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livetrax/libs/sigc++2/scripts/cxx_std.m4
Doug McLain b49ae6eaf3 Add sigc 2.2.2
git-svn-id: svn://localhost/ardour2/branches/3.0@3437 d708f5d6-7413-0410-9779-e7cbd77b26cf
2008-06-02 21:54:56 +00:00

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cv_cxx_has_namespace_std
## SIGC_CXX_HAS_NAMESPACE_STD()
##
## Test whether libstdc++ declares namespace std. For safety,
## also check whether several randomly selected STL symbols
## are available in namespace std.
##
## On success, #define SIGC_HAVE_NAMESPACE_STD to 1.
##
AC_DEFUN([SIGC_CXX_HAS_NAMESPACE_STD],
[
AC_CACHE_CHECK(
[whether C++ library symbols are declared in namespace std],
[sigc_cv_cxx_has_namespace_std],
[
AC_TRY_COMPILE(
[
#include <algorithm>
#include <iterator>
#include <iostream>
#include <string>
],[
using std::min;
using std::find;
using std::copy;
using std::bidirectional_iterator_tag;
using std::string;
using std::istream;
using std::cout;
],
[sigc_cv_cxx_has_namespace_std="yes"],
[sigc_cv_cxx_has_namespace_std="no"]
)
])
if test "x${sigc_cv_cxx_has_namespace_std}" = "xyes"; then
{
AC_DEFINE([SIGC_HAVE_NAMESPACE_STD],[1], [Defined when the libstdc++ declares the std-namespace])
}
fi
])
## SIGC_CXX_HAS_SUN_REVERSE_ITERATOR()
##
## Check for Sun libCstd style std::reverse_iterator, which demands more than just one template parameter.
## and #define SIGC_HAVE_SUN_REVERSE_ITERATOR if found.
##
AC_DEFUN([SIGC_CXX_HAS_SUN_REVERSE_ITERATOR],
[
AC_REQUIRE([SIGC_CXX_HAS_NAMESPACE_STD])
AC_CACHE_CHECK(
[for non-standard Sun libCstd reverse_iterator],
[sigc_cv_cxx_has_sun_reverse_iterator],
[
AC_TRY_COMPILE(
[
#include <iterator>
#ifdef SIGC_HAVE_NAMESPACE_STD
using namespace std;
#endif
],[
typedef reverse_iterator<char*,random_access_iterator_tag,char,char&,char*,int> ReverseIter;
],
[sigc_cv_cxx_has_sun_reverse_iterator="yes"],
[sigc_cv_cxx_has_sun_reverse_iterator="no"]
)
])
if test "x${sigc_cv_cxx_has_sun_reverse_iterator}" = "xyes"; then
{
AC_DEFINE([SIGC_HAVE_SUN_REVERSE_ITERATOR],[1])
}
fi
])