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Diffstat (limited to 'gl/m4/extensions.m4')
| -rw-r--r-- | gl/m4/extensions.m4 | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/gl/m4/extensions.m4 b/gl/m4/extensions.m4 deleted file mode 100644 index e114a6f729..0000000000 --- a/gl/m4/extensions.m4 +++ /dev/null @@ -1,173 +0,0 @@ -# serial 15 -*- Autoconf -*- -# Enable extensions on systems that normally disable them. - -# Copyright (C) 2003, 2006-2016 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 -# Autoconf. Perhaps we can remove this once we can assume Autoconf -# 2.70 or later everywhere, but since Autoconf mutates rapidly -# enough in this area it's likely we'll need to redefine -# AC_USE_SYSTEM_EXTENSIONS for quite some time. - -# If autoconf reports a warning -# warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS -# or warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS -# the fix is -# 1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked -# but always AC_REQUIREd, -# 2) to ensure that for each occurrence of -# AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) -# or -# AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) -# the corresponding gnulib module description has 'extensions' among -# its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS -# invocation occurs in gl_EARLY, not in gl_INIT. - -# 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_ONCE([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.]) - 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], -[/* Enable extensions on AIX 3, Interix. */ -#ifndef _ALL_SOURCE -# undef _ALL_SOURCE -#endif -/* Enable general extensions on macOS. */ -#ifndef _DARWIN_C_SOURCE -# undef _DARWIN_C_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 specified by ISO/IEC TS 18661-5:2014. */ -#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__ -# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__ -#endif -/* Enable extensions specified by ISO/IEC TS 18661-1:2014. */ -#ifndef __STDC_WANT_IEC_60559_BFP_EXT__ -# undef __STDC_WANT_IEC_60559_BFP_EXT__ -#endif -/* Enable extensions specified by ISO/IEC TS 18661-2:2015. */ -#ifndef __STDC_WANT_IEC_60559_DFP_EXT__ -# undef __STDC_WANT_IEC_60559_DFP_EXT__ -#endif -/* Enable extensions specified by ISO/IEC TS 18661-4:2015. */ -#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__ -# undef __STDC_WANT_IEC_60559_FUNCS_EXT__ -#endif -/* Enable extensions specified by ISO/IEC TS 18661-3:2015. */ -#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__ -# undef __STDC_WANT_IEC_60559_TYPES_EXT__ -#endif -/* Enable extensions specified by ISO/IEC TR 24731-2:2010. */ -#ifndef __STDC_WANT_LIB_EXT2__ -# undef __STDC_WANT_LIB_EXT2__ -#endif -/* Enable extensions specified by ISO/IEC 24747:2009. */ -#ifndef __STDC_WANT_MATH_SPEC_FUNCS__ -# undef __STDC_WANT_MATH_SPEC_FUNCS__ -#endif -/* Enable extensions on HP NonStop. */ -#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__ -#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([_DARWIN_C_SOURCE]) - AC_DEFINE([_GNU_SOURCE]) - AC_DEFINE([_POSIX_PTHREAD_SEMANTICS]) - AC_DEFINE([__STDC_WANT_IEC_60559_ATTRIBS_EXT__]) - AC_DEFINE([__STDC_WANT_IEC_60559_BFP_EXT__]) - AC_DEFINE([__STDC_WANT_IEC_60559_DFP_EXT__]) - AC_DEFINE([__STDC_WANT_IEC_60559_FUNCS_EXT__]) - AC_DEFINE([__STDC_WANT_IEC_60559_TYPES_EXT__]) - AC_DEFINE([__STDC_WANT_LIB_EXT2__]) - AC_DEFINE([__STDC_WANT_MATH_SPEC_FUNCS__]) - 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 -# ------------------------ -# Enable extensions on systems that normally disable them, -# typically due to standards-conformance issues. -AC_DEFUN_ONCE([gl_USE_SYSTEM_EXTENSIONS], -[ - dnl Require this macro before AC_USE_SYSTEM_EXTENSIONS. - dnl gnulib does not need it. But if it gets required by third-party macros - dnl after AC_USE_SYSTEM_EXTENSIONS is required, autoconf 2.62..2.63 emit a - dnl warning: "AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS". - dnl Note: We can do this only for one of the macros AC_AIX, AC_GNU_SOURCE, - dnl AC_MINIX. If people still use AC_AIX or AC_MINIX, they are out of luck. - AC_REQUIRE([AC_GNU_SOURCE]) - - AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) -]) |