From de16c44aa9f170c5d1643ef2d42fd0355e7c902b Mon Sep 17 00:00:00 2001
From: "Steven R. Loomis" <srl@icu-project.org>
Date: Wed, 26 Oct 2011 23:02:14 +0000
Subject: [PATCH] ICU-8908 #error if U_COMMON_IMPLEMENTATION, etc isnt set

X-SVN-Rev: 30876
---
 icu4c/source/common/putil.cpp            | 5 +++++
 icu4c/source/common/ubidiln.c            | 6 +++++-
 icu4c/source/i18n/format.cpp             | 6 +++++-
 icu4c/source/io/ucln_io.c                | 7 ++++++-
 icu4c/source/tools/toolutil/toolutil.cpp | 4 ++++
 5 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/icu4c/source/common/putil.cpp b/icu4c/source/common/putil.cpp
index dcb48e21e3c..ae39d532527 100644
--- a/icu4c/source/common/putil.cpp
+++ b/icu4c/source/common/putil.cpp
@@ -61,6 +61,11 @@
 #include <locale.h>
 #include <float.h>
 
+#ifndef U_COMMON_IMPLEMENTATION
+#error U_COMMON_IMPLEMENTATION not set - must be set for all ICU source files in common/ - see http://userguide.icu-project.org/howtouseicu
+#endif
+
+
 /* include system headers */
 #if U_PLATFORM_USES_ONLY_WIN32_API
     /*
diff --git a/icu4c/source/common/ubidiln.c b/icu4c/source/common/ubidiln.c
index 66bcefcc365..518a54d80ab 100644
--- a/icu4c/source/common/ubidiln.c
+++ b/icu4c/source/common/ubidiln.c
@@ -1,7 +1,7 @@
 /*
 ******************************************************************************
 *
-*   Copyright (C) 1999-2010, International Business Machines
+*   Copyright (C) 1999-2011, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ******************************************************************************
@@ -22,6 +22,10 @@
 #include "ubidiimp.h"
 #include "uassert.h"
 
+#ifndef U_COMMON_IMPLEMENTATION
+#error U_COMMON_IMPLEMENTATION not set - must be set for all ICU source files in common/ - see http://userguide.icu-project.org/howtouseicu
+#endif
+
 /*
  * General remarks about the functions in this file:
  *
diff --git a/icu4c/source/i18n/format.cpp b/icu4c/source/i18n/format.cpp
index 701b489fff7..d80a44da7a8 100644
--- a/icu4c/source/i18n/format.cpp
+++ b/icu4c/source/i18n/format.cpp
@@ -1,6 +1,6 @@
 /*
 *******************************************************************************
-* Copyright (C) 1997-2010, International Business Machines Corporation and    *
+* Copyright (C) 1997-2011, International Business Machines Corporation and    *
 * others. All Rights Reserved.                                                *
 *******************************************************************************
 *
@@ -23,6 +23,10 @@
 
 #include "unicode/utypes.h"
 
+#ifndef U_I18N_IMPLEMENTATION
+#error U_I18N_IMPLEMENTATION not set - must be set for all ICU source files in i18n/ - see http://userguide.icu-project.org/howtouseicu
+#endif
+
 /*
  * Dummy code:
  * If all modules in the I18N library are switched off, then there are no
diff --git a/icu4c/source/io/ucln_io.c b/icu4c/source/io/ucln_io.c
index 05c00b9ea10..791a285c11b 100644
--- a/icu4c/source/io/ucln_io.c
+++ b/icu4c/source/io/ucln_io.c
@@ -1,7 +1,7 @@
 /*
 ******************************************************************************
 *                                                                            *
-* Copyright (C) 2001-2009, International Business Machines                   *
+* Copyright (C) 2001-2011, International Business Machines                   *
 *                Corporation and others. All Rights Reserved.                *
 *                                                                            *
 ******************************************************************************
@@ -19,6 +19,11 @@
 #include "umutex.h"
 #include "uassert.h"
 
+#ifndef U_IO_IMPLEMENTATION
+#error U_IO_IMPLEMENTATION not set - must be set for all ICU source files in io/ - see http://userguide.icu-project.org/howtouseicu
+#endif
+
+
 /**  Auto-client */
 #define UCLN_TYPE UCLN_IO
 #include "ucln_imp.h"
diff --git a/icu4c/source/tools/toolutil/toolutil.cpp b/icu4c/source/tools/toolutil/toolutil.cpp
index bef774f4be4..b42044ed7fe 100644
--- a/icu4c/source/tools/toolutil/toolutil.cpp
+++ b/icu4c/source/tools/toolutil/toolutil.cpp
@@ -22,6 +22,10 @@
 #include <sys/stat.h>
 #include "unicode/utypes.h"
 
+#ifndef U_TOOLUTIL_IMPLEMENTATION
+#error U_TOOLUTIL_IMPLEMENTATION not set - must be set for all ICU source files in common/ - see http://userguide.icu-project.org/howtouseicu
+#endif
+
 #if U_PLATFORM_USES_ONLY_WIN32_API
 #   define VC_EXTRALEAN
 #   define WIN32_LEAN_AND_MEAN
-- 
2.40.0