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wcpcpy, wcpncpy: ensure declaration


From: Bruno Haible
Subject: wcpcpy, wcpncpy: ensure declaration
Date: Fri, 1 Apr 2011 23:24:46 +0200
User-agent: KMail/1.9.9

After this patch in glibc
http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=dbb0472f054a4241feec09af30db850dd4d18a7b
it is necessary to define _GNU_SOURCE to ensure that wcpcpy and wcpncpy are
declared.


2011-04-01  Bruno Haible  <address@hidden>

        wcpcpy, wcpncpy: Ensure declaration on glibc >= 2.13 systems.
        * m4/wcpcpy.m4 (gl_FUNC_WCPCPY): Require AC_USE_SYSTEM_EXTENSIONS.
        * m4/wcpncpy.m4 (gl_FUNC_WCPNCPY): Likewise.
        * modules/wcpcpy (Depends-on): Add extensions.
        * modules/wcpncpy (Depends-on): Likewise.
        * doc/posix-functions/wcpcpy.texi: Mention missing declaration on glibc
        systems.
        * doc/posix-functions/wcpncpy.texi: Likewise.
        * doc/posix-functions/wcwidth.texi: Likewise.

--- doc/posix-functions/wcpcpy.texi.orig        Fri Apr  1 23:20:40 2011
+++ doc/posix-functions/wcpcpy.texi     Fri Apr  1 23:15:27 2011
@@ -12,6 +12,9 @@
 This function is missing on some platforms:
 MacOS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, AIX 4.3.2, HP-UX 11,
 IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x, mingw, Interix 3.5, BeOS.
address@hidden
+This function is not declared (without @code{-D_GNU_SOURCE}) on some platforms:
+glibc 2.13.
 @end itemize
 
 Portability problems not fixed by Gnulib:
--- doc/posix-functions/wcpncpy.texi.orig       Fri Apr  1 23:20:40 2011
+++ doc/posix-functions/wcpncpy.texi    Fri Apr  1 23:15:26 2011
@@ -12,6 +12,9 @@
 This function is missing on some platforms:
 MacOS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, AIX 4.3.2, HP-UX 11,
 IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x, mingw, Interix 3.5, BeOS.
address@hidden
+This function is not declared (without @code{-D_GNU_SOURCE}) on some platforms:
+glibc 2.13.
 @end itemize
 
 Portability problems not fixed by Gnulib:
--- doc/posix-functions/wcwidth.texi.orig       Fri Apr  1 23:20:40 2011
+++ doc/posix-functions/wcwidth.texi    Fri Apr  1 23:15:26 2011
@@ -12,6 +12,9 @@
 This function is missing on some platforms:
 IRIX 5.3, Solaris 2.5.1, mingw, BeOS.
 @item
+This function is not declared (without @code{-D_GNU_SOURCE}) on some platforms:
+glibc 2.8.
address@hidden
 This function handles combining characters in UTF-8 locales incorrectly on some
 platforms:
 MacOS X 10.3.
--- m4/wcpcpy.m4.orig   Fri Apr  1 23:20:40 2011
+++ m4/wcpcpy.m4        Fri Apr  1 23:10:01 2011
@@ -1,4 +1,4 @@
-# wcpcpy.m4 serial 1
+# wcpcpy.m4 serial 2
 dnl Copyright (C) 2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -7,6 +7,10 @@
 AC_DEFUN([gl_FUNC_WCPCPY],
 [
   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+  dnl Persuade glibc <wchar.h> to declare wcpcpy().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
   AC_CHECK_FUNCS_ONCE([wcpcpy])
   if test $ac_cv_func_wcpcpy = no; then
     HAVE_WCPCPY=0
--- m4/wcpncpy.m4.orig  Fri Apr  1 23:20:40 2011
+++ m4/wcpncpy.m4       Fri Apr  1 23:10:01 2011
@@ -1,4 +1,4 @@
-# wcpncpy.m4 serial 1
+# wcpncpy.m4 serial 2
 dnl Copyright (C) 2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -7,6 +7,10 @@
 AC_DEFUN([gl_FUNC_WCPNCPY],
 [
   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+  dnl Persuade glibc <wchar.h> to declare wcpncpy().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
   AC_CHECK_FUNCS_ONCE([wcpncpy])
   if test $ac_cv_func_wcpncpy = no; then
     HAVE_WCPNCPY=0
--- modules/wcpcpy.orig Fri Apr  1 23:20:40 2011
+++ modules/wcpcpy      Fri Apr  1 23:10:25 2011
@@ -13,6 +13,7 @@
 m4/wcpcpy.m4
 
 Depends-on:
+extensions
 wchar
 
 configure.ac:
--- modules/wcpncpy.orig        Fri Apr  1 23:20:40 2011
+++ modules/wcpncpy     Fri Apr  1 23:10:38 2011
@@ -7,6 +7,7 @@
 m4/wcpncpy.m4
 
 Depends-on:
+extensions
 wchar
 
 configure.ac:
-- 
In memoriam Karim Mohammedzadeh 
<http://en.wikipedia.org/wiki/Karim_Mohammedzadeh>



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