summaryrefslogtreecommitdiff
path: root/gnulib-m4/extensions.m4
diff options
context:
space:
mode:
authorManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:28:30 +0100
committerManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:28:30 +0100
commita9a31b1de5776a3b08a82101a4fa711294f0dd1d (patch)
tree159134a624e51509f40ed8823249f09a70d1dda3 /gnulib-m4/extensions.m4
parent5f2b09982312c98863eb9a8dfe2c608b81f58259 (diff)
Imported Upstream version 0.9.6+really0.9.3upstream/0.9.6+really0.9.3
Diffstat (limited to 'gnulib-m4/extensions.m4')
-rw-r--r--gnulib-m4/extensions.m461
1 files changed, 18 insertions, 43 deletions
diff --git a/gnulib-m4/extensions.m4 b/gnulib-m4/extensions.m4
index 35bc49c9..7d9458a8 100644
--- a/gnulib-m4/extensions.m4
+++ b/gnulib-m4/extensions.m4
@@ -1,14 +1,14 @@
-# serial 13 -*- Autoconf -*-
+# serial 9 -*- Autoconf -*-
# Enable extensions on systems that normally disable them.
-# Copyright (C) 2003, 2006-2015 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2006-2010 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
-# This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from git
+# This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from CVS
# Autoconf. Perhaps we can remove this once we can assume Autoconf
-# 2.70 or later everywhere, but since Autoconf mutates rapidly
+# 2.62 or later everywhere, but since CVS Autoconf mutates rapidly
# enough in this area it's likely we'll need to redefine
# AC_USE_SYSTEM_EXTENSIONS for quite some time.
@@ -30,7 +30,6 @@
# ------------------------
# Enable extensions on systems that normally disable them,
# typically due to standards-conformance issues.
-#
# Remember that #undef in AH_VERBATIM gets replaced with #define by
# AC_DEFINE. The goal here is to define all known feature-enabling
# macros, then, if reports of conflicts are made, disable macros that
@@ -39,39 +38,39 @@ AC_DEFUN_ONCE([AC_USE_SYSTEM_EXTENSIONS],
[AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
+ AC_REQUIRE([AC_CANONICAL_HOST])
+
AC_CHECK_HEADER([minix/config.h], [MINIX=yes], [MINIX=])
if test "$MINIX" = yes; then
AC_DEFINE([_POSIX_SOURCE], [1],
- [Define to 1 if you need to in order for 'stat' and other
+ [Define to 1 if you need to in order for `stat' and other
things to work.])
AC_DEFINE([_POSIX_1_SOURCE], [2],
[Define to 2 if the system does not provide POSIX.1 features
except with this defined.])
AC_DEFINE([_MINIX], [1],
[Define to 1 if on MINIX.])
- AC_DEFINE([_NETBSD_SOURCE], [1],
- [Define to 1 to make NetBSD features available. MINIX 3 needs this.])
fi
-dnl Use a different key than __EXTENSIONS__, as that name broke existing
-dnl configure.ac when using autoheader 2.62.
- AH_VERBATIM([USE_SYSTEM_EXTENSIONS],
+ dnl HP-UX 11.11 defines mbstate_t only if _XOPEN_SOURCE is defined to 500,
+ dnl regardless of whether the flags -Ae or _D_HPUX_SOURCE=1 are already
+ dnl provided.
+ case "$host_os" in
+ hpux*)
+ AC_DEFINE([_XOPEN_SOURCE], [500],
+ [Define to 500 only on HP-UX.])
+ ;;
+ esac
+
+ AH_VERBATIM([__EXTENSIONS__],
[/* Enable extensions on AIX 3, Interix. */
#ifndef _ALL_SOURCE
# undef _ALL_SOURCE
#endif
-/* Enable general extensions on OS X. */
-#ifndef _DARWIN_C_SOURCE
-# undef _DARWIN_C_SOURCE
-#endif
/* Enable GNU extensions on systems that have them. */
#ifndef _GNU_SOURCE
# undef _GNU_SOURCE
#endif
-/* Use GNU style printf and scanf. */
-#ifndef __USE_MINGW_ANSI_STDIO
-# undef __USE_MINGW_ANSI_STDIO
-#endif
/* Enable threading extensions on Solaris. */
#ifndef _POSIX_PTHREAD_SEMANTICS
# undef _POSIX_PTHREAD_SEMANTICS
@@ -80,12 +79,6 @@ 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__
@@ -102,27 +95,9 @@ dnl configure.ac when using autoheader 2.62.
test $ac_cv_safe_to_define___extensions__ = yes &&
AC_DEFINE([__EXTENSIONS__])
AC_DEFINE([_ALL_SOURCE])
- AC_DEFINE([_DARWIN_C_SOURCE])
AC_DEFINE([_GNU_SOURCE])
- AC_DEFINE([__USE_MINGW_ANSI_STDIO])
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
# gl_USE_SYSTEM_EXTENSIONS