old-cross-binutils/config/extensions.m4
Paolo Bonzini c779bab85b 2008-03-27 Paolo Bonzini <bonzini@gnu.org>
* Makefile.tpl (PICFLAG, PICFLAG_FOR_TARGET): Remove.
	* Makefile.in: Regenerate.

config:
2008-03-27  Paolo Bonzini  <bonzini@gnu.org>

	* extensions.m4: New.

2008-03-27  Paolo Bonzini  <bonzini@gnu.org>

	* mh-armpic: Remove.
	* mh-i370pic: Remove.
	* mh-m68kpic: Remove.
	* mh-ppcpic: Remove.
	* mh-sparcpic: Remove.
	* mh-ia64pic: Remove.
	* mh-papic: Remove.
	* mh-s390pic: Remove.
	* mh-x86pic: Remove.

libiberty:
2008-03-27  Paolo Bonzini  <bonzini@gnu.org>

	* configure.ac (frags): Don't set, use frag instead.
	(PICFLAG): Set here and substitute.
	* Makefile.in (PICFLAG): Substitute from autoconf.
	* configure: Regenerate.
2008-03-27 14:16:55 +00:00

76 lines
2.6 KiB
Text

# serial 5 -*- Autoconf -*-
# Enable extensions on systems that normally disable them.
# Copyright (C) 2003, 2006, 2007 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 CVS
# Autoconf. Perhaps we can remove this once we can assume Autoconf
# 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.
# AC_USE_SYSTEM_EXTENSIONS
# ------------------------
# 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
# cause problems on some platforms (such as __EXTENSIONS__).
AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS],
[AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
AC_CHECK_HEADER([minix/config.h], [MINIX=yes], [MINIX=])
if test "$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 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
])
AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
[ac_cv_safe_to_define___extensions__],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([
# define __EXTENSIONS__ 1
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