-[AC_DIAGNOSE([obsolete],[Instead of using `AC_LANG', `AC_LANG_SAVE', and `AC_LANG_RESTORE',
-you should use `AC_LANG_PUSH' and `AC_LANG_POP'.])dnl
-AC_LANG_SAVE
- AC_LANG([C++])
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[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_PUSH([C++])
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[namespace Outer { namespace Inner { int i = 0; }}]], [[using namespace Outer::Inner; return i;]])],
+ [ac_cv_cxx_namespaces=yes],[ac_cv_cxx_namespaces=no])