[SCM] GNU Autoconf source repository branch, master, updated. v2.69-72-g1e3779d

[Paul Eggert]

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU Autoconf source repository".

http://git.sv.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=1e3779d9b13604aafc50e318f3ea4a1c00ba2003

The branch, master has been updated
       via  1e3779d9b13604aafc50e318f3ea4a1c00ba2003 (commit)
      from  9e33646cac3129cce430b55149c31f753d27fcfa (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit 1e3779d9b13604aafc50e318f3ea4a1c00ba2003
Author: Paul Eggert <address@hidden>
Date:   Fri Feb 8 13:01:15 2013 -0800

    AC_USE_SYSTEM_EXTENSIONS: improve port to HP-UX
    
    * lib/autoconf/specific.m4 (AC_USE_SYSTEM_EXTENSIONS):
    On hosts that need _XOPEN_SOURCE, define it when configuring, too,
    so that it's compatible with the value used when compiling.

-----------------------------------------------------------------------

Summary of changes:
 lib/autoconf/specific.m4 |   27 ++++++++++++++++++++++-----
 1 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/lib/autoconf/specific.m4 b/lib/autoconf/specific.m4
index 248a7a3..4fca0a8 100644
--- a/lib/autoconf/specific.m4
+++ b/lib/autoconf/specific.m4
@@ -395,11 +395,6 @@ dnl configure.ac when using autoheader 2.62.
 #ifndef _GNU_SOURCE
 # undef _GNU_SOURCE
 #endif
-/* HP-UX 11.11 defines mbstate_t only if _XOPEN_SOURCE is defined to 500,
-   regardless of whether compiling with -Ae or -D_HPUX_SOURCE=1.  */
-#ifdef __hpux
-# define _XOPEN_SOURCE 500
-#endif
 /* Enable threading extensions on Solaris.  */
 #ifndef _POSIX_PTHREAD_SEMANTICS
 # undef _POSIX_PTHREAD_SEMANTICS
@@ -408,6 +403,12 @@ dnl configure.ac when using autoheader 2.62.
 #ifndef _TANDEM_SOURCE
 # undef _TANDEM_SOURCE
 #endif
+/* Enable X/Open extensions if necessary.  HP-UX 11.11 defines
+   mbstate_t only if _XOPEN_SOURCE is defined to 500, regardless of
+   whether compiling with -Ae or -D_HPUX_SOURCE=1.  */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
+#endif
 /* Enable general extensions on Solaris.  */
 #ifndef __EXTENSIONS__
 # undef __EXTENSIONS__
@@ -428,6 +429,22 @@ dnl configure.ac when using autoheader 2.62.
   AC_DEFINE([_GNU_SOURCE])
   AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
   AC_DEFINE([_TANDEM_SOURCE])
+  AC_CACHE_CHECK([whether _XOPEN_SOURCE should be defined],
+    [ac_cv_should_define__xopen_source],
+    [ac_cv_should_define__xopen_source=no
+     AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM([[
+          #include <wchar.h>
+          mbstate_t x;]])],
+       [],
+       [AC_COMPILE_IFELSE(
+          [AC_LANG_PROGRAM([[
+             #define _XOPEN_SOURCE 500
+             #include <wchar.h>
+             mbstate_t x;]])],
+          [ac_cv_should_define__xopen_source=yes])])])
+  test $ac_cv_should_define__xopen_source = yes &&
+    AC_DEFINE([_XOPEN_SOURCE], [500])
 ])# AC_USE_SYSTEM_EXTENSIONS
 
 


hooks/post-receive
-- 
GNU Autoconf source repository