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Work around bad use of autoconf interna

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Merge fix made by Andreas Schwab <schwab@linux-m68k.org>.  This change
had been in use by SUSE since 2008-07-03.
This commit is contained in:
Lars Müller 2010-01-18 11:49:01 +01:00
parent 3fb359aa56
commit 9e318129e0
1 changed files with 37 additions and 13 deletions
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50
lib/replace/autoconf-2.60.m4
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@ -181,32 +181,56 @@ AC_DEFUN([AC_PROG_CC_C99],
# typically due to standards-conformance issues.
m4_ifndef([AC_USE_SYSTEM_EXTENSIONS],[
AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS],
[
AC_BEFORE([$0], [AC_COMPILE_IFELSE])
AC_BEFORE([$0], [AC_RUN_IFELSE])
[AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
AC_REQUIRE([AC_GNU_SOURCE])
AC_REQUIRE([AC_AIX])
AC_REQUIRE([AC_MINIX])
AC_CHECK_HEADER([minix/config.h], [MINIX=yes], [MINIX=])
if test "$MINIX" = yes; then
AC_DEFINE([_POSIX_SOURCE], [1],
[Define to 1 if you need to in order for `stat' and other
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.])
fi
AH_VERBATIM([__EXTENSIONS__],
[/* Enable extensions on Solaris. */
[/* Enable extensions on AIX 3, Interix. */
#ifndef _ALL_SOURCE
# undef _ALL_SOURCE
#endif
/* Enable GNU extensions on systems that have them. */
#ifndef _GNU_SOURCE
# undef _GNU_SOURCE
#endif
/* Enable threading extensions on Solaris. */
#ifndef _POSIX_PTHREAD_SEMANTICS
# undef _POSIX_PTHREAD_SEMANTICS
#endif
/* Enable extensions on HP NonStop. */
#ifndef _TANDEM_SOURCE
# undef _TANDEM_SOURCE
#endif
/* Enable general extensions on Solaris. */
#ifndef __EXTENSIONS__
# undef __EXTENSIONS__
#endif
#ifndef _POSIX_PTHREAD_SEMANTICS
# undef _POSIX_PTHREAD_SEMANTICS
#endif])
])
AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
[ac_cv_safe_to_define___extensions__],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([
[AC_LANG_PROGRAM([[
# define __EXTENSIONS__ 1
AC_INCLUDES_DEFAULT])],
]AC_INCLUDES_DEFAULT])],
[ac_cv_safe_to_define___extensions__=yes],
[ac_cv_safe_to_define___extensions__=no])])
test $ac_cv_safe_to_define___extensions__ = yes &&
AC_DEFINE([__EXTENSIONS__])
AC_DEFINE([_ALL_SOURCE])
AC_DEFINE([_GNU_SOURCE])
AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
])
AC_DEFINE([_TANDEM_SOURCE])
])# AC_USE_SYSTEM_EXTENSIONS
])