Commit 51f34e07 authored by Tiago Peixoto's avatar Tiago Peixoto
Browse files

Update python/boost/c++ autoconf m4 macros

parent c1d8a409
# ===========================================================================
# http://autoconf-archive.cryp.to/ax_boost_base.html
# http://www.gnu.org/software/autoconf-archive/ax_boost_base.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_BOOST_BASE([MINIMUM-VERSION])
# AX_BOOST_BASE([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
#
# DESCRIPTION
#
......@@ -23,41 +23,45 @@
#
# HAVE_BOOST
#
# LAST MODIFICATION
#
# 2008-04-12
#
# COPYLEFT
# LICENSE
#
# Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>
# Copyright (c) 2009 Peter Adolphs
#
# 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.
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 26
AC_DEFUN([AX_BOOST_BASE],
[
AC_ARG_WITH([boost],
AS_HELP_STRING([--with-boost@<:@=DIR@:>@], [use boost (default is yes) - it is possible to specify the root directory for boost (optional)]),
[
[AS_HELP_STRING([--with-boost@<:@=ARG@:>@],
[use Boost library from a standard location (ARG=yes),
from the specified location (ARG=<path>),
or disable it (ARG=no)
@<:@ARG=yes@:>@ ])],
[
if test "$withval" = "no"; then
want_boost="no"
want_boost="no"
elif test "$withval" = "yes"; then
want_boost="yes"
ac_boost_path=""
else
want_boost="yes"
want_boost="yes"
ac_boost_path="$withval"
fi
fi
],
[want_boost="yes"])
AC_ARG_WITH([boost-libdir],
AS_HELP_STRING([--with-boost-libdir=LIB_DIR],
[Force given directory for boost libraries. Note that this will overwrite library path detection, so use this parameter only if default library detection fails and you know exactly where your boost libraries are located.]),
[Force given directory for boost libraries. Note that this will override library path detection, so use this parameter only if default library detection fails and you know exactly where your boost libraries are located.]),
[
if test -d $withval
if test -d "$withval"
then
ac_boost_lib_path="$withval"
else
......@@ -68,33 +72,69 @@ AC_ARG_WITH([boost-libdir],
)
if test "x$want_boost" = "xyes"; then
boost_lib_version_req=ifelse([$1], ,1.20.0,$1)
boost_lib_version_req_shorten=`expr $boost_lib_version_req : '\([[0-9]]*\.[[0-9]]*\)'`
boost_lib_version_req_major=`expr $boost_lib_version_req : '\([[0-9]]*\)'`
boost_lib_version_req_minor=`expr $boost_lib_version_req : '[[0-9]]*\.\([[0-9]]*\)'`
boost_lib_version_req_sub_minor=`expr $boost_lib_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
if test "x$boost_lib_version_req_sub_minor" = "x" ; then
boost_lib_version_req_sub_minor="0"
fi
WANT_BOOST_VERSION=`expr $boost_lib_version_req_major \* 100000 \+ $boost_lib_version_req_minor \* 100 \+ $boost_lib_version_req_sub_minor`
AC_MSG_CHECKING(for boostlib >= $boost_lib_version_req)
succeeded=no
dnl first we check the system location for boost libraries
dnl this location ist chosen if boost libraries are installed with the --layout=system option
dnl or if you install boost with RPM
if test "$ac_boost_path" != ""; then
BOOST_LDFLAGS="-L$ac_boost_path/lib"
BOOST_CPPFLAGS="-I$ac_boost_path/include"
else
for ac_boost_path_tmp in /usr /usr/local /opt /opt/local ; do
if test -d "$ac_boost_path_tmp/include/boost" && test -r "$ac_boost_path_tmp/include/boost"; then
BOOST_LDFLAGS="-L$ac_boost_path_tmp/lib"
BOOST_CPPFLAGS="-I$ac_boost_path_tmp/include"
break;
fi
done
fi
boost_lib_version_req=ifelse([$1], ,1.20.0,$1)
boost_lib_version_req_shorten=`expr $boost_lib_version_req : '\([[0-9]]*\.[[0-9]]*\)'`
boost_lib_version_req_major=`expr $boost_lib_version_req : '\([[0-9]]*\)'`
boost_lib_version_req_minor=`expr $boost_lib_version_req : '[[0-9]]*\.\([[0-9]]*\)'`
boost_lib_version_req_sub_minor=`expr $boost_lib_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
if test "x$boost_lib_version_req_sub_minor" = "x" ; then
boost_lib_version_req_sub_minor="0"
fi
WANT_BOOST_VERSION=`expr $boost_lib_version_req_major \* 100000 \+ $boost_lib_version_req_minor \* 100 \+ $boost_lib_version_req_sub_minor`
AC_MSG_CHECKING(for boostlib >= $boost_lib_version_req)
succeeded=no
dnl On 64-bit systems check for system libraries in both lib64 and lib.
dnl The former is specified by FHS, but e.g. Debian does not adhere to
dnl this (as it rises problems for generic multi-arch support).
dnl The last entry in the list is chosen by default when no libraries
dnl are found, e.g. when only header-only libraries are installed!
libsubdirs="lib"
ax_arch=`uname -m`
case $ax_arch in
x86_64)
libsubdirs="lib64 libx32 lib lib64"
;;
ppc64|s390x|sparc64|aarch64|ppc64le)
libsubdirs="lib64 lib lib64 ppc64le"
;;
esac
dnl allow for real multi-arch paths e.g. /usr/lib/x86_64-linux-gnu. Give
dnl them priority over the other paths since, if libs are found there, they
dnl are almost assuredly the ones desired.
AC_REQUIRE([AC_CANONICAL_HOST])
libsubdirs="lib/${host_cpu}-${host_os} $libsubdirs"
case ${host_cpu} in
i?86)
libsubdirs="lib/i386-${host_os} $libsubdirs"
;;
esac
dnl first we check the system location for boost libraries
dnl this location ist chosen if boost libraries are installed with the --layout=system option
dnl or if you install boost with RPM
if test "$ac_boost_path" != ""; then
BOOST_CPPFLAGS="-I$ac_boost_path/include"
for ac_boost_path_tmp in $libsubdirs; do
if test -d "$ac_boost_path"/"$ac_boost_path_tmp" ; then
BOOST_LDFLAGS="-L$ac_boost_path/$ac_boost_path_tmp"
break
fi
done
elif test "$cross_compiling" != yes; then
for ac_boost_path_tmp in /usr /usr/local /opt /opt/local ; do
if test -d "$ac_boost_path_tmp/include/boost" && test -r "$ac_boost_path_tmp/include/boost"; then
for libsubdir in $libsubdirs ; do
if ls "$ac_boost_path_tmp/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
done
BOOST_LDFLAGS="-L$ac_boost_path_tmp/$libsubdir"
BOOST_CPPFLAGS="-I$ac_boost_path_tmp/include"
break;
fi
done
fi
dnl overwrite ld flags if we have required special directory with
dnl --with-boost-libdir parameter
......@@ -102,122 +142,144 @@ if test "x$want_boost" = "xyes"; then
BOOST_LDFLAGS="-L$ac_boost_lib_path"
fi
CPPFLAGS_SAVED="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
export CPPFLAGS
LDFLAGS_SAVED="$LDFLAGS"
LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
export LDFLAGS
AC_LANG_PUSH(C++)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@%:@include <boost/version.hpp>
]], [[
#if BOOST_VERSION >= $WANT_BOOST_VERSION
// Everything is okay
#else
# error Boost version is too old
#endif
]])],[
CPPFLAGS_SAVED="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
export CPPFLAGS
LDFLAGS_SAVED="$LDFLAGS"
LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
export LDFLAGS
AC_REQUIRE([AC_PROG_CXX])
AC_LANG_PUSH(C++)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@%:@include <boost/version.hpp>
]], [[
#if BOOST_VERSION >= $WANT_BOOST_VERSION
// Everything is okay
#else
# error Boost version is too old
#endif
]])],[
AC_MSG_RESULT(yes)
succeeded=yes
found_system=yes
],[
])
AC_LANG_POP([C++])
dnl if we found no boost with system layout we search for boost libraries
dnl built and installed without the --layout=system option or for a staged(not installed) version
if test "x$succeeded" != "xyes"; then
_version=0
if test "$ac_boost_path" != ""; then
if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
_version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
V_CHECK=`expr $_version_tmp \> $_version`
if test "$V_CHECK" = "1" ; then
_version=$_version_tmp
fi
VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
BOOST_CPPFLAGS="-I$ac_boost_path/include/boost-$VERSION_UNDERSCORE"
done
fi
else
for ac_boost_path in /usr /usr/local /opt /opt/local ; do
if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
_version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
V_CHECK=`expr $_version_tmp \> $_version`
if test "$V_CHECK" = "1" ; then
_version=$_version_tmp
best_path=$ac_boost_path
fi
done
fi
done
VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
BOOST_CPPFLAGS="-I$best_path/include/boost-$VERSION_UNDERSCORE"
if test "$ac_boost_lib_path" = ""
then
BOOST_LDFLAGS="-L$best_path/lib"
succeeded=yes
found_system=yes
],[
])
AC_LANG_POP([C++])
dnl if we found no boost with system layout we search for boost libraries
dnl built and installed without the --layout=system option or for a staged(not installed) version
if test "x$succeeded" != "xyes"; then
CPPFLAGS="$CPPFLAGS_SAVED"
LDFLAGS="$LDFLAGS_SAVED"
BOOST_CPPFLAGS=
BOOST_LDFLAGS=
_version=0
if test "$ac_boost_path" != ""; then
if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
_version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
V_CHECK=`expr $_version_tmp \> $_version`
if test "$V_CHECK" = "1" ; then
_version=$_version_tmp
fi
VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
BOOST_CPPFLAGS="-I$ac_boost_path/include/boost-$VERSION_UNDERSCORE"
done
dnl if nothing found search for layout used in Windows distributions
if test -z "$BOOST_CPPFLAGS"; then
if test -d "$ac_boost_path/boost" && test -r "$ac_boost_path/boost"; then
BOOST_CPPFLAGS="-I$ac_boost_path"
fi
fi
fi
else
if test "$cross_compiling" != yes; then
for ac_boost_path in /usr /usr/local /opt /opt/local ; do
if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
_version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
V_CHECK=`expr $_version_tmp \> $_version`
if test "$V_CHECK" = "1" ; then
_version=$_version_tmp
best_path=$ac_boost_path
fi
done
fi
done
VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
BOOST_CPPFLAGS="-I$best_path/include/boost-$VERSION_UNDERSCORE"
if test "$ac_boost_lib_path" = ""; then
for libsubdir in $libsubdirs ; do
if ls "$best_path/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
done
BOOST_LDFLAGS="-L$best_path/$libsubdir"
fi
fi
if test "x$BOOST_ROOT" != "x"; then
if test -d "$BOOST_ROOT" && test -r "$BOOST_ROOT" && test -d "$BOOST_ROOT/stage/lib" && test -r "$BOOST_ROOT/stage/lib"; then
version_dir=`expr //$BOOST_ROOT : '.*/\(.*\)'`
stage_version=`echo $version_dir | sed 's/boost_//' | sed 's/_/./g'`
stage_version_shorten=`expr $stage_version : '\([[0-9]]*\.[[0-9]]*\)'`
V_CHECK=`expr $stage_version_shorten \>\= $_version`
if test "x$BOOST_ROOT" != "x"; then
for libsubdir in $libsubdirs ; do
if ls "$BOOST_ROOT/stage/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
done
if test -d "$BOOST_ROOT" && test -r "$BOOST_ROOT" && test -d "$BOOST_ROOT/stage/$libsubdir" && test -r "$BOOST_ROOT/stage/$libsubdir"; then
version_dir=`expr //$BOOST_ROOT : '.*/\(.*\)'`
stage_version=`echo $version_dir | sed 's/boost_//' | sed 's/_/./g'`
stage_version_shorten=`expr $stage_version : '\([[0-9]]*\.[[0-9]]*\)'`
V_CHECK=`expr $stage_version_shorten \>\= $_version`
if test "$V_CHECK" = "1" -a "$ac_boost_lib_path" = "" ; then
AC_MSG_NOTICE(We will use a staged boost library from $BOOST_ROOT)
BOOST_CPPFLAGS="-I$BOOST_ROOT"
BOOST_LDFLAGS="-L$BOOST_ROOT/stage/lib"
fi
fi
fi
fi
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
export CPPFLAGS
LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
export LDFLAGS
AC_LANG_PUSH(C++)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@%:@include <boost/version.hpp>
]], [[
#if BOOST_VERSION >= $WANT_BOOST_VERSION
// Everything is okay
#else
# error Boost version is too old
#endif
]])],[
AC_MSG_RESULT(yes)
succeeded=yes
found_system=yes
],[
])
AC_LANG_POP([C++])
fi
if test "$succeeded" != "yes" ; then
if test "$_version" = "0" ; then
AC_MSG_ERROR([[We could not detect the boost libraries (version $boost_lib_version_req_shorten or higher). If you have a staged boost library (still not installed) please specify \$BOOST_ROOT in your environment and do not give a PATH to --with-boost option. If you are sure you have boost installed, then check your version number looking in <boost/version.hpp>. See http://randspringer.de/boost for more documentation.]])
else
AC_MSG_NOTICE([Your boost libraries seems to old (version $_version).])
fi
else
AC_SUBST(BOOST_CPPFLAGS)
AC_SUBST(BOOST_LDFLAGS)
AC_DEFINE(HAVE_BOOST,,[define if the Boost library is available])
fi
AC_MSG_NOTICE(We will use a staged boost library from $BOOST_ROOT)
BOOST_CPPFLAGS="-I$BOOST_ROOT"
BOOST_LDFLAGS="-L$BOOST_ROOT/stage/$libsubdir"
fi
fi
fi
fi
CPPFLAGS="$CPPFLAGS_SAVED"
LDFLAGS="$LDFLAGS_SAVED"
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
export CPPFLAGS
LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
export LDFLAGS
AC_LANG_PUSH(C++)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@%:@include <boost/version.hpp>
]], [[
#if BOOST_VERSION >= $WANT_BOOST_VERSION
// Everything is okay
#else
# error Boost version is too old
#endif
]])],[
AC_MSG_RESULT(yes)
succeeded=yes
found_system=yes
],[
])
AC_LANG_POP([C++])
fi
if test "$succeeded" != "yes" ; then
if test "$_version" = "0" ; then
AC_MSG_NOTICE([[We could not detect the boost libraries (version $boost_lib_version_req_shorten or higher). If you have a staged boost library (still not installed) please specify \$BOOST_ROOT in your environment and do not give a PATH to --with-boost option. If you are sure you have boost installed, then check your version number looking in <boost/version.hpp>. See http://randspringer.de/boost for more documentation.]])
else
AC_MSG_NOTICE([Your boost libraries seems to old (version $_version).])
fi
# execute ACTION-IF-NOT-FOUND (if present):
ifelse([$3], , :, [$3])
else
AC_SUBST(BOOST_CPPFLAGS)
AC_SUBST(BOOST_LDFLAGS)
AC_DEFINE(HAVE_BOOST,,[define if the Boost library is available])
# execute ACTION-IF-FOUND (if present):
ifelse([$2], , :, [$2])
fi
CPPFLAGS="$CPPFLAGS_SAVED"
LDFLAGS="$LDFLAGS_SAVED"
fi
])
......@@ -25,7 +25,7 @@
# LICENSE
#
# Copyright (c) 2008 Michael Tindal
# Copyright (c) 2013 Daniel Mullner <muellner@math.stanford.edu>
# Copyright (c) 2013 Daniel M"ullner <daniel@danifold.net>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
......@@ -53,39 +53,69 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 18
#serial 21
AC_DEFUN([AX_BOOST_PYTHON],
[AC_REQUIRE([AX_PYTHON_DEVEL])dnl
AC_REQUIRE([AX_BOOST_BASE])dnl
AC_LANG_PUSH([C++])
ax_boost_python_save_CPPFLAGS="$CPPFLAGS"
ax_boost_python_save_LDFLAGS="$LDFLAGS"
ax_boost_python_save_LIBS="$LIBS"
if test "x$PYTHON_CPPFLAGS" != "x"; then
CPPFLAGS="$PYTHON_CPPFLAGS $CPPFLAGS"
fi
# Versions of AX_PYTHON_DEVEL() before serial 18 provided PYTHON_LDFLAGS
# instead of PYTHON_LIBS, so this is just here for compatibility.
if test "x$PYTHON_LDFLAGS" != "x"; then
LDFLAGS="$PYTHON_LDFLAGS $LDFLAGS"
fi
# Note: Only versions of AX_PYTHON_DEVEL() since serial 18 provide PYTHON_LIBS
# instead of PYTHON_LDFLAGS.
if test "x$PYTHON_LIBS" != "x"; then
LIBS="$PYTHON_LIBS $LIBS"
fi
if test "x$BOOST_CPPFLAGS" != "x"; then
CPPFLAGS="$BOOST_CPPFLAGS $CPPFLAGS"
fi
if test "x$BOOST_LDFLAGS" != "x"; then
LDFLAGS="$BOOST_LDFLAGS $LDFLAGS"
fi
AC_CACHE_CHECK(whether the Boost::Python library is available,
ac_cv_boost_python,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
CPPFLAGS_SAVE="$CPPFLAGS"
if test x$PYTHON_CPPFLAGS != x; then
CPPFLAGS="$PYTHON_CPPFLAGS $CPPFLAGS"
fi
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <boost/python/module.hpp>
using namespace boost::python;
BOOST_PYTHON_MODULE(test) { throw "Boost::Python test."; }]],
[[return 0;]])],
ac_cv_boost_python=yes, ac_cv_boost_python=no)
AC_LANG_RESTORE
CPPFLAGS="$CPPFLAGS_SAVE"
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <boost/python/module.hpp>
BOOST_PYTHON_MODULE(test) { throw "Boost::Python test."; }]], [])],
ac_cv_boost_python=yes, ac_cv_boost_python=no)
])
if test "$ac_cv_boost_python" = "yes"; then
AC_DEFINE(HAVE_BOOST_PYTHON,,[define if the Boost::Python library is available])
ax_python_lib=boost_python
AC_ARG_WITH([boost-python],AS_HELP_STRING([--with-boost-python],[specify yes/no or the boost python library or suffix to use]),
[if test "x$with_boost_python" != "xno"; then
[if test "x$with_boost_python" != "xno" -a "x$with_boost_python" != "xyes"; then
ax_python_lib=$with_boost_python
ax_boost_python_lib=boost_python-$with_boost_python
fi])
BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`
for ax_lib in $ax_python_lib $ax_boost_python_lib boost_python `ls $BOOSTLIBDIR/libboost_python*.so* $BOOSTLIBDIR/libboost_python*.dylib* $BOOSTLIBDIR/libboost_python*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_python.*\)\.so.*$;\1;' -e 's;^lib\(boost_python.*\)\.dylib.*$;\1;' -e 's;^lib\(boost_python.*\)\.a.*$;\1;' `; do
AC_CHECK_LIB($ax_lib, exit, [BOOST_PYTHON_LIB=$ax_lib break], , [$PYTHON_LDFLAGS])
for ax_lib in $ax_python_lib $ax_boost_python_lib `ls $BOOSTLIBDIR/libboost_python*.so* $BOOSTLIBDIR/libboost_python*.dylib* $BOOSTLIBDIR/libboost_python*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_python.*\)\.so.*$;\1;' -e 's;^lib\(boost_python.*\)\.dylib.*$;\1;' -e 's;^lib\(boost_python.*\)\.a.*$;\1;' ` boost_python boost_python3; do
AS_VAR_PUSHDEF([ax_Lib], [ax_cv_lib_$ax_lib''_BOOST_PYTHON_MODULE])dnl
AC_CACHE_CHECK([whether $ax_lib is the correct library], [ax_Lib],
[LIBS="-l$ax_lib $ax_boost_python_save_LIBS $PYTHON_LIBS"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <boost/python/module.hpp>
BOOST_PYTHON_MODULE(test) { throw "Boost::Python test."; }]], [])],
[AS_VAR_SET([ax_Lib], [yes])],
[AS_VAR_SET([ax_Lib], [no])])])
AS_VAR_IF([ax_Lib], [yes], [BOOST_PYTHON_LIB=$ax_lib break], [])
AS_VAR_POPDEF([ax_Lib])dnl
done
AC_SUBST(BOOST_PYTHON_LIB)
fi
CPPFLAGS="$ax_boost_python_save_CPPFLAGS"
LDFLAGS="$ax_boost_python_save_LDFLAGS"
LIBS="$ax_boost_python_save_LIBS"
AC_LANG_POP([C++])
])dnl
# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
#
# DESCRIPTION
#
# Check for baseline language coverage in the compiler for the specified
# version of the C++ standard. If necessary, add switches to CXXFLAGS to
# enable support. VERSION may be '11' (for the C++11 standard) or '14'
# (for the C++14 standard).
#
# The second argument, if specified, indicates whether you insist on an
# extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
# -std=c++11). If neither is specified, you get whatever works, with
# preference for an extended mode.
#
# The third argument, if specified 'mandatory' or if left unspecified,
# indicates that baseline support for the specified C++ standard is
# required and that the macro should error out if no mode with that
# support is found. If specified 'optional', then configuration proceeds
# regardless, after defining HAVE_CXX${VERSION} 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>
# Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
# Copyright (c) 2015 Paul Norman <penorman@mac.com>
# Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
#
# 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 1
dnl This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
dnl (serial version number 13).
AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
m4_if([$1], [11], [],
[$1], [14], [],
[$1], [17], [m4_fatal([support for C++17 not yet implemented in AX_CXX_COMPILE_STDCXX])],
[m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
m4_if([$2], [], [],
[$2], [ext], [],
[$2], [noext], [],
[m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
[$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
[$3], [optional], [ax_cxx_compile_cxx$1_required=false],
[m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
AC_LANG_PUSH([C++])dnl
ac_success=no
AC_CACHE_CHECK(whether $CXX supports C++$1 features by default,
ax_cv_cxx_compile_cxx$1,
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
[ax_cv_cxx_compile_cxx$1=yes],
[ax_cv_cxx_compile_cxx$1=no])])
if test x$ax_cv_cxx_compile_cxx$1 = xyes; then
ac_success=yes
fi
m4_if([$2], [noext], [], [dnl
if test x$ac_success = xno; then
for switch in -std=gnu++$1 -std=gnu++0x; do
cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
$cachevar,
[ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $switch"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
[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([$2], [ext], [], [dnl
if test x$ac_success = xno; then
dnl HP's aCC needs +std=c++11 according to:
dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
dnl Cray's crayCC needs "-h std=c++11"
for switch in -std=c++$1 -std=c++0x +std=c++$1 "-h std=c++$1"; do
cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
$cachevar,
[ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $switch"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
[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_cxx$1_required = xtrue; then
if test x$ac_success = xno; then
AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
fi
else
if test x$ac_success = xno; then
HAVE_CXX$1=0
AC_MSG_NOTICE([No compiler with C++$1 support was found])
else
HAVE_CXX$1=1
AC_DEFINE(HAVE_CXX$1,1,
[define if the compiler supports basic C++$1 syntax])
fi
AC_SUBST(HAVE_CXX$1)
fi
])
dnl Test body for checking C++11 support
m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],