+++ /dev/null
-# ===========================================================================
-# http://autoconf-archive.cryp.to/ac_cxx_compile_stdcxx_0x.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-# AC_CXX_COMPILE_STDCXX_0X
-#
-# DESCRIPTION
-#
-# Check for baseline language coverage in the compiler for the C++0x
-# standard.
-#
-# LAST MODIFICATION
-#
-# 2008-04-17
-#
-# COPYLEFT
-#
-# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
-#
-# 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.
-
-AC_DEFUN([AC_CXX_COMPILE_STDCXX_0X], [
- AC_CACHE_CHECK(if g++ supports C++0x features without additional flags,
- ac_cv_cxx_compile_cxx0x_native,
- [AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([
- 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);],,
- ac_cv_cxx_compile_cxx0x_native=yes, ac_cv_cxx_compile_cxx0x_native=no)
- AC_LANG_RESTORE
- ])
-
- AC_CACHE_CHECK(if g++ supports C++0x features with -std=c++0x,
- ac_cv_cxx_compile_cxx0x_cxx,
- [AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS="$CXXFLAGS -std=c++0x"
- AC_TRY_COMPILE([
- 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);],,
- ac_cv_cxx_compile_cxx0x_cxx=yes, ac_cv_cxx_compile_cxx0x_cxx=no)
- CXXFLAGS="$ac_save_CXXFLAGS"
- AC_LANG_RESTORE
- ])
-
- AC_CACHE_CHECK(if g++ supports C++0x features with -std=gnu++0x,
- ac_cv_cxx_compile_cxx0x_gxx,
- [AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS="$CXXFLAGS -std=gnu++0x"
- AC_TRY_COMPILE([
- template <typename T>
- struct check
- {
- static_assert(sizeof(int) <= sizeof(T), "not big enough");
- };
-
- typedef check<check<bool>> right_angle_brackets;
-
- int a;
- decltype(a) b;
-
- typedef check<int> check_type;
- check_type c;
- check_type&& cr = static_cast<check_type&&>(c);],,
- ac_cv_cxx_compile_cxx0x_gxx=yes, ac_cv_cxx_compile_cxx0x_gxx=no)
- CXXFLAGS="$ac_save_CXXFLAGS"
- AC_LANG_RESTORE
- ])
-
- if test "$ac_cv_cxx_compile_cxx0x_native" = yes ||
- test "$ac_cv_cxx_compile_cxx0x_cxx" = yes ||
- test "$ac_cv_cxx_compile_cxx0x_gxx" = yes; then
- AC_DEFINE(HAVE_STDCXX_0X,,[Define if g++ supports C++0x features. ])
- else
- AC_MSG_ERROR([Could not find cxx0x support in g++])
- fi
-])
-
\ No newline at end of file