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.
(cherry picked from commit b64c50cfe4fca783f23341fffebc7d8f84f58820)

diff --git a/ChangeLog b/ChangeLog
index 9f58471..a742fbb 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2011-04-01  Bruno Haible  <bruno@clisp.org>
+
+       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.
+
 2011-03-31  Eric Blake  <eblake@redhat.com>
 
        nonblocking: fix mingw test failures

diff --git a/doc/posix-functions/wcpcpy.texi b/doc/posix-functions/wcpcpy.texi
index 30b59be..7566cd8 100644 (file)
--- a/doc/posix-functions/wcpcpy.texi
+++ b/doc/posix-functions/wcpcpy.texi
@@ -12,6 +12,9 @@ Portability problems fixed by Gnulib:
 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.
+@item
+This function is not declared (without @code{-D_GNU_SOURCE}) on some platforms:
+glibc 2.13.
 @end itemize
 
 Portability problems not fixed by Gnulib:

diff --git a/doc/posix-functions/wcpncpy.texi b/doc/posix-functions/wcpncpy.texi
index 0d8e644..ad79113 100644 (file)
--- a/doc/posix-functions/wcpncpy.texi
+++ b/doc/posix-functions/wcpncpy.texi
@@ -12,6 +12,9 @@ Portability problems fixed by Gnulib:
 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.
+@item
+This function is not declared (without @code{-D_GNU_SOURCE}) on some platforms:
+glibc 2.13.
 @end itemize
 
 Portability problems not fixed by Gnulib:

diff --git a/doc/posix-functions/wcwidth.texi b/doc/posix-functions/wcwidth.texi
index a3aec68..ae33b75 100644 (file)
--- a/doc/posix-functions/wcwidth.texi
+++ b/doc/posix-functions/wcwidth.texi
@@ -12,6 +12,9 @@ Portability problems fixed by Gnulib:
 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.
+@item
 This function handles combining characters in UTF-8 locales incorrectly on some
 platforms:
 MacOS X 10.3.

diff --git a/m4/wcpcpy.m4 b/m4/wcpcpy.m4
index 5ffe1a1..b23c0ef 100644 (file)
--- a/m4/wcpcpy.m4
+++ b/m4/wcpcpy.m4
@@ -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 @@ dnl with or without modifications, as long as this notice is preserved.
 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

diff --git a/m4/wcpncpy.m4 b/m4/wcpncpy.m4
index 939e880..a4d73e2 100644 (file)
--- a/m4/wcpncpy.m4
+++ b/m4/wcpncpy.m4
@@ -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 @@ dnl with or without modifications, as long as this notice is preserved.
 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

diff --git a/modules/wcpcpy b/modules/wcpcpy
index 50ec8c3..90f6e84 100644 (file)
--- a/modules/wcpcpy
+++ b/modules/wcpcpy
@@ -13,6 +13,7 @@ lib/wcpcpy-impl.h
 m4/wcpcpy.m4
 
 Depends-on:
+extensions
 wchar
 
 configure.ac:

diff --git a/modules/wcpncpy b/modules/wcpncpy
index 2ba35a2..8506bf4 100644 (file)
--- a/modules/wcpncpy
+++ b/modules/wcpncpy
@@ -7,6 +7,7 @@ lib/wcpncpy-impl.h
 m4/wcpncpy.m4
 
 Depends-on:
+extensions
 wchar
 
 configure.ac: