WTF NPAPI extension. Early draft.

tools/nixysa/third_party/gflags-1.0/m4/namespaces.m4

Index: tools/nixysa/third_party/gflags-1.0/m4/namespaces.m4
===================================================================
--- tools/nixysa/third_party/gflags-1.0/m4/namespaces.m4	(revision 0)
+++ tools/nixysa/third_party/gflags-1.0/m4/namespaces.m4	(revision 0)
@@ -0,0 +1,15 @@
+# Checks whether the compiler implements namespaces
+AC_DEFUN([AC_CXX_NAMESPACES],
+ [AC_CACHE_CHECK(whether the compiler implements namespaces,
+                 ac_cv_cxx_namespaces,
+                 [AC_LANG_SAVE
+                  AC_LANG_CPLUSPLUS
+                  AC_TRY_COMPILE([namespace Outer {
+                                    namespace Inner { int i = 0; }}],
+                                 [using namespace Outer::Inner; return i;],
+                                 ac_cv_cxx_namespaces=yes,
+                                 ac_cv_cxx_namespaces=no)
+                  AC_LANG_RESTORE])
+  if test "$ac_cv_cxx_namespaces" = yes; then
+    AC_DEFINE(HAVE_NAMESPACES, 1, [define if the compiler implements namespaces])
+  fi])