diff options
Diffstat (limited to 'third_party/glog/m4/stl_namespace.m4')
| -rw-r--r-- | third_party/glog/m4/stl_namespace.m4 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/third_party/glog/m4/stl_namespace.m4 b/third_party/glog/m4/stl_namespace.m4 new file mode 100644 index 000000000000..989ad80696a3 --- /dev/null +++ b/third_party/glog/m4/stl_namespace.m4 @@ -0,0 +1,25 @@ +# We check what namespace stl code like vector expects to be executed in + +AC_DEFUN([AC_CXX_STL_NAMESPACE], + [AC_CACHE_CHECK( + what namespace STL code is in, + ac_cv_cxx_stl_namespace, + [AC_REQUIRE([AC_CXX_NAMESPACES]) + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + AC_TRY_COMPILE([#include <vector>], + [vector<int> t; return 0;], + ac_cv_cxx_stl_namespace=none) + AC_TRY_COMPILE([#include <vector>], + [std::vector<int> t; return 0;], + ac_cv_cxx_stl_namespace=std) + AC_LANG_RESTORE]) + if test "$ac_cv_cxx_stl_namespace" = none; then + AC_DEFINE(STL_NAMESPACE,, + [the namespace where STL code like vector<> is defined]) + fi + if test "$ac_cv_cxx_stl_namespace" = std; then + AC_DEFINE(STL_NAMESPACE,std, + [the namespace where STL code like vector<> is defined]) + fi +]) |