for exclusive use by the application. This is the only way to insure that your application is running with the same version of ICU, built with exactly the same options, that you developed and tested with. Refer to Microsoft's guidelines on the usage of DLLs, or search for the phrase "DLL hell" on [msdn.microsoft.com](http://msdn.microsoft.com/).
+
+### UNIX Type Platform
+
+If you are building on a UNIX platform, and if you are installing ICU in a non-standard location, you may need to add the location of your ICU libraries to your `LD_LIBRARY_PATH` or `LIBPATH` environment variable (or the equivalent runtime library path environment variable for your system). The ICU libraries may not link or load properly without doing this.
+
+> :point_right: **Note**: If you do not want to have to set this variable, you may instead use the `--enable-rpath` option at configuration time. This option will instruct the linker to always look for the libraries where they are installed. You will need to use the appropriate linker options when linking your own applications and libraries against ICU, too. Please refer to your system's linker manual for information about runtime paths. The use of rpath also means that when building a new version of ICU you should not have an older version installed in the same place as the new version's installation directory, as the older libraries will used during the build, instead of the new ones, likely leading to an incorrectly build ICU. This is the proper behavior of rpath.
+
+## Platform Dependencies
+
+### Porting To A New Platform
+
+If you are using ICU's Makefiles to build ICU on a new platform, there are a few places where you will need to add or modify some files. If you need more help, you can always ask the [icu-support mailing list](http://site.icu-project.org/contacts). Once you have finished porting ICU to a new platform, it is recommended that you contribute your changes back to ICU via the icu-support mailing list. This will make it easier for everyone to benefit from your work.
+
+#### Data For a New Platform
+
+For some people, it may not be necessary for completely build ICU. Most of the makefiles and build targets are for tools that are used for building ICU's data, and an application's data (when an application uses ICU resource bundles for its data).
+
+Data files can be built on a different platform when both platforms share the same endianness and the same charset family. This assertion does not include platform dependent DLLs/shared/static libraries. For details see the User Guide [ICU Data](https://unicode-org.github.io/icu/userguide/icudata) chapter.
+
+ICU 3.6 removes the requirement that ICU be completely built in the native operating environment. It adds the icupkg tool which can be run on any platform to turn binary ICU data files from any one of the three formats into any one of the other data formats. This allows a application to use ICU data built anywhere to be used for any other target platform.
+
+**WARNING!** Building ICU without running the tests is not recommended. The tests verify that ICU is safe to use. It is recommended that you try to completely port and test ICU before using the libraries for your own application.
+
+#### Adapting Makefiles For a New Platform
+
+Try to follow the build steps from the [UNIX](#how-to-build-and-install-on-unix) build instructions. If the configure script fails, then you will need to modify some files. Here are the usual steps for porting to a new platform:
+
+1. Create an mh file in `<ICU>/source/config/`. You can use mh-linux or a similar mh file as your base configuration.
+2. Modify `<ICU>/source/aclocal.m4` to recognize your platform's mh file.
+3. Modify `<ICU>/source/configure.in` to properly set your **platform** C Macro define.
+4. Run [autoconf](http://www.gnu.org/software/autoconf/) in `<ICU>/source/` without any options. The autoconf tool is standard on most Linux systems.
+5. If you have any optimization options that you want to normally use, you can modify `<ICU>/source/runConfigureICU` to specify those options for your platform.
+6. Build and test ICU on your platform. It is very important that you run the tests. If you don't run the tests, there is no guarentee that you have properly ported ICU.
+
+### Platform Dependent Implementations
+
+The platform dependencies have been mostly isolated into the following files in the common library. This information can be useful if you are porting ICU to a new platform.
+
+* **unicode/platform.h.in** (autoconf'ed platforms)
+ **unicode/p_XXXX_.h** (others: pwin32.h, ppalmos.h, ..): Platform-dependent typedefs and defines:
+ * Generic types like `UBool`, `int8_t`, `int16_t`, `int32_t`, `int64_t`, `uint64_t` etc.
+ * `U_EXPORT` and `U_IMPORT` for specifying dynamic library import and export
+ * String handling support for the `char16_t` and `wchar_t` types.
+* **unicode/putil.h, putil.c**: platform-dependent implementations of various functions that are platform dependent:
+ * `uprv_isNaN`, `uprv_isInfinite`, `uprv_getNaN` and `uprv_getInfinity` for handling special floating point values.
+ * `uprv_tzset`, `uprv_timezone`, `uprv_tzname` and `time` for getting platform specific time and time zone information.
+ * `u_getDataDirectory` for getting the default data directory.
+ * `uprv_getDefaultLocaleID` for getting the default locale setting.
+ * `uprv_getDefaultCodepage` for getting the default codepage encoding.
+* **umutex.h, umutex.c**: Code for doing synchronization in multithreaded applications. If you wish to use International Components for Unicode in a multithreaded application, you must provide a synchronization primitive that the classes can use to protect their global data against simultaneous modifications. We already supply working implementations for many platforms that ICU builds on.
+* **umapfile.h, umapfile.c**: functions for mapping or otherwise reading or loading files into memory. All access by ICU to data from files makes use of these functions.
+* Using platform specific `#ifdef` macros are highly discouraged outside of the scope of these files. When the source code gets updated in the future, these `#ifdef`'s can cause testing problems for your platform.
+
+* * *
+
+Copyright © 2016 and later: Unicode, Inc. and others. License & terms of use: [http://www.unicode.org/copyright.html](http://www.unicode.org/copyright.html)
+Copyright © 1997-2016 International Business Machines Corporation and others. All Rights Reserved.
layout: default
title: Packaging ICU4C
nav_order: 3
-parent: ICU Data
+parent: ICU4C
---
<!--
© 2020 and later: Unicode, Inc. and others.
distribution, whether alone, as part of an application, or as part of the
operating system.
+There are many ways that a person can package ICU with their software products. Usually only the libraries need to be considered for packaging.
+
+On UNIX, you should use `gmake install` to make it easier to develop and package ICU. The bin, lib and include directories are needed to develop applications that use ICU. These directories will be created relative to the `--prefix=`dir" configure option (See the [UNIX build instructions](#how-to-build-and-install-on-unix)). When ICU is built on Windows, a similar directory structure is built.
+
+When changes have been made to the standard ICU distribution, it is recommended that at least one of the following guidelines be followed for special packaging.
+
+1. Add a suffix name to the library names. This can be done with the `--with-library-suffix` configure option.
+2. The installation script should install the ICU libraries into the application's directory.
+
+Following these guidelines prevents other applications that use a standard ICU
+distribution from conflicting with any libraries that you need. On operating systems
+that do not have a standard C++ ABI (name mangling) for compilers, it is recommended to
+do this special packaging anyway. More details on customizing ICU are available in the
+[User's Guide](https://unicode-org.github.io/icu/userguide/).
+The [ICU Source Code Organization](./index/#icu-source-code-organization) section of
+the ICU4C gives a more complete description of the libraries.
+
+ICU has several libraries for you to use. Here is an example of libraries that are frequently packaged.
+
+| Library Name | Windows Filename | Linux Filename | Comment |
+|-------------------------------------|------------------|------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| Data Library | icudtXYl.dll | libicudata.so.XY.Z | Data required by the Common and I18n libraries. There are many ways to package and [customize this data](https://unicode-org.github.io/icu/userguide/icudata), but by default this is all you need. |
+| Common Library | icuucXY.dll | libicuuc.so.XY.Z | Base library required by all other ICU libraries. |
+| Internationalization (i18n) Library | icuinXY.dll | libicui18n.so.XY.Z | A library that contains many locale based internationalization (i18n) functions. |
+| Layout Extensions Engine | iculxXY.dll | libiculx.so.XY.Z | An optional engine for doing paragraph layout that uses parts of ICU. HarfBuzz is required. |
+| ICU I/O (Unicode stdio) Library | icuioXY.dll | libicuio.so.XY.Z | An optional library that provides a stdio like API with Unicode support. |
+| Tool Utility Library | icutuXY.dll | libicutu.so.XY.Z | An internal library that contains internal APIs that are only used by ICU's tools. If you do not use ICU's tools, you do not need this library. |
+
+
+Normally only the above ICU libraries need to be considered for packaging. The versionless symbolic links to these libraries are only needed for easier development. The _X_, _Y_ and _Z_ parts of the name are the version numbers of ICU. For example, ICU 2.0.2 would have the name libicuuc.so.20.2 for the common library. The exact format of the library names can vary between platforms due to how each platform can handles library versioning.
+
## Making ICU Smaller
The ICU project is intended to provide everything an application might need in
## ICU Versions
-(This section assumes the reader is familiar with ICU version numbers (§) as
+(This section assumes the reader is familiar with [ICU version numbers](../design#version-numbers-in-icu) as
covered in the [Design](../design.md) chapter, and filename conventions for
-libraries in the
-[ReadMe](https://github.com/unicode-org/icu/blob/main/icu4c/readme.html#HowToPackage)
-.)
+libraries as described above.)
### POSIX Library Names
layout: default
title: Plug-ins
nav_order: 4
-parent: ICU Data
+parent: ICU4C
---
<!--
© 2020 and later: Unicode, Inc. and others.
---
layout: default
title: ICU4J FAQ
-nav_order: 7
-parent: Misc
+nav_order: 1
+parent: ICU4J
---
<!--
© 2020 and later: Unicode, Inc. and others.
1. Download [ICU4J 64 source package
archive](http://site.icu-project.org/download/64#TOC-ICU4J-Download)
from the ICU 64 download page and extract files to your local system.
-2. Set up ICU4J build environment as explained in
- [readme.html](https://htmlpreview.github.io/?https://github.com/unicode-org/icu/blob/main/icu4j/readme.html)
- included in the root directory of the ICU4J source package archive.
+2. Set up ICU4J build environment as explained in the
+ [ICU4C Readme](./index).
3. Edit
[build.properties](https://github.com/unicode-org/icu/blob/main/icu4j/build.properties)
in the root directory and change the property value api.report.prev.version
---
layout: default
-title: ICU4J Readme
-nav_order: 8
-parent: ICU
+title: ICU4J
+nav_order: 4
+has_children: true
---
<!--
© 2020 and later: Unicode, Inc. and others.
> :point_right: **Note:** We continue to provide assistance to Java, and in some cases, ICU4J support has been rolled into a later release of Java. For example, BCP47 language tag support including Unicode locale extensions is now in Java 7\. However, the most current and complete version is always found in ICU4J.
-## What Is New In The Current Release?
-
-See the [ICU download page](http://site.icu-project.org/download/) to find the subpage for the current release, including any other changes, bug fixes, known issues, changes to supported platforms and build environments, and migration issues for existing applications migrating from previous ICU releases.
-
-The subpage for the current release will also include an API Change Report, both for ICU4C and ICU4J, for a complete list of APIs added, removed, or changed in this release.
-
-The list of API changes since the previous ICU4J release is available [here](https://htmlpreview.github.io/?https://raw.githubusercontent.com/unicode-org/icu/main/icu4j/APIChangeReport.html).
-
-Changes in previous releases can also be found the main [ICU download page](http://site.icu-project.org/download) in its version-specific subpages.
-
-## License Information
-
-The ICU projects (ICU4C and ICU4J) are hosted by the [Unicode Consortium](http://www.unicode.org/). The ICU binary and source files are distributed under the [UNICODE DATA FILES AND SOFTWARE LICENSE](http://www.unicode.org/copyright.html). The full copy of the license and third party software licenses are available in [LICENSE](https://github.com/unicode-org/icu/blob/main/icu4j/main/shared/licenses/LICENSE) file included in this package.
-
## Platform Dependencies
The minimum Java runtime version supported by ICU4J 68 is version 7\. Java runtime version 6 is not supported.
| Path | Description |
|------------------------------|-----------------------------------------------------------------------------------------|
-| readme.html | A description of ICU4J (International Components for Unicode for Java) |
-| build.html | The main Ant build file for ICU4J. See [How to Install and Build](#how-to-install-and-build) for more information |
+| build.xml | The main Ant build file for ICU4J. See [How to Install and Build](#how-to-install-and-build) for more information |
| main/shared/licenses/LICENSE | ICU license |
### ICU4J runtime class files
> :point_right: **Note**: **Eclipse users:** See the ICU4J site for information on [how to configure Eclipse](http://site.icu-project.org/setup/eclipse) to build and develop ICU4J on Eclipse IDE.
-> :point_right: **Note**: To install and configure ICU4J Locale Service Provider, please refer the user guide page [ICU4J Locale Service Provider](https://unicode-org.github.io/icu/userguide/icu4j-locale-service-provider).
+> :point_right: **Note**: To install and configure ICU4J Locale Service Provider, please refer the user guide page [ICU4J Locale Service Provider](./locale-service-provider).
## Trying Out ICU4J
### Building ICU4J Resources from ICU4C
-ICU4J data is built by ICU4C tools. Please see [`icu4j-readme.txt`](https://github.com/unicode-org/icu/blob/main/icu4c/source/data/icu4j-readme.txt) in `icu4c/source/data` for the procedures.
+ICU4J data is built by ICU4C tools. Please see [ICU Data Build Tool](../icu_data/buildtool) for the procedures.
#### Generating Data from CLDR
4. Follow the instructions in [`icu4c/source/data/cldr-icu-readme.txt`](https://github.com/unicode-org/icu/blob/main/icu4c/source/data/cldr-icu-readme.txt)
5. Rebuild ICU4C with the newly generated data.
6. Run ICU4C tests to verify that the new data is good.
-7. Build ICU4J data from ICU4C data by following the procedures in [`icu4j/source/data/icu4j-readme.txt`](https://github.com/unicode-org/icu/blob/main/icu4c/source/data/icu4j-readme.txt)
+7. Build ICU4J data from ICU4C data by following the procedures in [ICU Data Build Tool](../icu_data/buildtool)
8. cd to `icu4j` dir
9. Build and test icu4j
To submit comments, request features and report bugs, please see [ICU bug database information](http://site.icu-project.org/bugs) or contact us through the [ICU Support mailing list](http://site.icu-project.org/contacts). While we are not able to respond individually to each comment, we do review all comments.
-## Thank you for your interest in ICU4J!
-
* * *
© 2016 and later: Unicode, Inc. and others.
---
layout: default
title: ICU4J Locale Service Provider
-nav_order: 7
-parent: ICU
+nav_order: 2
+parent: ICU4J
---
<!--
© 2020 and later: Unicode, Inc. and others.
$ pip3 install --user hjson jsonschema
To build ICU4J with custom data, you must first build ICU4C with custom data
-and then generate the JAR file. For more information, read
-[icu4j-readme.txt](https://github.com/unicode-org/icu/blob/main/icu4c/source/data/icu4j-readme.txt).
+and then generate the JAR file. For more information on building ICU4J, read the
+[ICU4J Readme](../icu4j/).
### Locale Slicing
---
layout: default
title: ICU Data
-nav_order: 13
+nav_order: 15
has_children: true
---
<!--
1. [ICU4C](http://icu-project.org/download/)
-2. Compilers and tools required for [building ICU4C](https://htmlpreview.github.io/?https://github.com/unicode-org/icu/blob/main/icu4c/readme.html#HowToBuild).
+2. Compilers and tools required for [building ICU4C](../icu4c/build).
3. J2SE SDK version 5 or above
#### Procedure
1. Download and build ICU4C on a Windows or Linux machine. For instructions on downloading and building ICU4C, please click
- [here](https://htmlpreview.github.io/?https://github.com/unicode-org/icu/blob/main/icu4c/readme.html#HowToBuild).
+ [here](../icu4c/build).
2. Follow the remaining instructions in
- [*$icu4c_root*/source/data/icu4j-readme.txt](https://github.com/unicode-org/icu/blob/main/icu4c/source/data/icu4j-readme.txt).
- *$icu4c_root* is the root directory of ICU4C source package.
+ the [ICU4J Readme](../icu4j/).
---
layout: default
title: IO
-nav_order: 11
+nav_order: 13
has_children: true
---
<!--
---
layout: default
title: Layout Engine
-nav_order: 12
+nav_order: 14
has_children: true
---
<!--
---
layout: default
title: Locales and Resources
-nav_order: 5
+nav_order: 7
has_children: true
---
<!--
---
layout: default
title: Chars and Strings
-nav_order: 3
+nav_order: 5
has_children: true
---
<!--
---
layout: default
title: Transforms
-nav_order: 8
+nav_order: 10
has_children: true
---
<!--
---
layout: default
title: Use From...
-nav_order: 14
+nav_order: 16
has_children: true
---
<!--
<html lang="en-US" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
<head>
- <title>ReadMe for ICU 69.1</title>
+ <title>ReadMe for ICU4C</title>
<meta name="COPYRIGHT" content=
"Copyright (C) 2016 and later: Unicode, Inc. and others. License & terms of use: http://www.unicode.org/copyright.html"/>
<!-- meta name="COPYRIGHT" content=
<link type="text/css" href="./icu4c.css" rel="stylesheet"/>
</head>
-<!--
- classes to use with the "body" -
- draft - if the release note is itself a draft (May be combined with the other two)
- rc - if the release note is a release candidate
- milestone - if the release note is a milestone release
--->
- <!-- <body> -->
- <body class="rc">
- <p class="only-draft"><b>Note:</b> This is a draft readme.</p>
-
- <h1>
- <span class="only-draft">DRAFT</span>
- International Components for Unicode<br/>
- <span class="only-rc">Release Candidate</span>
- <!-- <span class="only-milestone">(Milestone Release)</span> -->
- <span class="only-milestone">(Preview Release)</span>
- <abbr title="International Components for Unicode">ICU</abbr> 69.1 ReadMe
- </h1>
-
- <!-- Most of the time we shouldn't need to comment/uncomment this paragraph, just change the body class -->
- <!-- <p class="note only-milestone">This is a development milestone release of ICU
- This milestone is intended for those wishing to get an early look at new features and API changes.
- It is not recommended for production use.</p> -->
- <p class="note only-milestone">This is a preview release of ICU.
- It is not recommended for production use.</p>
-
- <!-- Shouldn't need to comment/uncomment this paragraph, just change the body class -->
- <p class="note only-rc">This is a release candidate version of ICU4C.
- It is not recommended for production use.</p>
-
- <p>Last updated: 2021-Mar-16<br/>
- Copyright © 2016 and later: Unicode, Inc. and others. License & terms of use:
- <a href="http://www.unicode.org/copyright.html">http://www.unicode.org/copyright.html</a><br/>
- Copyright © 1997-2016 International Business Machines Corporation and others.
- All Rights Reserved.</p>
- <!-- Remember that there is a copyright at the end too -->
- <hr/>
-
- <h2 class="TOC">Table of Contents</h2>
-
- <ul class="TOC">
- <li><a href="#Introduction">Introduction</a></li>
-
- <li><a href="#GettingStarted">Getting Started</a></li>
-
- <li><a href="#News">What Is New In This Release?</a></li>
-
- <li><a href="#Download">How To Download the Source Code</a></li>
-
- <li><a href="#SourceCode">ICU Source Code Organization</a></li>
-
- <li>
- <a href="#HowToBuild">How To Build And Install ICU</a>
-
- <ul >
- <li><a href="#RecBuild">Recommended Build Options</a></li>
-
- <li><a href="#UserConfig">User-Configurable Settings</a></li>
-
- <li><a href="#HowToBuildWindows">Windows</a></li>
-
- <li><a href="#HowToBuildCygwin">Cygwin</a></li>
-
- <li><a href="#HowToBuildUNIX">UNIX</a></li>
-
- <li><a href="#HowToBuildZOS">z/OS (os/390)</a></li>
-
- <li><a href="#HowToBuildOS400">IBM i family (IBM i, i5/OS, OS/400)</a></li>
-
- <li><a href="#HowToCrossCompileICU">How to Cross Compile ICU</a></li>
- </ul>
- </li>
-
-
- <li><a href="#HowToPackage">How To Package ICU</a></li>
-
- <li>
- <a href="#ImportantNotes">Important Notes About Using ICU</a>
-
- <ul >
- <li><a href="#ImportantNotesMultithreaded">Using ICU in a Multithreaded
- Environment</a></li>
-
- <li><a href="#ImportantNotesWindows">Windows Platform</a></li>
-
- <li><a href="#ImportantNotesUNIX">UNIX Type Platforms</a></li>
- </ul>
- </li>
-
- <li>
- <a href="#PlatformDependencies">Platform Dependencies</a>
-
- <ul >
- <li><a href="#PlatformDependenciesNew">Porting To A New
- Platform</a></li>
-
- <li><a href="#PlatformDependenciesImpl">Platform Dependent
- Implementations</a></li>
- </ul>
- </li>
- </ul>
- <hr />
-
- <h2><a name="Introduction" href="#Introduction" id=
- "Introduction">Introduction</a></h2>
-
- <p>Today's software market is a global one in which it is desirable to
- develop and maintain one application (single source/single binary) that
- supports a wide variety of languages. The International Components for
- Unicode (ICU) libraries provide robust and full-featured Unicode services on
- a wide variety of platforms to help this design goal. The ICU libraries
- provide support for:</p>
-
- <ul>
- <li>The latest version of the Unicode standard</li>
-
- <li>Character set conversions with support for over 220 codepages</li>
-
- <li>Locale data for more than 300 locales</li>
-
- <li>Language sensitive text collation (sorting) and searching based on the
- Unicode Collation Algorithm (=ISO 14651)</li>
-
- <li>Regular expression matching and Unicode sets</li>
-
- <li>Transformations for normalization, upper/lowercase, script
- transliterations (50+ pairs)</li>
-
- <li>Resource bundles for storing and accessing localized information</li>
-
- <li>Date/Number/Message formatting and parsing of culture specific
- input/output formats</li>
-
- <li>Calendar specific date and time manipulation</li>
-
- <li>Text boundary analysis for finding characters, word and sentence
- boundaries</li>
- </ul>
-
- <p>ICU has a sister project ICU4J that extends the internationalization
- capabilities of Java to a level similar to ICU. The ICU C/C++ project is also
- called ICU4C when a distinction is necessary.</p>
-
- <h2><a name="GettingStarted" href="#GettingStarted" id=
- "GettingStarted">Getting started</a></h2>
-
- <p>This document describes how to build and install ICU on your machine. For
- other information about ICU please see the following table of links.<br />
- The ICU homepage also links to related information about writing
- internationalized software.</p>
-
- <table class="docTable" summary="These are some useful links regarding ICU and internationalization in general.">
- <caption>
- Here are some useful links regarding ICU and internationalization in
- general.
- </caption>
-
- <tr>
- <td>ICU, ICU4C & ICU4J Homepage</td>
-
- <td><a href=
- "http://icu-project.org/">http://icu-project.org/</a></td>
- </tr>
-
- <tr>
- <td>FAQ - Frequently Asked Questions about ICU</td>
-
- <td><a href=
- "https://unicode-org.github.io/icu/userguide/icufaq">https://unicode-org.github.io/icu/userguide/icufaq</a></td>
- </tr>
-
- <tr>
- <td>ICU User's Guide</td>
-
- <td><a href=
- "https://unicode-org.github.io/icu/userguide/">https://unicode-org.github.io/icu/userguide/</a></td>
- </tr>
-
- <tr>
- <td>How To Use ICU</td>
-
- <td><a href=
- "https://unicode-org.github.io/icu/userguide/howtouseicu">https://unicode-org.github.io/icu/userguide/howtouseicu</a></td>
- </tr>
-
- <tr>
- <td>Download ICU Releases</td>
-
- <td><a href=
- "http://site.icu-project.org/download">http://site.icu-project.org/download</a></td>
- </tr>
-
- <tr>
- <td>ICU4C API Documentation Online</td>
-
- <td><a href=
- "http://icu-project.org/apiref/icu4c/">http://icu-project.org/apiref/icu4c/</a></td>
- </tr>
-
- <tr>
- <td>Online ICU Demos</td>
-
- <td><a href=
- "http://demo.icu-project.org/icu-bin/icudemos">http://demo.icu-project.org/icu-bin/icudemos</a></td>
- </tr>
-
- <tr>
- <td>Contacts and Bug Reports/Feature Requests</td>
-
- <td><a href=
- "http://site.icu-project.org/contacts">http://site.icu-project.org/contacts</a></td>
- </tr>
- </table>
-
- <p><strong>Important:</strong> Please make sure you understand the <a href=
- "http://source.icu-project.org/repos/icu/trunk/icu4c/LICENSE">Copyright and License Information</a>.</p>
-
-
- <h2><a name="News" href="#News" id="News">What Is New In This Release?</a></h2>
-
- <p>See the <a href="http://site.icu-project.org/download/69">ICU 69 download page</a>
- for more information on this release, including any other changes, bug fixes, known issues,
- changes to supported platforms and build environments,
- and migration issues for existing applications migrating from previous ICU releases.</p>
-
- <p>See the <a href="APIChangeReport.html">API Change Report</a> for a complete list of
- APIs added, removed, or changed in this release.</p>
-
- <p><a name="RecentPreviousChanges" id="RecentPreviousChanges"></a>For
- changes in previous releases, see the
- main <a href="http://site.icu-project.org/download">ICU download page</a>
- with its version-specific subpages.</p>
-
-
- <h2><a name="Download" href="#Download" id="Download">How To Download the
- Source Code</a></h2>
-
- <p>There are two ways to download ICU releases:</p>
-
- <ul>
- <li><strong>Official Release Snapshot:</strong><br />
- If you want to use ICU (as opposed to developing it), you should download
- an official packaged version of the ICU source code. These versions are
- tested more thoroughly than day-to-day development builds of the system,
- and they are packaged in zip and tar files for convenient download. These
- packaged files can be found at <a href=
- "http://site.icu-project.org/download">http://site.icu-project.org/download</a>.<br />
- The packaged snapshots are named <strong>icu-nnnn.zip</strong> or
- <strong>icu-nnnn.tgz</strong>, where nnnn is the version number. The .zip
- file is used for Windows platforms, while the .tgz file is preferred on
- most other platforms.<br />
- Please unzip this file. </li>
-
- <li><strong>GitHub Source Repository:</strong><br />
- If you are interested in developing features, patches, or bug fixes for
- ICU, you should probably be working with the latest version of the ICU
- source code. You will need to clone and checkout the code from our GitHub repository to
- ensure that you have the most recent version of all of the files. See our
- <a href="http://site.icu-project.org/repository">source
- repository</a> for details.</li>
- </ul>
-
- <h2><a name="SourceCode" href="#SourceCode" id="SourceCode">ICU Source Code
- Organization</a></h2>
-
- <p>In the descriptions below, <strong><i><ICU></i></strong> is the full
- path name of the ICU directory (the top level directory from the distribution
- archives) in your file system. You can also view the <a href=
- "https://unicode-org.github.io/icu/userguide/design">ICU Architectural
- Design</a> section of the User's Guide to see which libraries you need for
- your software product. You need at least the data (<code>[lib]icudt</code>)
- and the common (<code>[lib]icuuc</code>) libraries in order to use ICU.</p>
-
- <table class="docTable" summary="The following files describe the code drop.">
- <caption>
- The following files describe the code drop.
- </caption>
-
- <tr>
- <th scope="col">File</th>
-
- <th scope="col">Description</th>
- </tr>
-
- <tr>
- <td>readme.html</td>
-
- <td>Describes the International Components for Unicode (this file)</td>
- </tr>
-
- <tr>
- <td>LICENSE</td>
-
- <td>Contains the text of the ICU license</td>
- </tr>
- </table>
-
- <p><br />
- </p>
-
- <table class="docTable" summary=
- "The following directories contain source code and data files.">
- <caption>
- The following directories contain source code and data files.
- </caption>
-
- <tr>
- <th scope="col">Directory</th>
-
- <th scope="col">Description</th>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>common</b>/</td>
-
- <td>The core Unicode and support functionality, such as resource bundles,
- character properties, locales, codepage conversion, normalization,
- Unicode properties, Locale, and UnicodeString.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>i18n</b>/</td>
-
- <td>Modules in i18n are generally the more data-driven, that is to say
- resource bundle driven, components. These deal with higher-level
- internationalization issues such as formatting, collation, text break
- analysis, and transliteration.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>layoutex</b>/</td>
-
- <td>Contains the ICU paragraph layout engine.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>io</b>/</td>
-
- <td>Contains the ICU I/O library.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>data</b>/</td>
-
- <td>
- <p>This directory contains the source data in text format, which is
- compiled into binary form during the ICU build process. It contains
- several subdirectories, in which the data files are grouped by
- function. Note that the build process must be run again after any
- changes are made to this directory.</p>
-
- <p>If some of the following directories are missing, it's probably
- because you got an official download. If you need the data source files
- for customization, then please download the complete ICU source code from <a
- href="http://site.icu-project.org/repository">the ICU repository</a>.</p>
-
- <ul>
- <li><b>in/</b> A directory that contains a pre-built data library for
- ICU. A standard source code package will contain this file without
- several of the following directories. This is to simplify the build
- process for the majority of users and to reduce platform porting
- issues.</li>
-
- <li><b>brkitr/</b> Data files for character, word, sentence, title
- casing and line boundary analysis.</li>
-
- <li><b>coll/</b> Data for collation tailorings. The makefile
- <b>colfiles.mk</b> contains the list of resource bundle files.</li>
-
- <li><b>locales/</b> These .txt files contain ICU language and
- culture-specific localization data. Two special bundles are
- <b>root</b>, which is the fallback data and parent of other bundles,
- and <b>index</b>, which contains a list of installed bundles. The
- makefile <b>resfiles.mk</b> contains the list of resource bundle
- files. Some of the locale data is split out into the type-specific
- directories curr, lang, region, unit, and zone, described below.</li>
-
- <li><b>curr/</b> Locale data for currency symbols and names (including
- plural forms), with its own makefile <b>resfiles.mk</b>.</li>
-
- <li><b>lang/</b> Locale data for names of languages, scripts, and locale
- key names and values, with its own makefile <b>resfiles.mk</b>.</li>
-
- <li><b>region/</b> Locale data for names of regions, with its own
- makefile <b>resfiles.mk</b>.</li>
-
- <li><b>unit/</b> Locale data for measurement unit patterns and names,
- with its own makefile <b>resfiles.mk</b>.</li>
-
- <li><b>zone/</b> Locale data for time zone names, with its own
- makefile <b>resfiles.mk</b>.</li>
-
- <li><b>mappings/</b> Here are the code page converter tables. These
- .ucm files contain mappings to and from Unicode. These are compiled
- into .cnv files. <b>convrtrs.txt</b> is the alias mapping table from
- various converter name formats to ICU internal format and vice versa.
- It produces cnvalias.icu. The makefiles <b>ucmfiles.mk,
- ucmcore.mk,</b> and <b>ucmebcdic.mk</b> contain the list of
- converters to be built.</li>
-
- <li><b>translit/</b> This directory contains transliterator rules as
- resource bundles, a makefile <b>trnsfiles.mk</b> containing the list
- of installed system translitaration files, and as well the special
- bundle <b>translit_index</b> which lists the system transliterator
- aliases.</li>
-
- <li><b>unidata/</b> This directory contains the Unicode data files.
- Please see <a href=
- "http://www.unicode.org/">http://www.unicode.org/</a> for more
- information.</li>
-
- <li><b>misc/</b> The misc directory contains other data files which
- did not fit into the above categories, including time zone
- information, region-specific data, and other data derived from CLDR
- supplemental data.</li>
-
- <li><b>out/</b> This directory contains the assembled memory mapped
- files.</li>
-
- <li><b>out/build/</b> This directory contains intermediate (compiled)
- files, such as .cnv, .res, etc.</li>
- </ul>
-
- <p>If you are creating a special ICU build, you can set the ICU_DATA
- environment variable to the out/ or the out/build/ directories, but
- this is generally discouraged because most people set it incorrectly.
- You can view the <a href=
- "https://unicode-org.github.io/icu/userguide/icudata">ICU Data
- Management</a> section of the ICU User's Guide for details.</p>
- </td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/test/<b>intltest</b>/</td>
-
- <td>A test suite including all C++ APIs. For information about running
- the test suite, see the build instructions specific to your platform
- later in this document.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/test/<b>cintltst</b>/</td>
-
- <td>A test suite written in C, including all C APIs. For information
- about running the test suite, see the build instructions specific to your
- platform later in this document.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/test/<b>iotest</b>/</td>
-
- <td>A test suite written in C and C++ to test the icuio library. For
- information about running the test suite, see the build instructions
- specific to your platform later in this document.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/test/<b>testdata</b>/</td>
-
- <td>Source text files for data, which are read by the tests. It contains
- the subdirectories <b>out/build/</b> which is used for intermediate
- files, and <b>out/</b> which contains <b>testdata.dat.</b></td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>tools</b>/</td>
-
- <td>Tools for generating the data files. Data files are generated by
- invoking <i><ICU></i>/source/data/build/makedata.bat on Win32 or
- <i><ICU></i>/source/make on UNIX.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>samples</b>/</td>
-
- <td>Various sample programs that use ICU</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>extra</b>/</td>
-
- <td>Non-supported API additions. Currently, it contains the 'uconv' tool
- to perform codepage conversion on files.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/<b>packaging</b>/</td>
-
- <td>This directory contain scripts and tools for packaging the final
- ICU build for various release platforms.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>config</b>/</td>
-
- <td>Contains helper makefiles for platform specific build commands. Used
- by 'configure'.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/source/<b>allinone</b>/</td>
-
- <td>Contains top-level ICU workspace and project files, for instance to
- build all of ICU under one MSVC project.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/<b>include</b>/</td>
-
- <td>Contains the headers needed for developing software that uses ICU on
- Windows.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/<b>lib</b>/</td>
-
- <td>Contains the import libraries for linking ICU into your Windows
- application.</td>
- </tr>
-
- <tr>
- <td><i><ICU></i>/<b>bin</b>/</td>
-
- <td>Contains the libraries and executables for using ICU on Windows.</td>
- </tr>
- </table>
- <!-- end of ICU structure ==================================== -->
-
- <h2><a name="HowToBuild" href="#HowToBuild" id="HowToBuild">How To Build And
- Install ICU</a></h2>
-
- <h3><a name="RecBuild" href="#RecBuild" id=
- "RecBuild">Recommended Build Options</a></h3>
-
- <p>Depending on the platform and the type of installation,
- we recommend a small number of modifications and build options.
- Note that C99 compatibility is now required.</p>
- <ul>
- <li><b>Namespace (ICU 61 and later):</b>
- Since ICU 61, call sites need to qualify ICU types explicitly,
- for example <code>icu::UnicodeString</code>,
- or do <code>using icu::UnicodeString;</code> where appropriate.
- If your code relies on the "using namespace icu;" that used to be in unicode/uversion.h,
- then you need to update your code.<br />
- You could temporarily (until you have more time to update your code)
- revert to the default "using"
- via <code>-DU_USING_ICU_NAMESPACE=1</code>
- or by modifying unicode/uversion.h:
-<pre>Index: icu4c/source/common/unicode/uversion.h
-===================================================================
---- icu4c/source/common/unicode/uversion.h (revision 40704)
-+++ icu4c/source/common/unicode/uversion.h (working copy)
-@@ -127,7 +127,7 @@
- defined(U_LAYOUTEX_IMPLEMENTATION) || defined(U_TOOLUTIL_IMPLEMENTATION)
- # define U_USING_ICU_NAMESPACE 0
- # else
--# define U_USING_ICU_NAMESPACE 0
-+# define U_USING_ICU_NAMESPACE 1
- # endif
- # endif
- # if U_USING_ICU_NAMESPACE
-</pre>
- </li>
- <li><b>Namespace (ICU 60 and earlier):</b> By default, unicode/uversion.h has
- "using namespace icu;" which defeats much of the purpose of the namespace.
- (This is for historical reasons: Originally, ICU4C did not use namespaces,
- and some compilers did not support them. The default "using" statement
- preserves source code compatibility.)<br />
- You should turn this off
- via <code>-DU_USING_ICU_NAMESPACE=0</code>
- or by modifying unicode/uversion.h:
-<pre>Index: source/common/unicode/uversion.h
-===================================================================
---- source/common/unicode/uversion.h (revision 26606)
-+++ source/common/unicode/uversion.h (working copy)
-@@ -180,7 +180,8 @@
- # define U_NAMESPACE_QUALIFIER U_ICU_NAMESPACE::
-
- # ifndef U_USING_ICU_NAMESPACE
--# define U_USING_ICU_NAMESPACE 1
-+ // Set to 0 to force namespace declarations in ICU usage.
-+# define U_USING_ICU_NAMESPACE 0
- # endif
- # if U_USING_ICU_NAMESPACE
- U_NAMESPACE_USE
-</pre>
- ICU call sites then either qualify ICU types explicitly,
- for example <code>icu::UnicodeString</code>,
- or do <code>using icu::UnicodeString;</code> where appropriate.</li>
- <li><b>Hardcode the default charset to UTF-8:</b> On platforms where
- the default charset is always UTF-8,
- like MacOS X and some Linux distributions,
- we recommend hardcoding ICU's default charset to UTF-8.
- This means that some implementation code becomes simpler and faster,
- and statically linked ICU libraries become smaller.
- (See the <a href="http://icu-project.org/apiref/icu4c/platform_8h.html#a0a33e1edf3cd23d9e9c972b63c9f7943">U_CHARSET_IS_UTF8</a>
- API documentation for more details.)<br />
- You can <code>-DU_CHARSET_IS_UTF8=1</code> or
- modify unicode/utypes.h (in ICU 4.8 and below)
- or modify unicode/platform.h (in ICU 49 and higher):
-<pre>Index: source/common/unicode/utypes.h
-===================================================================
---- source/common/unicode/utypes.h (revision 26606)
-+++ source/common/unicode/utypes.h (working copy)
-@@ -160,7 +160,7 @@
- * @see UCONFIG_NO_CONVERSION
- */
- #ifndef U_CHARSET_IS_UTF8
--# define U_CHARSET_IS_UTF8 0
-+# define U_CHARSET_IS_UTF8 1
- #endif
-
- /*===========================================================================*/
-</pre></li>
- <li><b>UnicodeString constructors:</b> The UnicodeString class has
- several single-argument constructors that are not marked "explicit"
- for historical reasons.
- This can lead to inadvertent construction of a <code>UnicodeString</code>
- with a single character by using an integer,
- and it can lead to inadvertent dependency on the conversion framework
- by using a C string literal.<br />
- Beginning with ICU 49, you should do the following:
- <ul>
- <li>Consider marking the from-<code>UChar</code>
- and from-<code>UChar32</code> constructors explicit via
- <code>-DUNISTR_FROM_CHAR_EXPLICIT=explicit</code> or similar.</li>
- <li>Consider marking the from-<code>const char*</code> and
- from-<code>const UChar*</code> constructors explicit via
- <code>-DUNISTR_FROM_STRING_EXPLICIT=explicit</code> or similar.</li>
- </ul>
- Note: The ICU test suites cannot be compiled with these settings.
- </li>
- <li><b>utf.h, utf8.h, utf16.h, utf_old.h:</b>
- By default, utypes.h (and thus almost every public ICU header)
- includes all of these header files.
- Often, none of them are needed, or only one or two of them.
- All of utf_old.h is deprecated or obsolete.<br />
- Beginning with ICU 49,
- you should define <code>U_NO_DEFAULT_INCLUDE_UTF_HEADERS</code> to 1
- (via -D or uconfig.h, as above)
- and include those header files explicitly that you actually need.<br />
- Note: The ICU test suites cannot be compiled with this setting.</li>
- <li><b>utf_old.h:</b>
- All of utf_old.h is deprecated or obsolete.<br />
- Beginning with ICU 60,
- you should define <code>U_HIDE_OBSOLETE_UTF_OLD_H</code> to 1
- (via -D or uconfig.h, as above).
- Use of any of these macros should be replaced as noted
- in the comments for the obsolete macro.<br />
- Note: The ICU test suites <i>can</i> be compiled with this setting.</li>
- <li><b>.dat file:</b> By default, the ICU data is built into
- a shared library (DLL). This is convenient because it requires no
- install-time or runtime configuration,
- but the library is platform-specific and cannot be modified.
- A .dat package file makes the opposite trade-off:
- Platform-portable (except for endianness and charset family, which
- can be changed with the icupkg tool)
- and modifiable (also with the icupkg tool).
- If a path is set, then single data files (e.g., .res files)
- can be copied to that location to provide new locale data
- or conversion tables etc.<br />
- The only drawback with a .dat package file is that the application
- needs to provide ICU with the file system path to the package file
- (e.g., by calling <code>u_setDataDirectory()</code>)
- or with a pointer to the data (<code>udata_setCommonData()</code>)
- before other ICU API calls.
- This is usually easy if ICU is used from an application where
- <code>main()</code> takes care of such initialization.
- It may be hard if ICU is shipped with
- another shared library (such as the Xerces-C++ XML parser)
- which does not control <code>main()</code>.<br />
- See the <a href="https://unicode-org.github.io/icu/userguide/icudata">User Guide ICU Data</a>
- chapter for more details.<br />
- If possible, we recommend building the .dat package.
- Specify <code>--with-data-packaging=archive</code>
- on the configure command line, as in<br />
- <code>runConfigureICU Linux --with-data-packaging=archive</code><br />
- (Read the configure script's output for further instructions.
- On Windows, the Visual Studio build generates both the .dat package
- and the data DLL.)<br />
- Be sure to install and use the tiny stubdata library
- rather than the large data DLL.</li>
- <li><b>Static libraries:</b> It may make sense to build the ICU code
- into static libraries (.a) rather than shared libraries (.so/.dll).
- Static linking reduces the overall size of the binary by removing
- code that is never called.<br />
- Example configure command line:<br />
- <code>runConfigureICU Linux --enable-static --disable-shared</code></li>
- <li><b>Out-of-source build:</b> It is usually desirable to keep the ICU
- source file tree clean and have build output files written to
- a different location. This is called an "out-of-source build".
- Simply invoke the configure script from the target location:
-<pre>~/icu$ git clone export https://github.com/unicode-org/icu.git
-~/icu$ mkdir icu4c-build
-~/icu$ cd icu4c-build
-~/icu/icu4c-build$ ../icu/icu4c/source/runConfigureICU Linux
-~/icu/icu4c-build$ make check</pre><br/>
- (Note: this example shows a relative path to
- <code>runConfigureICU</code>. If you experience difficulty,
- try using an absolute path to <code>runConfigureICU</code>
- instead.)
- </li>
- </ul>
- <h4>ICU as a System-Level Library</h4>
- <p>If ICU is installed as a system-level library, there are further
- opportunities and restrictions to consider.
- For details, see the <em>Using ICU as an Operating System Level Library</em>
- section of the <a href="https://unicode-org.github.io/icu/userguide/design">User Guide ICU Architectural Design</a> chapter.</p>
- <ul>
- <li><b>Data path:</b> For a system-level library, it is best to load
- ICU data from the .dat package file because the file system path
- to the .dat package file can be hardcoded. ICU will automatically set
- the path to the final install location using U_ICU_DATA_DEFAULT_DIR.
- Alternatively, you can set <code>-DICU_DATA_DIR=/path/to/icu/data</code>
- when building the ICU code. (Used by source/common/putil.c.)<br/>
- Consider also setting <code>-DICU_NO_USER_DATA_OVERRIDE</code>
- if you do not want the "ICU_DATA" environment variable to be used.
- (An application can still override the data path via
- <code>u_setDataDirectory()</code> or
- <code>udata_setCommonData()</code>.</li>
- <li><b>Hide draft API:</b> API marked with <code>@draft</code>
- is new and not yet stable. Applications must not rely on unstable
- APIs from a system-level library.
- Define <code>U_HIDE_DRAFT_API</code>, <code>U_HIDE_INTERNAL_API</code>
- and <code>U_HIDE_SYSTEM_API</code>
- by modifying unicode/utypes.h before installing it.</li>
- <li><b>Only C APIs:</b> Applications must not rely on C++ APIs from a
- system-level library because binary C++ compatibility
- across library and compiler versions is very hard to achieve.
- Most ICU C++ APIs are in header files that contain a comment with
- <code>\brief C++ API</code>.
- Consider not installing these header files, or define <code>U_SHOW_CPLUSPLUS_API</code>
- to be <code>0</code> by modifying unicode/utypes.h before installing it.</li>
- <li><b>Disable renaming:</b> By default, ICU library entry point names
- have an ICU version suffix. Turn this off for a system-level installation,
- to enable upgrading ICU without breaking applications. For example:<br />
- <code>runConfigureICU Linux --disable-renaming</code><br />
- The public header files from this configuration must be installed
- for applications to include and get the correct entry point names.</li>
- </ul>
-
- <h3><a name="UserConfig" href="#UserConfig" id="UserConfig">User-Configurable Settings</a></h3>
- <p>ICU4C can be customized via a number of user-configurable settings.
- Many of them are controlled by preprocessor macros which are
- defined in the <code>source/common/unicode/uconfig.h</code> header file.
- Some turn off parts of ICU, for example conversion or collation,
- trading off a smaller library for reduced functionality.
- Other settings are recommended (see previous section)
- but their default values are set for better source code compatibility.</p>
-
- <p>In order to change such user-configurable settings, you can
- either modify the <code>uconfig.h</code> header file by adding
- a specific <code>#define ...</code> for one or more of the macros
- before they are first tested,
- or set the compiler's preprocessor flags (<code>CPPFLAGS</code>) to include
- an equivalent <code>-D</code> macro definition.</p>
-
- <h3><a name="HowToBuildWindows" href="#HowToBuildWindows" id=
- "HowToBuildWindows">How To Build And Install On Windows</a></h3>
-
- <p>Building International Components for Unicode requires:</p>
-
- <ul>
- <li>Microsoft Windows</li>
-
- <li>Microsoft Visual C++ (part of <a href="https://www.visualstudio.com/">Visual Studio</a>) (from either Visual Studio 2015 or Visual Studio 2017)</li>
-
- <li><i><b>Optional:</b></i> A version of the <a href="https://developer.microsoft.com/windows/downloads">Windows 10 SDK</a> (if you want to build the UWP projects)</li>
- </ul>
- <p class="note"><a href="#HowToBuildCygwin">Cygwin</a> is required if using a version of MSVC other than the one
- compatible with the supplied project files or if other compilers are used to build ICU. (e.g. GCC)</p>
-
- <p>The steps are:</p>
-
- <ol>
- <li>Unzip the <tt>icu-XXXX.zip</tt> file into any convenient location.<br/>
- <ul class="no-left-margin">
- <li>You can use the built-in zip functionality of Windows Explorer to do this.
- Right-click on the .zip file and choose the "Extract All" option from the context menu.
- This will open a new window where you can choose the output location to put the files.</li>
- <li>Alternatively, you can use a 3<sup>rd</sup> party GUI tool like 7-Zip or WinZip to do this as well.</li>
- </ul>
- </li>
-
- <li>Be sure that the ICU binary directory, (ex: <i><ICU></i><tt>\bin\</tt>), is
- included in the <strong>PATH</strong> environment variable. The tests will
- not work without the location of the ICU DLL files in the path.
- Note that the binary directory name can depend on what architecture you select when you compile ICU.
- For x86 or 32-bit builds, the binary directory is "<tt>bin</tt>". Whereas for x64 or 64-bit builds
- the binary directory is "<tt>bin64</tt>".
- </li>
-
- <li>Open the "<i><ICU></i><tt>\source\allinone\allinone.sln</tt>" solution
- file in 'Visual Studio 2017'. (This solution includes all the
- International Components for Unicode libraries, necessary ICU building
- tools, and the test suite projects). Please see the
- <a href="#HowToBuildWindowsCommandLine">command line note below</a> if you want to
- build from the command line instead.</li>
-
- <li>If you are building using 'Visual Studio 2015' instead, or if you are building the UWP projects and you have a different
- version of the Windows 10 SDK installed you will first need to modify the two "<tt>Build.Windows.*.props</tt>" files
- in the "<tt>allinone</tt>" directory before you can open the "allinone" solution file.
- Please see the notes below about <a href="#HowToUseOtherVSVersions">building with other versions of Visual Studio</a> and the
- notes on <a href="#HowToRetargetTheWin10SDK">re-targeting the Windows 10 SDK for the UWP projects</a> for details. Alternatively,
- you can <a href="#HowToSkipBuildingUWP">skip building the UWP projects</a> entirely as well.
- </li>
-
- <li>Set the active platform to "Win32" or "x64" (See <a href="#HowToBuildWindowsPlatform">Windows platform note</a> below)
- and configuration to "Debug" or "Release" (See <a href="#HowToBuildWindowsConfig">Windows configuration note</a> below).</li>
-
- <li>Choose the "Build" menu and select "Rebuild Solution". If you want to
- build the Debug and Release at the same time, see the <a href=
- "#HowToBuildWindowsBatch">batch configuration note</a> below.</li>
-
- <li>Run the tests. They can be run from the command line or from within Visual Studio.
-
- <h4>Running the Tests from the Windows Command Line (cmd)</h4>
- <ul>
- <li>The general syntax is:<br />
- <div class="indent">
- <tt><i><ICU></i>\source\allinone\icucheck.bat <i>Platform</i> <i>Configuration</i></tt>
- </div>
- </li>
- <li>So, for example for x86 (32-bit) and Debug, use the following:<br />
- <samp><i><ICU></i>\source\allinone\icucheck.bat <b>x86</b> <b>Debug</b></samp>
- For x86 (32-bit) and Release:
- <samp><i><ICU></i>\source\allinone\icucheck.bat <b>x86</b> <b>Release</b></samp>
- For x64 (64-bit) and Debug:
- <samp><i><ICU></i>\source\allinone\icucheck.bat <b>x64</b> <b>Debug</b></samp>
- For x64 (64-bit) and Release:
- <samp><i><ICU></i>\source\allinone\icucheck.bat <b>x64</b> <b>Release</b></samp>
- </li>
- </ul>
-
- <h4>Running the Tests from within Visual Studio</h4>
-
- <ol>
- <li>Run the C++ test suite, "<tt>intltest</tt>". To do this: set the active startup
- project to "intltest", and press Ctrl+F5 to run it. Make sure that it
- passes without any errors.</li>
-
- <li>Run the C test suite, "<tt>cintltst</tt>". To do this: set the active startup
- project to "cintltst", and press Ctrl+F5 to run it. Make sure that it
- passes without any errors.</li>
-
- <li>Run the I/O test suite, "<tt>iotest</tt>". To do this: set the active startup
- project to "iotest", and press Ctrl+F5 to run it. Make sure that it passes
- without any errors.</li>
- </ol>
- </li>
-
- <li>You are now able to develop applications with ICU by using the
- libraries and tools in <tt><i><ICU></i>\bin\</tt>. The headers are in
- <tt><i><ICU></i>\include\</tt> and the link libraries are in
- <tt><i><ICU></i>\lib\</tt>. To install the ICU runtime on a machine, or ship
- it with your application, copy the needed components from
- <tt><i><ICU></i>\bin\</tt> to a location on the system PATH or to your
- application directory.</li>
- </ol>
-
- <p><a name="HowToUseOtherVSVersions" id="HowToUseOtherVSVersions">
- <strong>Building with other versions of Visual Studio Note:</strong></a>
- The particular version of the MSVC compiler tool-set (and thus the corresponding version of Visual Studio) that
- is used to compile ICU is determined by the "<tt>PlatformToolset</tt>" property. This property is stored in two
- different shared files that are used to set common configuration settings amongst the various ICU "<tt>*.vcxproj</tt>" project files.
-
- For the non-UWP projects, this setting is in the shared file called "<tt>Build.Windows.ProjectConfiguration.props</tt>" located
- in the "allinone" directory.
-
- For the UWP projects, this setting is in the shared file called "<tt>Build.Windows.UWP.ProjectConfiguration.props</tt>", also
- located in the "allinone" directory.
- <br/>
- The value of <tt>v140</tt> corresponds to the Visual Studio 2015 compiler tool set, whereas the value of
- <tt>v141</tt> corresponds to the Visual Studio 2017 compiler tool set.
-
- <br/>In order to build the non-UWP projects with Visual Studio 2015 you will need to modify the file
- called "<tt>Build.Windows.ProjectConfiguration.props</tt>" to change the value of the <tt>PlatformToolset</tt> property.
-
- Note however that Visual Studio 2017 is required for building the UWP projects.
- </p>
-
- <p>Please consider: Using older versions of the MSVC compiler is generally not recommended due to the improved support for the C++11 standard
- in newer versions of the compiler.</p>
-
- <p><a name="HowToRetargetTheWin10SDK" id="HowToRetargetTheWin10SDK">
- <strong>Re-targeting the Windows 10 SDK for the UWP projects Note:</strong></a>
-
- If the version of the Windows 10 SDK that you have installed does not match the version used by the UWP projects, then you
- will need to "retarget" them to use the version of the SDK that you have installed instead.
-
- There are two ways to do this:
- <ul>
- <li>In Visual Studio you can right-click on the UWP projects in the 'Solution Explorer' and select the
- option 'Retarget Projects' from the context menu. This will open up a window where you can select the
- SDK version to target from a drop-down list of the various SDKs that are installed on the machine.</li>
-
- <li>Alternatively, you can manually edit the shared file called "<tt>Build.Windows.UWP.ProjectConfiguration.props</tt>"
- which is located in the "allinone" directory. You will need to change the of the
- "<tt>WindowsTargetPlatformVersion</tt>" property to the version of the SDK that you would like to use instead.</li>
- </ul>
- </p>
-
- <p><a name="HowToBuildWindowsCommandLine" id=
- "HowToBuildWindowsCommandLine"><strong>Using MSBUILD At The Command Line Note:</strong></a>
- You can build ICU from the command line instead of using the Visual Studio GUI.
-
- Assuming that you have properly installed Visual Studio to support command line building, you
- should have a shortcut for the "Developer Command Prompt" listed in the Start Menu.
- (For Visual Studio 2017 you will need to install the "Desktop development with C++" option).</p>
-
- <ul>
- <li>Open the "Developer Command Prompt" shortcut from the Start Menu. (This will open up a new command line window).</li>
- <li>From within the "Developer Command Prompt" change directory (<tt>cd</tt>) to the ICU source directory.</li>
- <li>You can then use either '<tt>msbuild</tt>' directly, or you can use the '<tt>devenv.com</tt>' command to build ICU.</li>
- <li>Using <tt>MSBUILD</tt>:</li>
- <ul class="no-left-margin">
- <li>To build the 32-bit Debug version, use the following command line:<br/>
- <code>'msbuild source\allinone\allinone.sln /p:Configuration=Debug /p:Platform=Win32'</code>.</li>
- <li>To build the 64-bit Release version, use the following command line:<br/>
- <code>'msbuild source\allinone\allinone.sln /p:Configuration=Release /p:Platform=x64'</code>.</li>
- </ul>
- <li>Using <tt>devenv.com</tt>:</li>
- <ul class="no-left-margin">
- <li>To build the 32-bit Debug version, use the following command line:<br/>
- <code>'devenv.com source\allinone\allinone.sln /build "Debug|Win32"'</code>.</li>
- <li>To build the 64-bit Release version, use the following command line:<br/>
- <code>'devenv.com source\allinone\allinone.sln /build "Release|x64"'</code>.</li>
- </ul>
- </ul>
-
- <p><a name="HowToSkipBuildingUWP" id=
- "HowToSkipBuildingUWP"><strong>Skipping the UWP Projects on the Command Line Note:</strong></a>
- You can skip (or omit) building the UWP projects on the command line by passing the argument
- '<code>SkipUWP=true</code>' to either MSBUILD or devenv.</p>
-
- <ul>
- <li>For example, using <tt>MSBUILD</tt>:</li>
- <ul class="no-left-margin">
- <li>To skip building the UWP projects with a 32-bit Debug build, use the following command line:<br/>
- <code>'msbuild source\allinone\allinone.sln /p:Configuration=Debug /p:Platform=Win32 /p:SkipUWP=true'</code>.</li>
- <li>To skip building the UWP projects with a 64-bit Release version, use the following command line:<br/>
- <code>'msbuild source\allinone\allinone.sln /p:Configuration=Release /p:Platform=x64 /p:SkipUWP=true'</code>.</li>
- </ul>
- </ul>
-
- <p>You can also use Cygwin with the MSVC compiler to build ICU, and you can refer to the <a href=
- "#HowToBuildCygwin">How To Build And Install On Windows with Cygwin</a>
- section for more details.</p>
-
- <p><a name="HowToBuildWindowsPlatform" id=
- "HowToBuildWindowsPlatform"><strong>Setting Active Platform
- Note:</strong></a> Even though you are able to select "x64" as the active platform, if your operating system is
- not a 64 bit version of Windows, the build will fail. To set the active platform, two different possibilities are:</p>
-
- <ul>
- <li>Choose "Build" menu, select "Configuration Manager...", and select
- "Win32" or "x64" for the Active Platform Solution.</li>
-
- <li>Another way is to select the desired build configuration from "Solution
- Platforms" dropdown menu from the standard toolbar. It will say
- "Win32" or "x64" in the dropdown list.</li>
- </ul>
-
- <p><a name="HowToBuildWindowsConfig" id=
- "HowToBuildWindowsConfig"><strong>Setting Active Configuration
- Note:</strong></a> To set the active configuration, two different
- possibilities are:</p>
-
- <ul>
- <li>Choose "Build" menu, select "Configuration Manager...", and select
- "Release" or "Debug" for the Active Configuration Solution.</li>
-
- <li>Another way is to select the desired build configuration from "Solution
- Configurations" dropdown menu from the standard toolbar. It will say
- "Release" or "Debug" in the dropdown list.</li>
- </ul>
-
- <p><a name="HowToBuildWindowsBatch" id="HowToBuildWindowsBatch"><strong>Batch
- Configuration Note:</strong></a> If you want to build the Win32 and x64 platforms and
- Debug and Release configurations at the same time, choose "Build" menu, and select "Batch
- Build...". Click the "Select All" button, and then click the "Rebuild"
- button.</p>
-
- <h3><a name="HowToBuildCygwin" href="#HowToBuildCygwin" id=
- "HowToBuildCygwin">How To Build And Install On Windows with Cygwin</a></h3>
-
- <p>Building International Components for Unicode with this configuration
- requires:</p>
-
- <ul>
- <li>Microsoft Windows</li>
-
- <li>Microsoft Visual C++ (from Visual Studio 2015 or newer, when gcc isn't used).</li>
-
- <li>
- Cygwin with the following installed:
-
- <ul>
- <li>bash</li>
-
- <li>GNU make</li>
-
- <li>ar</li>
-
- <li>ranlib</li>
-
- <li>man (if you plan to look at the man pages)</li>
- </ul>
- </li>
- </ul>
-
- <p>There are two ways you can build ICU with Cygwin. You can build with gcc
- or Microsoft Visual C++. If you use gcc, the resulting libraries and tools
- will depend on the Cygwin environment. If you use Microsoft Visual C++, the
- resulting libraries and tools do not depend on Cygwin and can be more easily
- distributed to other Windows computers (the generated man pages and shell
- scripts still need Cygwin). To build with gcc, please follow the "<a href=
- "#HowToBuildUNIX">How To Build And Install On UNIX</a>" instructions, while
- you are inside a Cygwin bash shell. To build with Microsoft Visual C++,
- please use the following instructions:</p>
-
- <ol>
- <li>Start the Windows "Command Prompt" window. This is different from the
- gcc build, which requires the Cygwin Bash command prompt. The Microsoft
- Visual C++ compiler will not work with a bash command prompt.</li>
-
- <li>If the computer isn't set up to use Visual C++ from the command line,
- you need to run vcvars32.bat.<br />For example:<br />
- "<tt>C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\vcvars32.bat</tt>"
- can be used for 32-bit builds <strong>or</strong> <br />
- "<tt>C:\Program Files (x86)\Microsoft Visual Studio 14\VC\bin\x86_amd64\vcvarsx86_amd64.bat</tt>"
- can be used for 64-bit builds on Windows x64.</li>
-
- <li>Unzip the icu-XXXX.zip file into any convenient location. Using command
- line zip, type "unzip -a icu-XXXX.zip -d drive:\directory", or just use
- WinZip.</li>
-
- <li>Change directory to "icu/source", which is where you unzipped ICU.</li>
-
- <li>Run "<tt>bash <a href="source/runConfigureICU">./runConfigureICU</a>
- Cygwin/MSVC</tt>" (See <a href="#HowToWindowsConfigureICU">Windows
- configuration note</a> and non-functional configure options below).</li>
-
- <li>Type <tt>"make"</tt> to compile the libraries and all the data files.
- This make command should be GNU make.</li>
-
- <li>Optionally, type <tt>"make check"</tt> to run the test suite, which
- checks for ICU's functionality integrity (See <a href=
- "#HowToTestWithoutGmake">testing note</a> below).</li>
-
- <li>Type <tt>"make install"</tt> to install ICU. If you used the --prefix=
- option on configure or runConfigureICU, ICU will be installed to the
- directory you specified. (See <a href="#HowToInstallICU">installation
- note</a> below).</li>
- </ol>
-
- <p><a name="HowToWindowsConfigureICU" id=
- "HowToWindowsConfigureICU"><strong>Configuring ICU on Windows
- NOTE:</strong></a> </p>
- <p>
- Ensure that the order of the PATH is MSVC, Cygwin, and then other PATHs. The configure
- script needs certain tools in Cygwin (e.g. grep).
- </p>
- <p>
- Also, you may need to run <tt>"dos2unix.exe"</tt> on all of the scripts (e.g. configure)
- in the top source directory of ICU. To avoid this issue, you can download
- the ICU source for Unix platforms (icu-xxx.tgz).
- </p>
- <p>In addition to the Unix <a href=
- "#HowToConfigureICU">configuration note</a> the following configure options
- currently do not work on Windows with Microsoft's compiler. Some options can
- work by manually editing <tt>icu/source/common/unicode/pwin32.h</tt>, but
- manually editing the files is not recommended.</p>
-
- <ul>
- <li><tt>--disable-renaming</tt></li>
-
- <li><tt>--enable-tracing</tt></li>
-
- <li><tt>--enable-rpath</tt></li>
-
- <li><tt>--enable-static</tt> (Requires that U_STATIC_IMPLEMENTATION be
- defined in user code that links against ICU's static libraries.)</li>
-
- <li><tt>--with-data-packaging=files</tt> (The pkgdata tool currently does
- not work in this mode. Manual packaging is required to use this mode.)</li>
- </ul>
-
- <h3><a name="HowToBuildUNIX" href="#HowToBuildUNIX" id="HowToBuildUNIX">How
- To Build And Install On UNIX</a></h3>
-
- <p>Building International Components for Unicode on UNIX requires:</p>
-
- <ul>
- <li>A C++ compiler installed on the target machine (for example: gcc, CC,
- xlC_r, aCC, cxx, etc...).</li>
-
- <li>An ANSI C compiler installed on the target machine (for example:
- cc).</li>
-
- <li>A recent version of GNU make (3.80+).</li>
-
- <li>For a list of z/OS tools please view the <a href="#HowToBuildZOS">z/OS
- build section</a> of this document for further details.</li>
- </ul>
-
- <p>Here are the steps to build ICU:</p>
-
- <ol>
- <li>Decompress the icu-<i>X</i>.<i>Y</i>.tgz (or
- icu-<i>X</i>.<i>Y</i>.tar.gz) file. For example, <samp>gunzip -d < icu-<i>X</i>.<i>Y</i>.tgz | tar xvf -</samp></li>
-
- <li>Change directory to <code>icu/source</code>.
- <samp>cd icu/source</samp>
- </li>
-
- <li>Some files may have the wrong permissions.<samp>chmod +x runConfigureICU configure install-sh</samp></li>
-
- <li>Run the <span style='font-family: monospace;'><a href="source/runConfigureICU">runConfigureICU</a></span>
- script for your platform. (See <a href="#HowToConfigureICU">configuration
- note</a> below).</li>
-
- <li>Now build: <samp>gmake</samp> (or just <code>make</code> if GNU make is the default make on
- your platform) to compile the libraries and all the data files. The proper
- name of the GNU make command is printed at the end of the configuration
- run, as in <tt>"You must use gmake to compile ICU"</tt>.
- <br/>
- Note that the compilation command output may be simplified on your platform. If this is the case, you will see just:
- <tt>gcc ... stubdata.c</tt>
- rather than
- <tt>gcc -DU_NO_DEFAULT_INCLUDE_UTF_HEADERS=1 -D_REENTRANT -I../common -DU_ATTRIBUTE_DEPRECATED= -O2 -Wall -std=c99 -pedantic -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -c -DPIC -fPIC -o stubdata.o stubdata.c</tt>
- <br/>
- If you need to see the whole compilation line, use <span style='font-family: monospace;'>"gmake VERBOSE=1"</span>. The full compilation line will print if an error occurs.
- </li>
-
- <li>Optionally,<samp>gmake check</samp> will run the test suite, which
- checks for ICU's functionality integrity (See <a href=
- "#HowToTestWithoutGmake">testing note</a> below).</li>
-
- <li>To install, <samp>gmake install</samp> to install ICU. If you used the --prefix=
- option on configure or runConfigureICU, ICU will be installed to the
- directory you specified. (See <a href="#HowToInstallICU">installation
- note</a> below).</li>
- </ol>
-
- <p><a name="HowToConfigureICU" id="HowToConfigureICU"><strong>Configuring ICU
- NOTE:</strong></a> Type <tt>"./runConfigureICU --help"</tt> for help on how
- to run it and a list of supported platforms. You may also want to type
- <tt>"./configure --help"</tt> to print the available configure options that
- you may want to give runConfigureICU. If you are not using the
- runConfigureICU script, or your platform is not supported by the script, you
- may need to set your CC, CXX, CFLAGS and CXXFLAGS environment variables, and
- type <tt>"./configure"</tt>.
- HP-UX users, please see this <a href="#ImportantNotesHPUX">note regarding
- HP-UX multithreaded build issues</a> with newer compilers. Solaris users,
- please see this <a href="#ImportantNotesSolaris">note regarding Solaris
- multithreaded build issues</a>.</p>
-
- <p>ICU is built with strict compiler warnings enabled by default. If this
- causes excessive numbers of warnings on your platform, use the --disable-strict
- option to configure to reduce the warning level.</p>
-
- <p><a name="HowToTestWithoutGmake" id="HowToTestWithoutGmake"><strong>Running
- The Tests From The Command Line NOTE:</strong></a> You may have to set
- certain variables if you with to run test programs individually, that is
- apart from "gmake check". The environment variable <strong>ICU_DATA</strong>
- can be set to the full pathname of the data directory to indicate where the
- locale data files and conversion mapping tables are when you are not using
- the shared library (e.g. by using the .dat archive or the individual data
- files). The trailing "/" is required after the directory name (e.g.
- "$Root/source/data/out/" will work, but the value "$Root/source/data/out" is
- not acceptable). You do not need to set <strong>ICU_DATA</strong> if the
- complete shared data library is in your library path.</p>
-
- <p><a name="HowToInstallICU" id="HowToInstallICU"><strong>Installing ICU
- NOTE:</strong></a> Some platforms use package management tools to control the
- installation and uninstallation of files on the system, as well as the
- integrity of the system configuration. You may want to check if ICU can be
- packaged for your package management tools by looking into the "packaging"
- directory. (Please note that if you are using a snapshot of ICU from Git, it
- is probable that the packaging scripts or related files are not up to date
- with the contents of ICU at this time, so use them with caution).</p>
-
- <h3><a name="HowToBuildZOS" href="#HowToBuildZOS" id="HowToBuildZOS">How To
- Build And Install On z/OS (OS/390)</a></h3>
-
- <p>You can install ICU on z/OS or OS/390 (the previous name of z/OS), but IBM
- tests only the z/OS installation. You install ICU in a z/OS UNIX system
- services file system such as HFS or zFS. On this platform, it is important
- that you understand a few details:</p>
-
- <ul>
- <li>The makedep and GNU make tools are required for building ICU. If it
- is not already installed on your system, it is available at the <a href=
- "http://www-03.ibm.com/servers/eserver/zseries/zos/unix/bpxa1toy.html">z/OS UNIX -
- Tools and Toys</a> site. The PATH environment variable should be updated to
- contain the location of this executable prior to build. Failure to add these
- tools to your PATH will cause ICU build failures or cause pkgdata to fail
- to run.</li>
-
- <li>Since USS does not support using the mmap() function over NFS, it is
- recommended that you build ICU on a local filesystem. Once ICU has been
- built, you should not have this problem while using ICU when the data
- library has been built as a shared library, which is this is the default
- setting.</li>
-
- <li>Encoding considerations: The source code assumes that it is compiled
- with codepage ibm-1047 (to be exact, the UNIX System Services variant of
- it). The pax command converts all of the source code files from ASCII to
- codepage ibm-1047 (USS) EBCDIC. However, some files are binary files and
- must not be converted, or must be converted back to their original state.
- You can use the <a href="as_is/os390/unpax-icu.sh">unpax-icu.sh</a> script
- to do this for you automatically. It will unpackage the tar file and
- convert all the necessary files for you automatically.</li>
-
- <li>z/OS supports both native S/390 hexadecimal floating point and (with
- OS/390 2.6 and later) IEEE 754 binary floating point. This is a compile
- time option. Applications built with IEEE should use ICU DLLs that are
- built with IEEE (and vice versa). The environment variable IEEE390=0 will
- cause the z/OS version of ICU to be built without IEEE floating point
- support and use the native hexadecimal floating point. By default ICU is
- built with IEEE 754 support. Native floating point support is sufficient
- for codepage conversion, resource bundle and UnicodeString operations, but
- the Format APIs require IEEE binary floating point.</li>
-
- <li>z/OS introduced the concept of Extra Performance Linkage (XPLINK) to
- bring performance improvement opportunities to call-intensive C and C++
- applications such as ICU. XPLINK is enabled on a DLL-by-DLL basis, so if
- you are considering using XPLINK in your application that uses ICU, you
- should consider building the XPLINK-enabled version of ICU. You need to
- set ICU's environment variable <code>OS390_XPLINK=1</code> prior to
- invoking the make process to produce binaries that are enabled for
- XPLINK. The XPLINK option, which is available for z/OS 1.2 and later,
- requires the PTF PQ69418 to build XPLINK enabled binaries.</li>
-
- <li>ICU requires XPLINK for the icuio library. If you want to use the
- rest of ICU without XPLINK, then you must use the --disable-icuio
- configure option.</li>
-
- <li>The latest versions of z/OS use <a
- href="https://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.cbcux01/oebind6.htm">XPLINK
- version (C128) of the C++ standard library</a> by default. You may see <a
- href="https://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.cbcux01/oebind5.htm">an
- error</a> when running with XPLINK disabled. To avoid this error,
- set the following environment variable or similar:
-
-<pre><samp>export _CXX_PSYSIX="CEE.SCEELIB(C128N)":"CBC.SCLBSID(IOSTREAM,COMPLEX)"</samp></pre>
- </li>
-
- <li>When building ICU data, the heap size may need to be increased with the following
- environment variable:
-
-<pre><samp>export _CEE_RUNOPTS="HEAPPOOLS(ON),HEAP(4M,1M,ANY,FREE,0K,4080)"</samp></pre>
- </li>
-
-
- <li>The rest of the instructions for building and testing ICU on z/OS with
- UNIX System Services are the same as the <a href="#HowToBuildUNIX">How To
- Build And Install On UNIX</a> section.</li>
- </ul>
-
- <h4>z/OS (Batch/PDS) support outside the UNIX system services
- environment</h4>
-
- <p>By default, ICU builds its libraries into the UNIX file system (HFS). In
- addition, there is a z/OS specific environment variable (OS390BATCH) to build
- some libraries into the z/OS native file system. This is useful, for example,
- when your application is externalized via Job Control Language (JCL).</p>
-
- <p>The OS390BATCH environment variable enables non-UNIX support including the
- batch environment. When OS390BATCH is set, the libicui18n<i>XX</i>.dll,
- libicuuc<i>XX</i>.dll, and libicudt<i>XX</i>e.dll binaries are built into
- data sets (the native file system). Turning on OS390BATCH does not turn off
- the normal z/OS UNIX build. This means that the z/OS UNIX (HFS) DLLs will
- always be created.</p>
-
- <p>Two additional environment variables indicate the names of the z/OS data
- sets to use. The LOADMOD environment variable identifies the name of the data
- set that contains the dynamic link libraries (DLLs) and the LOADEXP
- environment variable identifies the name of the data set that contains the
- side decks, which are normally the files with the .x suffix in the UNIX file
- system.</p>
-
- <p>A data set is roughly equivalent to a UNIX or Windows file. For most kinds
- of data sets the operating system maintains record boundaries. UNIX and
- Windows files are byte streams. Two kinds of data sets are PDS and PDSE. Each
- data set of these two types contains a directory. It is like a UNIX
- directory. Each "file" is called a "member". Each member name is limited to
- eight bytes, normally EBCDIC.</p>
-
- <p>Here is an example of some environment variables that you can set prior to
- building ICU:</p>
-<pre>
-<samp>OS390BATCH=1
-LOADMOD=<i>USER</i>.ICU.LOAD
-LOADEXP=<i>USER</i>.ICU.EXP</samp>
-</pre>
-
- <p>The PDS member names for the DLL file names are as follows:</p>
-<pre>
-<samp>IXMI<i>XX</i>IN --> libicui18n<i>XX</i>.dll
-IXMI<i>XX</i>UC --> libicuuc<i>XX</i>.dll
-IXMI<i>XX</i>DA --> libicudt<i>XX</i>e.dll</samp>
-</pre>
-
- <p>You should point the LOADMOD environment variable at a partitioned data
- set extended (PDSE) and point the LOADEXP environment variable at a
- partitioned data set (PDS). The PDSE can be allocated with the following
- attributes:</p>
-<pre>
-<samp>Data Set Name . . . : <i>USER</i>.ICU.LOAD
-Management class. . : <i>**None**</i>
-Storage class . . . : <i>BASE</i>
-Volume serial . . . : <i>TSO007</i>
-Device type . . . . : <i>3390</i>
-Data class. . . . . : <i>LOAD</i>
-Organization . . . : PO
-Record format . . . : U
-Record length . . . : 0
-Block size . . . . : <i>32760</i>
-1st extent cylinders: 1
-Secondary cylinders : 5
-Data set name type : LIBRARY</samp>
-</pre>
-
- <p>The PDS can be allocated with the following attributes:</p>
-<pre>
-<samp>Data Set Name . . . : <i>USER</i>.ICU.EXP
-Management class. . : <i>**None**</i>
-Storage class . . . : <i>BASE</i>
-Volume serial . . . : <i>TSO007</i>
-Device type . . . . : <i>3390</i>
-Data class. . . . . : <i>**None**</i>
-Organization . . . : PO
-Record format . . . : FB
-Record length . . . : 80
-Block size . . . . : <i>3200</i>
-1st extent cylinders: 3
-Secondary cylinders : 3
-Data set name type : PDS</samp>
-</pre>
-
- <h3><a name="HowToBuildOS400" href="#HowToBuildOS400" id=
- "HowToBuildOS400">How To Build And Install On The IBM i Family (IBM i, i5/OS OS/400)</a></h3>
-
- <p>Before you start building ICU, ICU requires the following:</p>
-
- <ul>
- <li>QSHELL interpreter installed (install base option 30, operating system)
- <!--li>QShell Utilities, PRPQ 5799-XEH (not required for V4R5)</li--></li>
-
- <li>ILE C/C++ Compiler installed on the system</li>
-
- <li>The latest IBM tools for Developers for IBM i —
- <a href='https://www-356.ibm.com/partnerworld/wps/servlet/ContentHandler/pw_com_porting_tools_index'>https://www-356.ibm.com/partnerworld/wps/servlet/ContentHandler/pw_com_porting_tools_index</a>
- <!-- formerly http://www.ibm.com/servers/enable/site/porting/tools/'>http://www.ibm.com/servers/enable/site/porting/tools/</a> -->
- <!-- formerly: http://www.ibm.com/servers/enable/site/porting/iseries/overview/gnu_utilities.html -->
- </li>
- </ul>
-
- <p>The following describes how to setup and build ICU. For background
- information, you should look at the <a href="#HowToBuildUNIX">UNIX build
- instructions</a>.</p>
-
- <ol>
- <li>
- Copy the ICU source .tgz to the IBM i environment, as binary.
- Also, copy the <a href='as_is/os400/unpax-icu.sh'>unpax-icu.sh</a> script into the same directory, as a text file.
- </li>
-
- <li>
- Create target library. This library will be the target for the
- resulting modules, programs and service programs. You will specify this
- library on the OUTPUTDIR environment variable.
-<pre>
-<samp>CRTLIB LIB(<i>libraryname</i>)
-ADDENVVAR ENVVAR(OUTPUTDIR) VALUE('<i>libraryname</i>') REPLACE(*YES) </samp></pre>
- </li>
-
- <li>
- Set up the following environment variables and job characteristics in your build process
-<pre>
-<samp>ADDENVVAR ENVVAR(MAKE) VALUE('gmake') REPLACE(*YES)
-CHGJOB CCSID(37)</samp></pre></li>
-
- <li>Fire up the QSH <i>(all subsequent commands are run inside the qsh session.)</i>
- <pre><samp>qsh</samp></pre>
- </li>
-
- <li>Set up the PATH: <pre><samp>export PATH=/QIBM/ProdData/DeveloperTools/qsh/bin:$PATH:/QOpenSys/usr/bin</samp></pre>
- </li>
-
- <li>Unpack the ICU source code archive:
- <pre><samp>gzip -d icu-<i>X</i>.<i>Y</i>.tgz</samp></pre>
- </li>
-
- <li>Run unpax-icu.sh on the tar file generated from the previous step.
- <pre><samp>unpax-icu.sh icu.tar</samp></pre></li>
-
- <li>Build the program ICULD which ICU will use for linkage.
- <pre><samp>cd icu/as_is/os400
-qsh bldiculd.sh
-cd ../../..</samp></pre>
- </li>
-
- <li>Change into the 'source' directory, and configure ICU. (See <a href="#HowToConfigureICU">configuration
- note</a> for details). Note that --with-data-packaging=archive and setting the --prefix are recommended, building in default (dll) mode is currently not supported.
- <pre><samp>cd icu/source
-./runConfigureICU IBMi --prefix=<i>/path/to/somewhere</i> --with-data-packaging=archive</samp></pre>
-</li>
-
- <li>Build ICU. <i>(Note: Do not use the -j option)</i> <pre><samp>gmake</samp></pre></li>
-
- <li>Test ICU. <pre><samp>gmake check</samp></pre>
- (The <tt> QIBM_MULTI_THREADED=Y</tt> flag will be automatically applied to intltest -
- you can look at the <a href=
- "https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/rzahw/rzahwceeco.htm">
- iSeries Information Center</a> for more details regarding the running of multiple threads
- on IBM i.)</li>
- </ol>
-
- <!-- cross -->
- <h3><a name="HowToCrossCompileICU" href="#HowToCrossCompileICU" id="HowToCrossCompileICU">How To Cross Compile ICU</a></h3>
- <p>This section will explain how to build ICU on one platform, but to produce binaries intended to run on another. This is commonly known as a cross compile.</p>
- <p>Normally, in the course of a build, ICU needs to run the tools that it builds in order to generate and package data and test-data.In a cross compilation setting, ICU is built on a different system from that which it eventually runs on. An example might be, if you are building for a small/headless system (such as an embedded device), or a system where you can't easily run the ICU command line tools (any non-UNIX-like system).</p>
- <p>To reduce confusion, we will here refer to the "A" and the "B" system.System "A" is the actual system we will be running on- the only requirements on it is are it is able to build ICU from the command line targetting itself (with configure or runConfigureICU), and secondly, that it also contain the correct toolchain for compiling and linking for the resultant platform, referred to as the "B" system.</p>
- <p>The autoconf docs use the term "build" for A, and "host" for B. More details at: <a href="http://www.gnu.org/software/autoconf/manual/html_node/Specifying-Names.html#Specifying-Names">http://www.gnu.org/software/autoconf/manual/html_node/Specifying-Names.html</a></p>
- <p>Three initially-empty directories will be used in this example:</p>
- <table summary="Three directories used in this example" class="docTable">
- <tr>
- <th align="left">/icu</th><td>a copy of the ICU source</td>
- </tr>
- <tr>
- <th align="left">/buildA</th><td>an empty directory, it will contain ICU built for A<br />(MacOSX in this case)</td>
- </tr>
- <tr>
- <th align="left">/buildB</th><td>an empty directory, it will contain ICU built for B<br />(HaikuOS in this case)</td>
- </tr>
- </table>
-
- <ol>
- <li>Check out or unpack the ICU source code into the /icu directory.You will have the directories /icu/source, etc.</li>
- <li>Build ICU in /buildA normally (using runConfigureICU or configure):
-<pre class="samp">cd /buildA
-sh /icu/source/runConfigureICU <strong>MacOSX</strong>
-gnumake
-</pre>
- </li>
- <li>Set PATH or other variables as needed, such as CPPFLAGS.</li>
- <li>Build ICU in /buildB<br />
- <p class="note">"<code>--with-cross-build</code>" takes an absolute path.</p>
-<pre class="samp">cd /buildB
-sh /icu/source/configure --host=<strong>i586-pc-haiku</strong> --with-cross-build=<strong>/buildA</strong>
-gnumake</pre>
- </li>
- <li>Tests and testdata can be built with "gnumake tests".</li>
- </ol>
- <!-- end cross -->
-
- <!-- end build environment -->
-
- <h2><a name="HowToPackage" href="#HowToPackage" id="HowToPackage">How To
- Package ICU</a></h2>
-
- <p>There are many ways that a person can package ICU with their software
- products. Usually only the libraries need to be considered for packaging.</p>
-
- <p>On UNIX, you should use "<tt>gmake install</tt>" to make it easier to
- develop and package ICU. The bin, lib and include directories are needed to
- develop applications that use ICU. These directories will be created relative
- to the "<tt>--prefix=</tt><i>dir</i>" configure option (See the <a href=
- "#HowToBuildUNIX">UNIX build instructions</a>). When ICU is built on Windows,
- a similar directory structure is built.</p>
-
- <p>When changes have been made to the standard ICU distribution, it is
- recommended that at least one of the following guidelines be followed for
- special packaging.</p>
-
- <ol>
- <li>Add a suffix name to the library names. This can be done with the
- --with-library-suffix configure option.</li>
-
- <li>The installation script should install the ICU libraries into the
- application's directory.</li>
- </ol>
-
- <p>Following these guidelines prevents other applications that use a standard
- ICU distribution from conflicting with any libraries that you need. On
- operating systems that do not have a standard C++ ABI (name mangling) for
- compilers, it is recommended to do this special packaging anyway. More
- details on customizing ICU are available in the <a href=
- "https://unicode-org.github.io/icu/userguide/">User's Guide</a>. The <a href=
- "#SourceCode">ICU Source Code Organization</a> section of this readme.html
- gives a more complete description of the libraries.</p>
-
- <table class="docTable" summary=
- "ICU has several libraries for you to use.">
- <caption>
- Here is an example of libraries that are frequently packaged.
- </caption>
-
- <tr>
- <th scope="col">Library Name</th>
-
- <th scope="col">Windows Filename</th>
-
- <th scope="col">Linux Filename</th>
-
- <th scope="col">Comment</th>
- </tr>
-
- <tr>
- <td>Data Library</td>
-
- <td>icudt<i>XY</i>l.dll</td>
-
- <td>libicudata.so.<i>XY</i>.<i>Z</i></td>
-
- <td>Data required by the Common and I18n libraries. There are many ways
- to package and <a href=
- "https://unicode-org.github.io/icu/userguide/icudata">customize this
- data</a>, but by default this is all you need.</td>
- </tr>
-
- <tr>
- <td>Common Library</td>
-
- <td>icuuc<i>XY</i>.dll</td>
-
- <td>libicuuc.so.<i>XY</i>.<i>Z</i></td>
-
- <td>Base library required by all other ICU libraries.</td>
- </tr>
-
- <tr>
- <td>Internationalization (i18n) Library</td>
-
- <td>icuin<i>XY</i>.dll</td>
-
- <td>libicui18n.so.<i>XY</i>.<i>Z</i></td>
-
- <td>A library that contains many locale based internationalization (i18n)
- functions.</td>
- </tr>
-
- <tr>
- <td>Layout Extensions Engine</td>
-
- <td>iculx<i>XY</i>.dll</td>
-
- <td>libiculx.so.<i>XY</i>.<i>Z</i></td>
-
- <td>An optional engine for doing paragraph layout that uses
- parts of ICU.
- HarfBuzz is required.</td>
- </tr>
-
- <tr>
- <td>ICU I/O (Unicode stdio) Library</td>
-
- <td>icuio<i>XY</i>.dll</td>
-
- <td>libicuio.so.<i>XY</i>.<i>Z</i></td>
-
- <td>An optional library that provides a stdio like API with Unicode
- support.</td>
- </tr>
-
- <tr>
- <td>Tool Utility Library</td>
-
- <td>icutu<i>XY</i>.dll</td>
-
- <td>libicutu.so.<i>XY</i>.<i>Z</i></td>
-
- <td>An internal library that contains internal APIs that are only used by
- ICU's tools. If you do not use ICU's tools, you do not need this
- library.</td>
- </tr>
- </table>
-
- <p>Normally only the above ICU libraries need to be considered for packaging.
- The versionless symbolic links to these libraries are only needed for easier
- development. The <i>X</i>, <i>Y</i> and <i>Z</i> parts of the name are the
- version numbers of ICU. For example, ICU 2.0.2 would have the name
- libicuuc.so.20.2 for the common library. The exact format of the library
- names can vary between platforms due to how each platform can handles library
- versioning.</p>
-
- <h2><a name="ImportantNotes" href="#ImportantNotes" id=
- "ImportantNotes">Important Notes About Using ICU</a></h2>
-
- <h3><a name="ImportantNotesMultithreaded" href="#ImportantNotesMultithreaded"
- id="ImportantNotesMultithreaded">Using ICU in a Multithreaded
- Environment</a></h3>
-
- <p>Some versions of ICU require calling the <code>u_init()</code> function
- from <code>uclean.h</code> to ensure that ICU is initialized properly. In
- those ICU versions, <code>u_init()</code> must be called before ICU is used
- from multiple threads. There is no harm in calling <code>u_init()</code> in a
- single-threaded application, on a single-CPU machine, or in other cases where
- <code>u_init()</code> is not required.</p>
-
- <p>In addition to ensuring thread safety, <code>u_init()</code> also attempts
- to load at least one ICU data file. Assuming that all data files are packaged
- together (or are in the same folder in files mode), a failure code from
- <code>u_init()</code> usually means that the data cannot be found. In this
- case, the data may not be installed properly, or the application may have
- failed to call <code>udata_setCommonData()</code> or
- <code>u_setDataDirectory()</code> which specify to ICU where it can find its
- data.</p>
-
- <p>Since <code>u_init()</code> will load only one or two data files, it
- cannot guarantee that all of the data that an application needs is available.
- It cannot check for all data files because the set of files is customizable,
- and some ICU services work without loading any data at all. An application
- should always check for error codes when opening ICU service objects (using
- <code>ucnv_open()</code>, <code>ucol_open()</code>, C++ constructors,
- etc.).</p>
-
- <h4>ICU 3.4 and later</h4>
-
- <p>ICU 3.4 self-initializes properly for multi-threaded use. It achieves this
- without performance penalty by hardcoding the core Unicode properties data,
- at the cost of some flexibility. (For details see Jitterbug 4497.)</p>
-
- <p><code>u_init()</code> can be used to check for data loading. It tries to
- load the converter alias table (<code>cnvalias.icu</code>).</p>
-
- <h4>ICU 2.6..3.2</h4>
-
- <p>These ICU versions require a call to <code>u_init()</code> before
- multi-threaded use. The services that are directly affected are those that
- don't have a service object and need to be fast: normalization and character
- properties.</p>
-
- <p><code>u_init()</code> loads and initializes the data files for
- normalization and character properties (<code>unorm.icu</code> and
- <code>uprops.icu</code>) and can therefore also be used to check for data
- loading.</p>
-
- <h4>ICU 2.4 and earlier</h4>
-
- <p>ICU 2.4 and earlier versions were not prepared for multithreaded use on
- multi-CPU platforms where the CPUs implement weak memory coherency. These
- CPUs include: Power4, Power5, Alpha, Itanium. <code>u_init()</code> was not
- defined yet.</p>
-
- <h4><a name="ImportantNotesHPUX" href="#ImportantNotesHPUX" id=
- "ImportantNotesHPUX">Using ICU in a Multithreaded Environment on
- HP-UX</a></h4>
-
- <p>When ICU is built with aCC on HP-UX, the <a
- href="http://h21007.www2.hp.com/portal/site/dspp/menuitem.863c3e4cbcdc3f3515b49c108973a801?ciid=eb08b3f1eee02110b3f1eee02110275d6e10RCRD">-AA</a>
- compiler flag is used. It is required in order to use the latest
- <iostream> API in a thread safe manner. This compiler flag affects the
- version of the C++ library being used. Your applications will also need to
- be compiled with -AA in order to use ICU.</p>
-
- <h4><a name="ImportantNotesSolaris" href="#ImportantNotesSolaris" id=
- "ImportantNotesSolaris">Using ICU in a Multithreaded Environment on
- Solaris</a></h4>
-
- <h5>Linking on Solaris</h5>
-
- <p>In order to avoid synchronization and threading issues, developers are
- <strong>suggested</strong> to strictly follow the compiling and linking
- guidelines for multithreaded applications, specified in the following
- SUn Solaris document available from Oracle. Most notably, pay strict attention to the
- following statements from Sun:</p>
-
- <blockquote>
- <p>To use libthread, specify -lthread before -lc on the ld command line, or
- last on the cc command line.</p>
-
- <p>To use libpthread, specify -lpthread before -lc on the ld command line,
- or last on the cc command line.</p>
- </blockquote>
-
- <p>Failure to do this may cause spurious lock conflicts, recursive mutex
- failure, and deadlock.</p>
-
- <p>Source: "<i>Multithreaded Programming Guide, Compiling and
- Debugging</i>", Sun Microsystems, 2002 <br />
- <a href=
- "https://docs.oracle.com/cd/E19683-01/806-6867/compile-74765/index.html">https://docs.oracle.com/cd/E19683-01/806-6867/compile-74765/index.html</a></p>
-
- <p>Note, a version of that chapter from a 2008 document update covering both Solaris 9
- and Solaris 10 is available here:<br />
- <a href=
- "http://docs.oracle.com/cd/E19253-01/816-5137/compile-94179/index.html">http://docs.oracle.com/cd/E19253-01/816-5137/compile-94179/index.html</a></p>
-
- <h3><a name="ImportantNotesWindows" href="#ImportantNotesWindows" id=
- "ImportantNotesWindows">Windows Platform</a></h3>
-
- <p>If you are building on the Windows platform, it is important that you
- understand a few of the following build details.</p>
-
- <h4>DLL directories and the PATH setting</h4>
-
- <p>As delivered, the International Components for Unicode build as several
- DLLs, which are placed in the "<i><ICU></i>\bin64" directory. You must
- add this directory to the PATH environment variable in your system, or any
- executables you build will not be able to access International Components for
- Unicode libraries. Alternatively, you can copy the DLL files into a directory
- already in your PATH, but we do not recommend this. You can wind up with
- multiple copies of the DLL and wind up using the wrong one.</p>
-
- <h4><a name="ImportantNotesWindowsPath" id=
- "ImportantNotesWindowsPath">Changing your PATH</a></h4>
-
- <p><strong>Windows 2000/XP and above</strong>: Use the System Icon in the Control
- Panel. Pick the "Advanced" tab. Select the "Environment Variables..."
- button. Select the variable PATH in the lower box, and select the lower
- "Edit..." button. In the "Variable Value" box, append the string
- ";<i><ICU></i>\bin64" to the end of the path string. If there is
- nothing there, just type in "<i><ICU></i>\bin64". Click the Set button,
- then the OK button.</p>
-
- <p>Note: When packaging a Windows application for distribution and
- installation on user systems, copies of the ICU DLLs should be included with
- the application, and installed for exclusive use by the application. This is
- the only way to insure that your application is running with the same version
- of ICU, built with exactly the same options, that you developed and tested
- with. Refer to Microsoft's guidelines on the usage of DLLs, or search for the
- phrase "DLL hell" on <a href=
- "http://msdn.microsoft.com/">msdn.microsoft.com</a>.</p>
-
- <h3><a name="ImportantNotesUNIX" href="#ImportantNotesUNIX" id=
- "ImportantNotesUNIX">UNIX Type Platform</a></h3>
-
- <p>If you are building on a UNIX platform, and if you are installing ICU in a
- non-standard location, you may need to add the location of your ICU libraries
- to your <strong>LD_LIBRARY_PATH</strong> or <strong>LIBPATH</strong>
- environment variable (or the equivalent runtime library path environment
- variable for your system). The ICU libraries may not link or load properly
- without doing this.</p>
-
- <p>Note that if you do not want to have to set this variable, you may instead
- use the --enable-rpath option at configuration time. This option will
- instruct the linker to always look for the libraries where they are
- installed. You will need to use the appropriate linker options when linking
- your own applications and libraries against ICU, too. Please refer to your
- system's linker manual for information about runtime paths. The use of rpath
- also means that when building a new version of ICU you should not have an
- older version installed in the same place as the new version's installation
- directory, as the older libraries will used during the build, instead of the
- new ones, likely leading to an incorrectly build ICU. This is the proper
- behavior of rpath.</p>
-
- <h2><a name="PlatformDependencies" href="#PlatformDependencies" id=
- "PlatformDependencies">Platform Dependencies</a></h2>
-
- <h3><a name="PlatformDependenciesNew" href="#PlatformDependenciesNew" id=
- "PlatformDependenciesNew">Porting To A New Platform</a></h3>
-
- <p>If you are using ICU's Makefiles to build ICU on a new platform, there are
- a few places where you will need to add or modify some files. If you need
- more help, you can always ask the <a href=
- "http://site.icu-project.org/contacts">icu-support mailing list</a>. Once
- you have finished porting ICU to a new platform, it is recommended that you
- contribute your changes back to ICU via the icu-support mailing list. This
- will make it easier for everyone to benefit from your work.</p>
-
- <h4>Data For a New Platform</h4>
-
- <p>For some people, it may not be necessary for completely build ICU. Most of
- the makefiles and build targets are for tools that are used for building
- ICU's data, and an application's data (when an application uses ICU resource
- bundles for its data).</p>
-
- <p>Data files can be built on a different platform when both platforms share
- the same endianness and the same charset family. This assertion does not
- include platform dependent DLLs/shared/static libraries. For details see the
- User Guide <a href="https://unicode-org.github.io/icu/userguide/icudata">ICU
- Data</a> chapter.</p>
-
- <p>ICU 3.6 removes the requirement that ICU be completely built in the native
- operating environment. It adds the icupkg tool which can be run on any
- platform to turn binary ICU data files from any one of the three formats into
- any one of the other data formats. This allows a application to use ICU data
- built anywhere to be used for any other target platform.</p>
-
- <p><strong>WARNING!</strong> Building ICU without running the tests is not
- recommended. The tests verify that ICU is safe to use. It is recommended that
- you try to completely port and test ICU before using the libraries for your
- own application.</p>
-
- <h4>Adapting Makefiles For a New Platform</h4>
-
- <p>Try to follow the build steps from the <a href="#HowToBuildUNIX">UNIX</a>
- build instructions. If the configure script fails, then you will need to
- modify some files. Here are the usual steps for porting to a new
- platform:<br />
- </p>
-
- <ol>
- <li>Create an mh file in icu/source/config/. You can use mh-linux or a
- similar mh file as your base configuration.</li>
-
- <li>Modify icu/source/aclocal.m4 to recognize your platform's mh file.</li>
-
- <li>Modify icu/source/configure.in to properly set your <b>platform</b> C
- Macro define.</li>
-
- <li>Run <a href="http://www.gnu.org/software/autoconf/">autoconf</a> in
- icu/source/ without any options. The autoconf tool is standard on most
- Linux systems.</li>
-
- <li>If you have any optimization options that you want to normally use, you
- can modify icu/source/runConfigureICU to specify those options for your
- platform.</li>
-
- <li>Build and test ICU on your platform. It is very important that you run
- the tests. If you don't run the tests, there is no guarentee that you have
- properly ported ICU.</li>
- </ol>
-
- <h3><a name="PlatformDependenciesImpl" href="#PlatformDependenciesImpl" id=
- "PlatformDependenciesImpl">Platform Dependent Implementations</a></h3>
-
- <p>The platform dependencies have been mostly isolated into the following
- files in the common library. This information can be useful if you are
- porting ICU to a new platform.</p>
-
- <ul>
- <li>
- <strong>unicode/platform.h.in</strong> (autoconf'ed platforms)<br />
- <strong>unicode/p<i>XXXX</i>.h</strong> (others: pwin32.h, ppalmos.h,
- ..): Platform-dependent typedefs and defines:<br />
- <br />
-
-
- <ul>
- <li>Generic types like UBool, int8_t, int16_t, int32_t, int64_t,
- uint64_t etc.</li>
-
- <li>U_EXPORT and U_IMPORT for specifying dynamic library import and
- export</li>
-
- <li>String handling support for the char16_t and wchar_t types.</li>
- </ul>
- <br />
- </li>
-
- <li>
- <strong>unicode/putil.h, putil.c</strong>: platform-dependent
- implementations of various functions that are platform dependent:<br />
- <br />
-
-
- <ul>
- <li>uprv_isNaN, uprv_isInfinite, uprv_getNaN and uprv_getInfinity for
- handling special floating point values.</li>
-
- <li>uprv_tzset, uprv_timezone, uprv_tzname and time for getting
- platform specific time and time zone information.</li>
-
- <li>u_getDataDirectory for getting the default data directory.</li>
-
- <li>uprv_getDefaultLocaleID for getting the default locale
- setting.</li>
-
- <li>uprv_getDefaultCodepage for getting the default codepage
- encoding.</li>
- </ul>
- <br />
- </li>
-
- <li>
- <strong>umutex.h, umutex.c</strong>: Code for doing synchronization in
- multithreaded applications. If you wish to use International Components
- for Unicode in a multithreaded application, you must provide a
- synchronization primitive that the classes can use to protect their
- global data against simultaneous modifications. We already supply working
- implementations for many platforms that ICU builds on.<br />
- <br />
- </li>
-
- <li><strong>umapfile.h, umapfile.c</strong>: functions for mapping or
- otherwise reading or loading files into memory. All access by ICU to data
- from files makes use of these functions.<br />
- <br />
- </li>
-
- <li>Using platform specific #ifdef macros are highly discouraged outside of
- the scope of these files. When the source code gets updated in the future,
- these #ifdef's can cause testing problems for your platform.</li>
- </ul>
+ <body>
+ <p>This readme has moved to the <a href="https://unicode-org.github.io/icu/userguide/icu/icu4c-readme/">ICU4C Readme</a>
+ section in the <a href="https://unicode-org.github.io/icu/">ICU User Guide</a>.</p>
<hr />
<p> Copyright © 2016 and later: Unicode, Inc. and others. License & terms of use:
<a href="http://www.unicode.org/copyright.html">http://www.unicode.org/copyright.html</a><br/>
</head>
<body style="background-color: rgb(255, 255, 255);" lang="EN-US"
link="#0000ff" vlink="#800080">
-<h1>International Components for Unicode for Java (ICU4J)</h1>
-<h2>Read Me for ICU4J 69.1</h2>
-(Last Update: 2021-Mar-16)
-<hr size="2" width="100%">
-<p>
-<!-- <b>Note:</b> This is a major release of ICU4J. It contains bug fixes and adds implementations
-of inherited API and introduces new API or functionality. -->
-<!-- <b>Note:</b> This is a preview release of ICU4J 69.
-The contents of this document may not reflect the recent changes done
-for ICU 69 development. It is not recommended for production use. -->
-<!-- <b>Note:</b> This is a development milestone of ICU4J 69.
-The contents of this document may not reflect the recent changes done
-for ICU 69 development. It is not recommended for production use. -->
-<b>Note:</b> This is a release candidate of ICU4J 69.
-The contents of this document may not reflect the recent changes done
-for ICU 69 development. This release candidate is intended for those
-wishing to verify ICU 69 integration before final release. It is not
-recommended for production use.
-</p>
-<p>For the most recent release, see the <a
- href="http://www.icu-project.org/download/"> ICU4J
-download site</a>. </p>
-<h2 class="doc">Contents</h2>
-<ul type="disc">
- <li><a href="#introduction">Introduction to ICU4J</a></li>
- <li><a href="#changes">Changes In This Release</a></li>
- <li><a href="#license">License Information</a></li>
- <li><a href="#PlatformDependencies">Platform Dependencies</a></li>
- <li><a href="#download">How to Download ICU4J</a></li>
- <li><a href="#WhatContain">The Structure and Contents of ICU4J</a></li>
- <li><a href="#API">Where to Get Documentation</a></li>
- <li><a href="#HowToInstallJavac">How to Install and Build</a></li>
- <li><a href="#HowToModularize">How to modularize ICU4J</a></li>
- <li><a href="#tryingout">Trying Out ICU4J</a></li>
- <li><a href="#resources">ICU4J Resource Information</a></li>
- <li><a href="#timezone">About ICU4J Time Zone</a></li>
- <li><a href="#WhereToFindMore">Where to Find More Information</a></li>
- <li><a href="#SubmittingComments">Submitting Comments, Requesting
-Features and Reporting Bugs</a></li>
-</ul>
-<h2 class="doc"><a name="introduction"></a>Introduction to ICU4J</h2>
-<p>The International Components for Unicode (ICU) library provides
-robust and
-full-featured Unicode services on a wide variety of platforms. ICU
-supports the
-most current version of the Unicode standard, including support for
-supplementary characters (needed for GB 18030 repertoire support).</p>
-<p>Java provides a strong foundation for global programs, and IBM and
-the
-ICU team played a key role in providing globalization technology to
-Java. But because of its long release schedule, Java cannot always keep
-up with evolving standards. The ICU team continues to extend Java's
-Unicode and internationalization support, focusing on improving
-performance,
-keeping current with the Unicode standard, and providing richer APIs,
-while
-remaining as compatible as possible with the original Java text and
-internationalization API design.</p>
-<p>ICU4J is an add-on to the regular JRE that provides:
-</p>
-<ul>
- <li><a
- href="https://unicode-org.github.io/icu/userguide/collation"><b>Collation</b></a>
-– rule-based, up-to-date Unicode Collation Algorithm (UCA) sorting order<br>
- For fast multilingual string comparison; faster
-and more complete than
-the J2SE implementation</li>
- <li><a href="https://unicode-org.github.io/icu/userguide/conversion/detection"><b>Charset
-Detection</b></a> – Recognition of various single and multibyte charsets<br>
- Useful for recognizing untagged text data</li>
- <li><a
- href="https://unicode-org.github.io/icu/userguide/strings/unicodeset"><b>UnicodeSet</b></a>
-– standard set operations optimized for sets of Unicode characters<br>
- UnicodeSets can be built from string patterns
-using any Unicode properties.</li>
- <li><a href="https://unicode-org.github.io/icu/userguide/transforms"><b>Transforms</b></a>
-– a flexible mechanism for Unicode text conversions<br>
- Including Full/Halfwidth conversions,
-Normalization, Case conversions, Hex
-conversions, and transliterations between scripts (50+ pairs)</li>
- <li><a
- href="https://unicode-org.github.io/icu/userguide/transforms/normalization"><b>Unicode
-Normalization</b></a> – NFC, NFD, NFKD, NFKC<br>
- For canonical text representations, needed for
-XML and the net</li>
- <li><a
- href="https://unicode-org.github.io/icu/userguide/datetime/calendar"><b>International
-Calendars</b></a> – Arabic, Buddhist, Chinese, Hebrew, Japanese, Ethiopic, Islamic, Coptic and other calendars<br>
- Required for correct presentation of dates in
-certain countries</li>
- <li><a
- href="https://unicode-org.github.io/icu/userguide/format_parse/datetime"><b>Date
-Format
-Enhancements</b></a> – Date/time pattern generator, Relative date formatting, etc.<br>
- Enhancements to the normal Java date
-formatting.</li>
- <li><a
- href="https://unicode-org.github.io/icu/userguide/format_parse/numbers"><b>Number
-Format
-Enhancements</b></a> – Scientific Notation, Spelled-out, Compact decimal format, etc.<br>
- Enhancements to the normal Java number
-formatting. The spell-out format is
-used for checks and similar documents</li>
- <li><a
- href="https://unicode-org.github.io/icu/userguide/boundaryanalysis"><b>Enhanced
-Word-Break Detection</b></a> – Rule-based, supports Thai, Khmer, Chinese, etc.<br>
- Required for correct support of Thai</li>
- <li><a
- href="https://unicode-org.github.io/icu/userguide/conversion/compression"><b>Unicode
-Text
-Compression</b></a> – Standard compression of Unicode text<br>
- Suitable for large numbers of small fields,
-where LZW and similar schemes
-do not apply</li>
- <li><a
- href="https://unicode-org.github.io/icu/userguide/conversion"><b>Charset Conversion</b></a> – Conversion to and from different charsets.<br>
- Plugs into Java CharsetProvider Service Provider Interface (SPI)</li>
+ <p>This readme has moved to the <a href="https://unicode-org.github.io/icu/userguide/icu/icu4j-readme/">ICU4J Readme</a>
+ section in the <a href="https://unicode-org.github.io/icu/">ICU User Guide</a>.</p>
-</ul>
-<blockquote>
- <p><b>Note:</b> We continue to provide assistance to Java, and in some
-cases, ICU4J support has been rolled into a later release of Java. For
-example, BCP47 language tag support including Unicode locale extensions
-is now in Java 7. However, the most current and complete version is always
-found in ICU4J.</p>
-</blockquote>
+ <hr />
+ <p> Copyright © 2016 and later: Unicode, Inc. and others. License & terms of use:
+ <a href="http://www.unicode.org/copyright.html">http://www.unicode.org/copyright.html</a><br/>
+ Copyright © 1997-2016 International Business Machines Corporation and others.
+ All Rights Reserved.</p>
-<h2 class="doc"><a name="changes"></a>Changes In This Release</h2>
-
-<p>See the <a href="http://site.icu-project.org/download/69">ICU 69 download page</a>
-for more informantion about changes in this release.</p>
-<p>The list of API changes since the previous ICU4J release is available
-<a href="APIChangeReport.html">here</a>.</p>
-
-<h2 class="doc"><a name="license"></a>License Information</h2>
-<p>
-The ICU projects (ICU4C and ICU4J) are hosted by the
-<a href="http://www.unicode.org/">Unicode Consortium</a>. The ICU binary
-and source files are distributed under the
-<a href="http://www.unicode.org/copyright.html">UNICODE DATA FILES
-AND SOFTWARE LICENSE</a>. The full copy of the license and third party
-software licenses are available in <a href="./main/shared/licenses/LICENSE">LICENSE</a>
-file included in this package.
-</p>
-<h2 class="doc"><a name="PlatformDependencies"></a>Platform Dependencies</h2>
-<p>
-The minimum Java runtime version supported by ICU4J 69 is version 7. Java runtime version 6 is not supported.
-</p>
-<p>
-ICU4J since version 63 depend on J2SE 7 functionality. Therefore, ICU4J only runs on
-JRE version 7 or later. ICU4J 69 is tested on JRE 7, 8, 9, 10 and 11.
-</p>
-
-<h2 class="doc"><a name="download"></a>How to Download ICU4J</h2>
-<p>There are a few different ways to download the ICU4J releases.
-</p>
-<ul type="disc">
- <li><b>Official Release:</b><br>
-If you want to use ICU4J (as opposed to developing it), your best bet
-is to download an official, packaged version of the ICU4J library files.
-These versions are tested more thoroughly than day-to-day development
-builds, and they are packaged in jar files for convenient download.
- <ul>
- <li><a href="http://www.icu-project.org/download/">ICU Download page</a>.</li>
- <li>Maven repository:
-<pre>
-<dependency>
- <groupId>com.ibm.icu</groupId>
- <artifactId>icu4j</artifactId>
- <version>69.1</version>
-</dependency>
-
-<dependency>
- <groupId>com.ibm.icu</groupId>
- <artifactId>icu4j-charset</artifactId>
- <version>69.1</version>
-</dependency>
-
-<dependency>
- <groupId>com.ibm.icu</groupId>
- <artifactId>icu4j-localespi</artifactId>
- <version>69.1</version>
-</dependency>
-</pre>
- </ul>
-</ul>
-<ul type="disc">
- <li><b>GitHub Source Repository:</b><br>
-If you are interested in developing features, patches, or bug fixes for
-ICU4J, you should probably be working with the latest version of the
-ICU4J source code. You will need to clone and checkout the code from our GitHub
-repository to ensure that you have the most recent version of all of
-the files. There are several ways to do this. Please follow the
-directions that are contained on the <a
- href="http://www.icu-project.org/repository/">Source
- Repository page</a> for details.
- </li>
-</ul>
-<p>For more details on how to download ICU4J directly from the web
-site, please see the ICU download page at <a
- href="http://www.icu-project.org/download/">http://www.icu-project.org/download/</a>
-</p>
-<h2 class="doc"><a name="WhatContain"></a>The Structure and Contents of
-ICU4J</h2>
-<p>Below, all directory pathes are relative to the directory where the
-ICU4J source archive is extracted.
-</p>
-<p><b>Information and build files:</b></p>
-<table border="1">
-<tr>
- <th>Path</th>
- <th>Description</th>
-</tr>
-<tr>
- <td>readme.html</td>
- <td>A description of ICU4J (International Components for Unicode for Java)</td>
-</tr>
-<tr>
- <td>build.html</td>
- <td>The main Ant build file for ICU4J. See <a href="#HowToInstallJavac">How to Install
- and Build</a> for more information</td>
-</tr>
-<tr>
- <td>main/shared/licenses/LICENSE</td>
- <td>ICU license</td>
-</tr>
-</table>
-
-<p><b>ICU4J runtime class files:</b></p>
-<table border="1">
-<tr>
- <th>Path</th>
- <th>Sub-component Name</th>
- <th>Build Dependencies</th>
- <th>Public API Packages</th>
- <th>Description</th>
-</tr>
-<tr>
- <td>main/classes/charset</td>
- <td>icu4j-charset</td>
- <td>icu4j-core</td>
- <td>com.ibm.icu.charset</td>
- <td>Implementation of <code>java.nio.charset.spi.CharsetProvider</code>.
- This sub-component is shipped as icu4j-charset.jar along with
- ICU charset converter data files.</td>
-</tr>
-<tr>
- <td>main/classes/collate</td>
- <td>icu4j-collate</td>
- <td>icu4j-core</td>
- <td>com.ibm.icu.text<br>
- com.ibm.icu.util</td>
- <td>Collator APIs and implementation. Also includes some public API classes
- that depend on Collator.
- This sub-component is packaged as a part of icu4j.jar.</td>
-</tr>
-<tr>
- <td>main/classes/core</td>
- <td>icu4j-core</td>
- <td>n/a</td>
- <td>com.ibm.icu.lang<br>
- com.ibm.icu.math<br>
- com.ibm.icu.text<br>
- com.ibm.icu.util</td>
- <td>ICU core API classes and implementation.
- This sub-component is packaged as a part of icu4j.jar.</td>
-</tr>
-<tr>
- <td>main/classes/currdata</td>
- <td>icu4j-currdata</td>
- <td>icu4j-core</td>
- <td>n/a</td>
- <td>No public API classes. Provides access to currency display data.
- This sub-component is packaged as a part of icu4j.jar.</td>
-</tr>
-<tr>
- <td>main/classes/langdata</td>
- <td>icu4j-langdata</td>
- <td>icu4j-core</td>
- <td>n/a</td>
- <td>No public API classes. Provides access to language display data.
- This sub-component is packaged as a part of icu4j.jar.</td>
-</tr>
-<tr>
- <td>main/classes/localespi</td>
- <td>icu4j-localespi</td>
- <td>icu4j-core<br>
- icu4j-collate<br>
- </td>
- <td>n/a</td>
- <td>Implementation of various locale-sensitive service providers defined
- in <code>java.text.spi</code> and <code>java.util.spi</code> in J2SE 6.0
- or later Java releases.
- This sub-component is shipped as icu4j-localespi.jar.</td>
-</tr>
-<tr>
- <td>main/classes/regiondata</td>
- <td>icu4j-regiondata</td>
- <td>icu4j-core</td>
- <td>n/a</td>
- <td>No public API classes. Provides access to region display data.
- This sub-component is packaged as a part of icu4j.jar.</td>
-</tr>
-<tr>
- <td>main/classes/translit</td>
- <td>icu4j-translit</td>
- <td>icu4j-core</td>
- <td>com.ibm.icu.text</td>
- <td>Transliterator APIs and implementation.
- This sub-component is packaged as a part of icu4j.jar.</td>
-</tr>
-</table>
-
-<p><b>ICU4J unit test files:</b></p>
-<table border="1">
-<tr>
- <th>Path</th>
- <th>Sub-component Name</th>
- <th>Runtime Dependencies</th>
- <th>Description</th>
-</tr>
-<tr>
- <td>main/tests/charset</td>
- <td>icu4j-charset-tests</td>
- <td>icu4j-charset<br>
- icu4j-core<br>
- icu4j-test-framework</td>
- <td>Test suite for charset sub-component.</td>
-</tr>
-<tr>
- <td>main/tests/collate</td>
- <td>icu4j-collate-tests</td>
- <td>icu4j-collate<br>
- icu4j-core<br>
- icu4j-test-framework</td>
- <td>Test suite for collate sub-component.</td>
-</tr>
-<tr>
- <td>main/tests/core</td>
- <td>icu4j-core-tests</td>
- <td>icu4j-core<br>
- icu4j-currdata<br>
- icu4j-langdata<br>
- icu4j-regiondata<br>
- icu4j-test-framework</td>
- <td>Test suite for core sub-component.</td>
-</tr>
-<tr>
- <td>main/tests/framework</td>
- <td>icu4j-test-framework</td>
- <td>icu4j-core</td>
- <td>Common ICU4J unit test framework and utilities.</td>
-</tr>
-<tr>
- <td>main/tests/localespi</td>
- <td>icu4j-localespi-tests</td>
- <td>icu4j-core<br>
- icu4j-collate<br>
- icu4j-currdata<br>
- icu4j-langdata<br>
- icu4j-localespi<br>
- icu4j-regiondata<br>
- icu4j-test-framework</td>
- <td>Test suite for localespi sub-component.</td>
-</tr>
-<tr>
- <td>main/tests/packaging</td>
- <td>icu4j-packaging-tests</td>
- <td>icu4j-core<br>
- icu4j-test-framework</td>
- <td>Test suite for sub-component packaging.</td>
-</tr>
-<tr>
- <td>main/tests/translit</td>
- <td>icu4j-translit-tests</td>
- <td>icu4j-core<br>
- icu4j-translit
- icu4j-test-framework</td>
- <td>Test suite for translit sub-component.</td>
-</tr>
-</table>
-
-<p><b>Others:</b></p>
-<table border="1">
-<tr>
- <th>Path</th>
- <th>Description</th>
-</tr>
-<tr>
- <td>main/shared</td>
- <td>Files shared by ICU4J sub-components under the <code>main</code> directory including:
- <ul>
- <li>ICU4J runtime data archive (icudata.jar).</li>
- <li>ICU4J unit test data archive (testdata.jar).</li>
- <li>Shared Ant build script and configuration files.</li>
- <li>License files.</li>
- </ul>
- </td>
-</tr>
-<tr>
- <td>demos</td>
- <td>ICU4J demo programs.</td>
-</tr>
-<tr>
- <td>perf-tests</td>
- <td>ICU4J performance test files.</td>
-</tr>
-<tr>
- <td>tools</td>
- <td>ICU4J tools including:
- <ul>
- <li>Custom JavaDoc taglets used for generating ICU4J API references.</li>
- <li>API report tool and data.</li>
- <li>Other independent utilities used for ICU4J development.</li>
- </ul>
- </td>
-</tr>
-<tr>
- <td>lib</td>
- <td>Folder used for downloading depedency libraries.<br>
- <b>Note:</b> ICU4J runtime libraries do not depend on any external libraries other
- than JDK. These dependencies are for testing (such as JUnit).</td>
-</tr>
-</table>
-
-<h2 class="doc"><a name="API"></a>Where to get Documentation</h2>
-<p>The <a href="https://unicode-org.github.io/icu/userguide/">ICU user's
-guide</a> contains lots of general information about ICU, in its C,
-C++, and Java incarnations.</p>
-<p>The complete API documentation for ICU4J (javadoc) is available on
-the ICU4J web site, and can be built from the sources:
-</p>
-<ul>
- <li><a href="http://www.icu-project.org/apiref/icu4j/">Index
-to all ICU4J API</a></li>
- <li><a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/CharsetDetector.html">Charset Detector</a> – Detection of charset from a byte stream</li>
- <li>International Calendars –
- <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/BuddhistCalendar.html">Buddhist</a>,
- <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/ChineseCalendar.html">Chinese</a>,
- <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/CopticCalendar.html">Coptic</a>,
- <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/EthiopicCalendar.html">Ethiopic</a>,
- <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/GregorianCalendar.html">Gregorian</a>,
- <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/HebrewCalendar.html">Hebrew</a>,
- <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/IndianCalendar.html">Indian</a>,
- <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/IslamicCalendar.html">Islamic</a>,
- <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/JapaneseCalendar.html">Japanese</a>,
- Persian, Dangi.</li>
- <li>Time Zone Enhancements –
-<a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/BasicTimeZone.html">Time zone transition and rule detection</a>,
-<a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/VTimeZone.html">iCalendar VTIMEZONE formatting and parsing</a>,
-<a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/RuleBasedTimeZone.html">Custom time zones constructed by user defined rules</a>.
- <li>Date Format Enhancements – <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/DateTimePatternGenerator.html">Date/Time Pattern Generator</a>,
-<a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/DateIntervalFormat.html">Date Interval Format</a>,
-<a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/DurationFormat.html">Duration Format</a>.
- <li><a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/Normalizer.html">Unicode
-Normalization</a> – Canonical text representation for W3C.</li>
- <li><a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/NumberFormat.html">Number
-Format Enhancements</a> – Scientific Notation, Spelled out.</li>
- <li><a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/BreakIterator.html">Enhanced
-word-break detection</a> – Rule-based, supports Thai</li>
- <li><a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/Transliterator.html">Transliteration</a>
-– A general framework for converting text from one format to another,
-e.g. Cyrillic to Latin, or Hex to Unicode. </li>
- <li>Unicode Text <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/UnicodeCompressor.html">Compression</a>
-& <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/UnicodeDecompressor.html">Decompression</a>
-– 2:1 compression on English Unicode text.</li>
- <li>Collation – <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/RuleBasedCollator.html">Rule-based
-sorting</a>, <a
- href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/StringSearch.html">Efficient
-multi-lingual searching</a>,
-<a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/AlphabeticIndex.html">Alphabetic indexing</a></li>
-</ul>
-<h2 class="doc"><a name="HowToInstallJavac"></a>How to Install and Build</h2>
-<p>
-To install ICU4J, simply place the pre-built jar file <strong>icu4j.jar</strong>
-on your Java CLASSPATH. If you need Charset API support please also place
-<strong>icu4j-charset.jar</strong> on your class path along with <strong>icu4j.jar</strong>.
-</p>
-<p>
-To build ICU4J, you will need JDK 7 or later (JDK 8 is the reference environment for this release)
-and the Apache Ant version 1.9 or later. It's recommended to install both the JDK and Ant
-somewhere <em>outside</em>the ICU4J directory. For example, on Linux you might install
-these in <code>/usr/local</code>.</p>
-<ul>
- <li>Install JDK 8.</li>
- <li>Install the <a href="http://ant.apache.org/"><strong>Apache Ant</strong></a>
- 1.9 or later.
- <li>Set environment variables JAVA_HOME, ANT_HOME and PATH, for example:
- <pre>
- set JAVA_HOME=C:\jdk1.8.0
- set ANT_HOME=C:\apache-ant
- set PATH=%JAVA_HOME%\bin;%ANT_HOME%\bin;%PATH%</pre>
- </pre>
- </li>
-</ul>
-<p>Once the JDK and Ant are configured, run the desired target defined in
-<strong>build.xml</strong>. The default target is "jar" which compiles ICU4J library
-class files and create ICU4J jar files. For example:</p>
-<blockquote>
-<pre>C:\icu4j>ant
-Buildfile: C:\icu4j\build.xml
-
-info:
- [echo] ----- Build Environment Information -------------------
- [echo] Java Home: C:\jdk1.8.0\jre
- [echo] Java Version: 1.8.0_181
- [echo] Ant Home: C:\apache-ant
- [echo] Ant Version: Apache Ant(TM) version 1.10.1 compiled on February 2 2017
- [echo] OS: Windows 10
- [echo] OS Version: 10.0
- [echo] OS Arch: amd64
- [echo] Host: ICUDEV
- [echo] -------------------------------------------------------
-
-core:
-
-@compile:
- [echo] build-local: ../../shared/../../build-local.properties
- [echo] --- java compiler arguments ------------------------
- [echo] source dir: C:\icu4j\main\classes\core/src
- [echo] output dir: C:\icu4j\main\classes\core/out/bin
- [echo] bootclasspath:
- [echo] classpath:
- [echo] source: 1.7
- [echo] target: 1.7
- [echo] debug: on
- [echo] encoding: UTF-8
- [echo] compiler arg: -Xlint:all,-deprecation,-dep-ann,-options,-overrides
- [echo] ----------------------------------------------------
- [mkdir] Created dir: C:\icu4j\main\classes\core\out\bin
- [javac] Compiling 470 source files to C:\icu4j\main\classes\core\out\bin
- [javac] Note: Some input files use or override a deprecated API.
- [javac] Note: Recompile with -Xlint:deprecation for details.
-
-compile:
-
-@copy:
- [copy] Copying 24 files to C:\icu4j\main\classes\core\out\bin
-
-set-icuconfig-datapath:
-
-copy-data:
- [unjar] Expanding: C:\icu4j\main\shared\data\icudata.jar into C:\icu4j\main\
-classes\core\out\bin
- [unjar] Expanding: C:\icu4j\main\shared\data\icutzdata.jar into C:\icu4j\mai
-n\classes\core\out\bin
-
-...
-...
-...
-
-localespi:
-
-@compile:
- [echo] build-local: ../../shared/../../build-local.properties
- [echo] --- java compiler arguments ------------------------
- [echo] source dir: C:\icu4j\main\classes\localespi/src
- [echo] output dir: C:\icu4j\main\classes\localespi/out/bin
- [echo] bootclasspath:
- [echo] classpath: C:\icu4j\main\classes\core\out\lib\icu4j-core.jar;C:
-\icu4j\main\classes\collate\out\lib\icu4j-collate.jar
- [echo] source: 1.7
- [echo] target: 1.7
- [echo] debug: on
- [echo] encoding: UTF-8
- [echo] compiler arg: -Xlint:all,-deprecation,-dep-ann,-options
- [echo] ----------------------------------------------------
- [mkdir] Created dir: C:\icu4j\main\classes\localespi\out\bin
- [javac] Compiling 22 source files to C:\icu4j\main\classes\localespi\out\bin
-
-
-compile:
-
-@copy:
- [copy] Copying 11 files to C:\icu4j\main\classes\localespi\out\bin
-
-copy:
-
-@jar:
- [mkdir] Created dir: C:\icu4j\main\classes\localespi\out\lib
- [copy] Copying 1 file to C:\icu4j\main\classes\localespi\out
- [jar] Building jar: C:\icu4j\main\classes\localespi\out\lib\icu4j-localesp
-i.jar
-
-jar:
-
-@src-jar:
- [jar] Building jar: C:\icu4j\main\classes\localespi\out\lib\icu4j-localesp
-i-src.jar
-
-src-jar:
-
-build:
-
-jar:
- [copy] Copying 1 file to C:\icu4j
- [copy] Copying 1 file to C:\icu4j
-
-BUILD SUCCESSFUL
-Total time: 30 seconds</pre>
-</blockquote>
-<I>Note: The above output is an example. The numbers are likely to be different with the current version ICU4J.</I>
-<p>The following are some targets that you can provide to <b>ant</b>.
-For more targets run <code>ant -projecthelp</code> or see the build.xml file.</p>
-<table border="1">
-<tr>
- <th>jar (default)</th>
- <td>Create ICU4J runtime library jar archives (<code>icu4j.jar</code>,
- <code>icu4j-charset.jar</code> and <code>icu4j-localespi.jar</code>)
- in the root ICU4J directory.</td>
-</tr>
-<tr>
- <th>check</th>
- <td>Build all ICU4J runtime library classes and corresponding unit test cases,
- then run the tests.</td>
-</tr>
-<tr>
- <th>clean</th>
- <td>Remove all build output files.</td>
-</tr>
-<tr>
- <th>main</th>
- <td>Build all ICU4J runtime library sub-components (under the directory
- <code>main/classes</code>).</td>
-</tr>
-<tr>
- <th>tests</th>
- <td>Build all ICU4J unit test sub-components (under the directory <code>main/tests</code>)
- and their dependencies.</td>
-</tr>
-<tr>
- <th>tools</th>
- <td>Build the tools.</td>
-</tr>
-<tr>
- <th>docs</th>
- <td>Run javadoc over the ICU4J runtime library files, generating an HTML documentation
- tree in the subdirectory <code>doc</code>.</td>
-</tr>
-<tr>
- <th>jarDocs</th>
- <td>Create ICU4J doc jar archive (<code>icu4jdocs.jar</code>) containing API reference
- docs in the root ICU4J directory. </td>
-</tr>
-<tr>
- <th>jarDemos</th>
- <td>Create ICU4J demo jar archive (<code>icu4jdemos.jar</code>) in the root ICU4J
- directory.</td>
-</tr>
-</table>
-
-<p>For more information, read the Ant documentation and the <strong>build.xml</strong>
-file.</p>
-<p><b>Note:</b> If you get an OutOfMemoryError when you are running <tt>"ant check"</tt>,
-you can set the heap size of the jvm by setting the environment variable JVM_OPTIONS
-to the appropriate java options.</p>
-
-<p><b>Eclipse users:</b> See the ICU4J site for information on<a
- href="http://site.icu-project.org/setup/eclipse">
-how to configure Eclipse</a> to build and develop ICU4J on Eclipse IDE.</p>
-
-<p><b>Note:</b> To install and configure ICU4J Locale Service Provider, please refer the user guide
-page <a href="https://unicode-org.github.io/icu/userguide/icu4j-locale-service-provider">ICU4J Locale
-Service Provider</a>.</p>
-
-<h2 class="doc"><a name="tryingout"></a>Trying Out ICU4J</h2>
-<p><strong>Note:</strong> the demos provided with ICU4J are for the
-most part undocumented. This list can show you where to look, but
-you'll have to experiment a bit. The demos are <strong>unsupported</strong>
-and may change or disappear without notice.</p>
-<p>The icu4j.jar file contains only the ICU4J runtime library classes, not the
-demo classes, so unless you build ICU4J there is little to try out.
-</p>
-<h3 class="doc">Charset</h3>
-To try out the <strong>Charset</strong> package, build <strong>icu4j.jar</strong> and
-<strong>icu4j-charset.jar</strong> using the 'jar' target.
-You can use the charsets by placing these files on your classpath.
-<blockquote><tt>java -cp $icu4j_root/icu4j.jar:$icu4j_root/icu4j-charset.jar <your program></tt></blockquote>
-<h3 class="doc">Other demos</h3>
-<p>The other demo programs are <strong>not supported</strong> and
-exist only to let you experiment with the ICU4J classes. First, build ICU4J using <tt>ant jarDemos</tt>.
-Then launch the demos as below:</p>
-<blockquote><tt>java -jar $icu4j_root/icu4jdemos.jar</tt></blockquote>
-
-<h2 class="doc"><a name="resources">ICU4J Resource Information</a></h2>
-Starting with release 2.1, ICU4J includes its own
-resource information
-which is completely independent of the JRE resource information. (Note,
-ICU4J 2.8 to 3.4, time zone information depends on the underlying JRE).
-The ICU4J resource information is equivalent to the information in ICU4C and
-many resources are, in fact, the same binary files that ICU4C uses.
-<p>
-By default the ICU4J distribution includes all of the standard resource
-information. It is located under the directory com/ibm/icu/impl/data.
-Depending on the service, the data is in different locations and in
-different formats. <strong>Note:</strong> This will continue to change
-from release to release, so clients should not depend on the exact
-organization
-of the data in ICU4J.</p>
-<ul>
- <li>The primary <b>locale data</b> is under the directory <tt>icudt69b</tt>,
- as a set of <tt>".res"</tt> files whose names are the locale identifiers.
- Locale naming is documented the <code>com.ibm.icu.util.ULocale</code>
- class, and the use of these names in searching for resources is documented
- in <code>com.ibm.icu.util.UResourceBundle</code>.</li>
-
- <li>The <b>break iterator data</b> is under the directory <tt>icudt69b/brkitr</tt>,
- as a set of <tt>".res"</tt>, <tt>".brk"</tt> and <tt>".dict"</tt> files.</li>
-
- <li>The <b>collation data</b> is under the directory <tt>icudt69b/coll</tt>,
- as a set of <tt>".res"</tt> files.</li>
-
- <li>The <b>currency display name data</b> is under the directory <tt>icudt69b/curr</tt>,
- as a set of <tt>".res"</tt> files.</li>
-
- <li>The <b>language display name data</b> is under the directory <tt>icudt69b/lang</tt>,
- as a set of <tt>".res"</tt> files.</li>
-
- <li>The <b>rule-based number format data</b> is under the directory
- <tt>icudt69b/rbnf</tt>, as a set of <tt>".res"</tt> files.
-
- <li>The <b>region display name data</b> is under the directory <tt>icudt69b/region</tt>,
- as a set of <tt>".res"</tt> files.</li>
-
- <li>The <b>rule-based transliterator data</b> is under the directory
- <tt>icudt69b/translit</tt>, as a set of <tt>".res"</tt> files.</li>
-
- <li>The <b>measurement unit data</b> is under the directory <tt>icudt69b/unit</tt>,
- as a set of <tt>".res"</tt> files.</li>
-
- <li>The <b>time zone display name data</b> is under the directory
- <tt>icudt69b/zone</tt>, as a set of <tt>".res"</tt> files.</li>
-
- <li>The <b>character property data</b> and default <b>unicode collation algorithm
- (UCA) data</b> is found under the directory <tt>icudt69b</tt>, as a set of
- <tt>".icu"</tt> files. </li>
-
- <li>The <b>normalization data</b> is found under the directory <tt>icudt69b</tt>,
- as a set of <tt>".nrm"</tt> files. </li>
-
- <li>The <b>character set converter data</b> is under the directory
- <tt>icudt69b</tt>, as a set of <tt>".cnv"</tt> files. These files are
- currently included only in icu-charset.jar.</li>
-
- <li>The <b>time zone rule data</b> is under the directory
- <tt>icudt69b</tt>, as <tt>zoneinfo64.res</tt>.</li>
-
- <li>The <b>holiday data</b> is under the directory <tt>icudt69b</tt>,
- as a set of <tt>".class"</tt> files, named <tt>"HolidayBundle_"</tt>
- followed by the locale ID.</li>
-
-</ul>
-<p>
-Some of the data files alias or otherwise reference data from other
-data files. One reason for this is because some locale names have
-changed. For example, <tt>he_IL</tt> used to be <tt>iw_IL</tt>. In
-order to support both names but not duplicate the data, one of the
-resource files refers to the other file's data. In other cases, a
-file may alias a portion of another file's data in order to save
-space. Currently ICU4J provides no tool for revealing these
-dependencies.</p>
-<blockquote><strong>Note:</strong> Java's <code>Locale</code> class
-silently converts the language code <tt>"he"</tt> to <tt>"iw"</tt>
-when you construct the Locale (for versions of Java through Java 5). Thus
-Java cannot be used to locate resources that use the <tt>"he"</tt>
-language code. ICU, on the other hand, does not perform this
-conversion in ULocale, and instead uses aliasing in the locale data to
-represent the same set of data under different locale
-ids.</blockquote>
-<p>
-Resource files that use locale ids form a hierarchy, with up to four
-levels: a root, language, region (country), and variant. Searches for
-locale data attempt to match as far down the hierarchy as possible,
-for example, <tt>"he_IL"</tt> will match <tt>he_IL</tt>, but
-<tt>"he_US"</tt> will match <tt>he</tt> (since there is no <tt>US</tt>
-variant for he, and <tt>"xx_YY</tt> will match root (the
-default fallback locale) since there is no <tt>xx</tt> language code
-in the locale hierarchy. Again, see
-<code>java.util.ResourceBundle</code> for more information.
-</p>
-<p>
-<strong>Currently ICU4J provides no tool for revealing these
-dependencies</strong> between data files, so trimming the data
-directly in the ICU4J project is a hit-or-miss affair. The key point
-when you remove data is to make sure to remove all dependencies on
-that data as well. For example, if you remove <tt>he.res</tt>, you
-need to remove <tt>he_IL.res</tt>, since it is lower in the hierarchy,
-and you must remove iw.res, since it references <tt>he.res</tt>, and
-<tt>iw_IL.res</tt>, since it depends on it (and also references
-<tt>he_IL.res</tt>).
-</p>
-<p>
-Unfortunately, the jar tool in the JDK provides no way to remove items
-from a jar file. Thus you have to extract the resources, remove the
-ones you don't want, and then create a new jar file with the remining
-resources. See the jar tool information for how to do this. Before
-'rejaring' the files, be sure to thoroughly test your application with
-the remaining resources, making sure each required resource is
-present.
-</p>
-<h3 class="doc">Using additional resource files with ICU4J</h3>
-<blockquote>
- <table cellpadding="3" frame="border" rules="none" width="50%">
- <tbody>
- <tr>
- <td><b><font color="red" size="+1">Warning:</font> Resource
-file formats can change across releases of ICU4J!</b></td>
- </tr>
- <tr>
- <td>The format of ICU4J resources is not part of the API.
-Clients who develop their own resources for use with ICU4J should be
-prepared to
-regenerate them when they move to new releases of ICU4J.</td>
- </tr>
- </tbody>
- </table>
-</blockquote>
-<p>
-We are still developing ICU4J's resource mechanism. Currently it
-is not possible to mix icu's new binary <tt>.res</tt>
-resources
-with traditional java-style <tt>.class</tt> or <tt>.txt</tt>
-resources. We might
-allow for this in a future release, but since the resource data and
-format is not formally
-supported, you run the risk of incompatibilities with future releases
-of ICU4J.
-</p>
-<p>
-Resource data in ICU4J is checked in to the repository as a jar file
-containing the resource binaries, <tt>$icu4j_root/main/shared/data/icudata.jar</tt>.
-This means that inspecting the contents of these resources is difficult.
-They currently are compiled from ICU4C <tt>.txt</tt> file data. You
-can view the contents of the ICU4C text resource files to understand
-the contents of the ICU4J resources.
-</p>
-<p>
-The files in <tt>icudata.jar</tt> get extracted to <tt>com/ibm/icu/impl/data</tt>
-in the build output directory by some build targets.
-</p>
-<h3 class="doc"><a name="resourcesICU4C">Building ICU4J Resources from ICU4C</a></h3>
-ICU4J data is built by ICU4C tools. Please see "icu4j-readme.txt" in icu4c/source/data for the procedures.
-<h5> Generating Data from CLDR </h5>
-<I> Note: This procedure assumes that all 3 sources are present</I>
-<ol>
- <li>Checkout or download CLDR version 'release-39'</li>
- <li>Checkout ICU with tag 'release-69-1'</li>
- <li>cd to icu4c/source/data directory</li>
- <li>Follow the instructions in icu4c/source/data/cldr-icu-readme.txt</li>
- <li>Rebuild ICU4C with the newly generated data.</li>
- <li>Run ICU4C tests to verify that the new data is good.</li>
- <li>Build ICU4J data from ICU4C data by following the procedures in icu4j/source/data/icu4j-readme.txt</li>
- <li>cd to icu4j dir</li>
- <li>Build and test icu4j</li>
-</ol>
-
-<h2 class="doc"><a name="timezone"></a>About ICU4J Time Zone</h2>
-<p>ICU4J library includes the latest time zone data, as of the release date.
-However, time zone data is frequently updated in response
-to changes made by local governments around the world. If you need to update
-the time zone data, please refer the ICU user guide topic
-<a href="https://unicode-org.github.io/icu/userguide/datetime/timezone#updating-the-time-zone-data">Updating the Time Zone Data</a>.</p>
-<p>You can optionally configure ICU4J date and time
-service classes to use underlying JDK TimeZone implementation (see the ICU4J API reference
-<a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/TimeZone.html">TimeZone</a>
-for the details). When this configuration is enabled, ICU's own time zone data
-won't be used and you have to get time zone data patches from the JRE vendor.</p>
-
-<h2 class="doc"><a name="WhereToFindMore"></a>Where to Find More
-Information</h2>
-<p><a href="http://www.icu-project.org/">http://www.icu-project.org/</a>
-is the home page of International Components for Unicode development project</p>
-
-<h2 class="doc"><a name="SubmittingComments"></a>Submitting Comments,
-Requesting Features and
-Reporting Bugs</h2>
-<p>Your comments are important to making ICU4J successful. We are
-committed to investigate any bug reports or suggestions,
-and will use your feedback to help plan future releases.</p>
-<p>To submit comments, request features and report bugs,
-please see <a href="http://www.icu-project.org/bugs.html">ICU bug database
-information</a> or contact us through the <a
- href="http://www.icu-project.org/contacts.html">ICU Support
-mailing list</a>. While we are not able to respond individually to each comment, we do
-review all comments.</p>
-<br>
-<br>
-<h2>Thank you for your interest in ICU4J!</h2>
-<br>
-<hr align="center" size="2" width="100%">
-<p><I><font size="-1">© 2016 and later: Unicode, Inc. and others.<br>
-License & terms of use: <a href="http://www.unicode.org/copyright.html">http://www.unicode.org/copyright.html</a>
-</font></I></p>
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