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Diffstat (limited to 'm4/ax_cxx_compile_stdcxx_11.m4')
| -rw-r--r-- | m4/ax_cxx_compile_stdcxx_11.m4 | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/m4/ax_cxx_compile_stdcxx_11.m4 b/m4/ax_cxx_compile_stdcxx_11.m4 deleted file mode 100644 index f6cf4a15..00000000 --- a/m4/ax_cxx_compile_stdcxx_11.m4 +++ /dev/null @@ -1,140 +0,0 @@ -# ============================================================================ -# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html -# ============================================================================ -# -# SYNOPSIS -# -# AX_CXX_COMPILE_STDCXX_11([ext|noext],[mandatory|optional]) -# -# DESCRIPTION -# -# Check for baseline language coverage in the compiler for the C++11 -# standard; if necessary, add switches to CXXFLAGS to enable support. -# -# The first argument, if specified, indicates whether you insist on an -# extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g. -# -std=c++11). If neither is specified, you get whatever works, with -# preference for an extended mode. -# -# The second argument, if specified 'mandatory' or if left unspecified, -# indicates that baseline C++11 support is required and that the macro -# should error out if no mode with that support is found. If specified -# 'optional', then configuration proceeds regardless, after defining -# HAVE_CXX11 if and only if a supporting mode is found. -# -# LICENSE -# -# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com> -# Copyright (c) 2012 Zack Weinberg <zackw@panix.com> -# Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu> -# -# Copying and distribution of this file, with or without modification, are -# permitted in any medium without royalty provided the copyright notice -# and this notice are preserved. This file is offered as-is, without any -# warranty. - -#serial 3 - -m4_define([_AX_CXX_COMPILE_STDCXX_11_testbody], [ - template <typename T> - struct check - { - static_assert(sizeof(int) <= sizeof(T), "not big enough"); - }; - - typedef check<check<bool>> right_angle_brackets; - - int a; - decltype(a) b; - - typedef check<int> check_type; - check_type c; - check_type&& cr = static_cast<check_type&&>(c); - - auto d = a; -]) - -AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [dnl - m4_if([$1], [], [], - [$1], [ext], [], - [$1], [noext], [], - [m4_fatal([invalid argument `$1' to AX_CXX_COMPILE_STDCXX_11])])dnl - m4_if([$2], [], [ax_cxx_compile_cxx11_required=true], - [$2], [mandatory], [ax_cxx_compile_cxx11_required=true], - [$2], [optional], [ax_cxx_compile_cxx11_required=false], - [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX_11])])dnl - AC_LANG_PUSH([C++])dnl - ac_success=no - AC_CACHE_CHECK(whether $CXX supports C++11 features by default, - ax_cv_cxx_compile_cxx11, - [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])], - [ax_cv_cxx_compile_cxx11=yes], - [ax_cv_cxx_compile_cxx11=no])]) - if test x$ax_cv_cxx_compile_cxx11 = xyes; then - ac_success=yes - fi - - restore_it="$CXXFLAGS" - m4_if([$1], [noext], [], [dnl - if test x$ac_success = xno; then - for switch in -std=gnu++11 -std=gnu++0x; do - cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch]) - AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch, - $cachevar, - [ac_save_CXXFLAGS="$CXXFLAGS" - CXXFLAGS="$CXXFLAGS $switch" - AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])], - [eval $cachevar=yes], - [eval $cachevar=no]) - CXXFLAGS="$ac_save_CXXFLAGS"]) - if eval test x\$$cachevar = xyes; then - CXXFLAGS="$CXXFLAGS" - c11switch="$switch" - ac_success=yes - break - fi - done - fi]) - - m4_if([$1], [ext], [], [dnl - if test x$ac_success = xno; then - for switch in -std=c++11 -std=c++0x; do - cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch]) - AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch, - $cachevar, - [ac_save_CXXFLAGS="$CXXFLAGS" - CXXFLAGS="$CXXFLAGS $switch" - AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])], - [eval $cachevar=yes], - [eval $cachevar=no]) - CXXFLAGS="$ac_save_CXXFLAGS"]) - if eval test x\$$cachevar = xyes; then - CXXFLAGS="$CXXFLAGS" - c11switch="$switch" - ac_success=yes - break - fi - done - fi]) - CXXFLAGS="$restore_it" - AC_SUBST([CXX11_SWITCH], ["$c11switch"]) - AC_LANG_POP([C++]) - if test x$ax_cxx_compile_cxx11_required = xtrue; then - if test x$ac_success = xno; then - AC_MSG_ERROR([*** A compiler with support for C++11 language features is required.]) - fi - else - if test x$ac_success = xno; then - HAVE_CXX11=0 - AC_MSG_NOTICE([No compiler with C++11 support was found]) - else - HAVE_CXX11=1 - AC_DEFINE(HAVE_CXX11,1, - [define if the compiler supports basic C++11 syntax]) - fi - AM_CONDITIONAL([HAVE_CXX11],[test "x$HAVE_CXX11" = "x1"]) - - AC_SUBST(HAVE_CXX11) - fi -]) - |