GNOME_CXX_WARNINGS
GNOME_DEBUG_CHECK
-ALL_LINGUAS="bg ca cs da de el en_CA en_GB es et eu fi fr gl gu he hi hu id ja ko lt nb ne nl no pa pl pt_BR ru rw sk sq sr sr@Latn sv th tr uk wa zh_CN zh_TW"
+ALL_LINGUAS="bg ca cs da de el en_CA en_GB es et eu fi fr gl gu he hi hu id ja ko lt nb ne nl no pa pl pt pt_BR ro ru rw sk sq sr sr@Latn sv th tr uk wa zh_CN zh_TW"
AM_GLIB_GNU_GETTEXT
AC_MSG_ERROR([gconftool-2 executable not found in your path - should be installed with GConf])
fi
+dnl ================== portability checks ===========================================
+
+dnl for backtrace()
+AC_CHECK_HEADERS([execinfo.h])
+
dnl ================== ggv checks ===================================================
AC_ARG_WITH(gs-pkg,
[ --with-gs=dir Directory Where GhostScript package is installed.])