<html lang="en-US" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
<head>
- <title>ReadMe for ICU 49</title>
+ <title>ReadMe for ICU 50</title>
<meta name="COPYRIGHT" content=
"Copyright (c) 1997-2012 IBM Corporation and others. All Rights Reserved." />
<meta name="KEYWORDS" content=
<body class="draft">
<h1>International Components for Unicode<br />
- <abbr title="International Components for Unicode">ICU</abbr> 49 ReadMe</h1>
+ <abbr title="International Components for Unicode">ICU</abbr> 50 (DRAFT - M1) ReadMe</h1>
- <!--
- <p><b>Note:</b> This is a development milestone release of ICU4C 49.
- This milestone is intended for those wishing to get an early look at ICU 49 new features and API changes.
+ <p><b>Note:</b> This is a development milestone release of ICU4C 50.
+ This milestone is intended for those wishing to get an early look at ICU 50 new features and API changes.
It is not recommended for production use.
</p>
- -->
- <p>Last updated: 2012-Jun-05<br />
+
+ <p>Last updated: 2012-Jun-25<br />
Copyright © 1997-2012 International Business Machines Corporation and
others. All Rights Reserved.</p>
<!-- Remember that there is a copyright at the end too -->
<p>The following list concentrates on <em>changes that affect existing
applications migrating from previous ICU releases</em>.
- For more news about
- this release, see the <a href="http://site.icu-project.org/download/">ICU
- download page</a>.</p>
+ For more news about this release, see the
+ <!--
+ <a href="http://site.icu-project.org/download/">ICU download page</a>.
+ -->
+ <a href="http://site.icu-project.org/download/50milestone">ICU milestone download page</a>.
+ </p>
<h3>Threading support cannot be removed</h3>
<p>ICU4C 50 drops the --enable-threads/--disable-threads option
<code>u_setMutexFunctions()</code> and <code>u_setAtomicIncDecFunctions()</code>
with empty implementation functions.</p>
- <h3>C++ namespace support required</h3>
- <p>ICU4C 49 requires C++ namespace support.
- As a result, for example, rather than <code>U_NAMESPACE_QUALIFIER UnicodeString</code>
- you can now simply write <code>icu::UnicodeString</code>.</p>
-
- <h3>One shared platform.h</h3>
- <p>ICU4C 49 does not generate any source code files via autoconf any more.
- Instead, platform.h itself is now a normal source header file,
- and determines platform-specific settings via <code>#if ...</code> etc.</p>
-
- <p>(See the <a href="http://userguide.icu-project.org/howtouseicu">User Guide How To Use ICU chapter</a>.)</p>
-
- <p>As a result, it is easier to cross-compile ICU4C and/or use different build systems.
- No more headers are <code>#include</code>d from the build-output directory,
- and all platforms use the same set of source code files.</p>
-
- <p>However, it is likely that ICU4C 49 will not compile on some platforms
- (non-POSIX and/or older/unusual compilers etc.) that the ICU team did not test.
- As a temporary workaround, any platform-dependent macro for which <code>platform.h</code>
- does not determine the correct value can be predefined via <code>CPPFLAGS</code>
- or by adding an explicit <code>#define ...</code> into <code>platform.h</code>
- before it first tests that macro.</p>
-
- <p>Please submit a bug ticket per platform with details about your compiler,
- its version and its predefined macros.
- (For example, preprocessing an empty source file with gcc's <code>-dM</code> option
- outputs all of gcc's predefined macros: <code>gcc -E -dM -x c /dev/null | sort</code>)
- A patch to fix the problem would be welcome too!</p>
-
<h2><a name="Download" href="#Download" id="Download">How To Download the
Source Code</a></h2>
projects / icu / commitdiff