AH_BOTTOM([#include <pref.h>])
-AC_CONFIG_FILES([Makefile po/Makefile.in m4/Makefile intl/Makefile
+dnl This is needed otherwise --with-included-gettext fails
+AH_BOTTOM([#include <locale.h>])
+
+AC_CONFIG_FILES([Makefile po/Makefile.in m4/Makefile intl/Makefile
lib/Makefile lib/julcal/Makefile lib/misc/Makefile
lib/dcdflib/Makefile doc/Makefile src/Makefile
config/Makefile tests/Makefile])