Squashed 'third_party/ctemplate/' content from commit 6742f62
Change-Id: I828e4e4c906f13ba19944d78a8a78652b62949af
git-subtree-dir: third_party/ctemplate
git-subtree-split: 6742f6233db12f545e90baa8f34f5c29c4eb396a
diff --git a/m4/namespaces.m4 b/m4/namespaces.m4
new file mode 100644
index 0000000..d78dbe4
--- /dev/null
+++ b/m4/namespaces.m4
@@ -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])