# 
# add_file "m4/externtemplate.m4"
# 
# patch "m4/externtemplate.m4"
#  from []
#    to [68df9a72ba32cce1ed7f781b19e07c36710f4f70]
# 
========================================================================
--- m4/externtemplate.m4	
+++ m4/externtemplate.m4	68df9a72ba32cce1ed7f781b19e07c36710f4f70
@@ -0,0 +1,23 @@
+dnl @synopsis AC_CXX_EXTERN_TEMPLATE
+dnl
+dnl tests for the presence of the gcc c++ extension
+dnl "extern template"
+dnl
+dnl @author Patrick Mauritz <address@hidden>
+dnl @version 2005-07-18
+dnl @license AllPermissive
+
+AC_DEFUN([AC_CXX_EXTERN_TEMPLATE],[
+AC_CACHE_CHECK(whether the compiler supports extern template,
+ac_cv_cxx_extern_template,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([template <typename T> void foo(T); extern template void foo<int>(int);],
+ [],
+ ac_cv_cxx_extern_template=yes, ac_cv_cxx_extern_template=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_extern_template" = yes; then
+  AC_DEFINE(HAVE_EXTERN_TEMPLATE,,[define if the compiler supports extern template])
+fi
+])