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build fixed

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This commit is contained in:
Marc Wäckerlin
2016-09-30 21:55:48 +00:00
parent a42adb3158
commit f96d509403
17 changed files with 1217 additions and 146 deletions
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100
ax_cxx_compile_stdcxx_11.m4
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@@ -4,12 +4,16 @@
#
# SYNOPSIS
#
# AX_REQUIRE_STDCXX_11
# AX_REQUIRE_STDCXX_14
# AX_CXX_COMPILE_STDCXX_11([ext|noext],[mandatory|optional])
# AX_CXX_COMPILE_STDCXX_14([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.
# or C++14 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.
@@ -131,3 +135,97 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [dnl
AC_SUBST(HAVE_CXX11)
fi
])
AC_DEFUN([AX_CXX_COMPILE_STDCXX_14], [dnl
m4_if([$1], [], [],
[$1], [ext], [],
[$1], [noext], [],
[m4_fatal([invalid argument `$1' to AX_CXX_COMPILE_STDCXX_14])])dnl
m4_if([$2], [], [ax_cxx_compile_cxx14_required=true],
[$2], [mandatory], [ax_cxx_compile_cxx14_required=true],
[$2], [optional], [ax_cxx_compile_cxx14_required=false],
[m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX_14])])dnl
AC_LANG_PUSH([C++])dnl
ac_success=no
AC_CACHE_CHECK(whether $CXX supports C++14 features by default,
ax_cv_cxx_compile_cxx14,
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
[ax_cv_cxx_compile_cxx14=yes],
[ax_cv_cxx_compile_cxx14=no])])
if test x$ax_cv_cxx_compile_cxx14 = xyes; then
ac_success=yes
fi
m4_if([$1], [noext], [], [dnl
if test x$ac_success = xno; then
for switch in -std=gnu++14 -std=gnu++0y; do
cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx14_$switch])
AC_CACHE_CHECK(whether $CXX supports C++14 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 $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++14 -std=c++0y; do
cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx14_$switch])
AC_CACHE_CHECK(whether $CXX supports C++14 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 $switch"
ac_success=yes
break
fi
done
fi])
AC_LANG_POP([C++])
if test x$ax_cxx_compile_cxx14_required = xtrue; then
if test x$ac_success = xno; then
AC_MSG_ERROR([*** A compiler with support for C++14 language features is required.])
fi
else
if test x$ac_success = xno; then
HAVE_CXX14=0
AC_MSG_NOTICE([No compiler with C++14 support was found])
AX_CXX_COMPILE_STDCXX_11([$1], [optional])
else
HAVE_CXX11=1
HAVE_CXX14=1
AC_DEFINE(HAVE_CXX14,1,
[define if the compiler supports basic C++14 syntax])
AC_DEFINE(HAVE_CXX11,1,
[define if the compiler supports basic C++14 syntax])
fi
AC_SUBST(HAVE_CXX11)
AC_SUBST(HAVE_CXX14)
fi
])
AC_DEFUN([AX_REQUIRE_STDCXX_11], [
if test x${HAVE_CXX11} != x1; then
AC_MSG_ERROR([*** A compiler with support for C++11 language features is required.])
fi
])
AC_DEFUN([AX_REQUIRE_STDCXX_14], [
if test x${HAVE_CXX14} != x1; then
AC_MSG_ERROR([*** A compiler with support for C++14 language features is required.])
fi
])