diff options
Diffstat (limited to 'gnulib-m4/extensions.m4')
| -rw-r--r-- | gnulib-m4/extensions.m4 | 61 |
1 files changed, 18 insertions, 43 deletions
diff --git a/gnulib-m4/extensions.m4 b/gnulib-m4/extensions.m4 index 35bc49c..7d9458a 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 |