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dnl file : m4/cxx11.m4
dnl copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
dnl license : GNU GPL v2; see accompanying LICENSE file
dnl
dnl CXX11(MACRO, DESCRIPTION)
dnl
dnl Check if we are compiling in the C++11 mode. If we are, define MACRO as
dnl both a macro and conditional as well as set the cxx11 variable to 'yes'.
dnl
AC_DEFUN([CXX11],
[
cxx11=no
AC_MSG_CHECKING([whether we are in C++11 mode])
CXX_LIBTOOL_LINK_IFELSE(
AC_LANG_SOURCE([[
#include <memory>
int
main ()
{
std::shared_ptr<int> p (new int (10));
*p = 11;
}
]]),
[cxx11=yes])
if test x"$cxx11" = xyes; then
AC_MSG_RESULT([yes])
AC_DEFINE([$1], [1], [$2])
else
AC_MSG_RESULT([no])
fi
AM_CONDITIONAL([$1], [test x$cxx11 = xyes])
])dnl
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