glib: helped glib to find gettext on stage 0. See note!

The configure of glib uses $CPPFLAGS from environment for testing the
availability of libintl.h, so we need to export that.

base/glib/glib.conf

@@ -19,5 +19,17 @@ if ! atstage native; then
 	var_append configcache ' ' 'glib_cv_uscore=no'
 	var_append configcache ' ' 'ac_cv_func_posix_getpwuid_r=yes'
 	var_append configcache ' ' 'ac_cv_func_posix_getgrgid_r=yes'
+
+find-get-text() {
+	if pkginstalled -f gettext-stub; then
+		var_append CFLAGS ' ' "-I$root/$( pkgprefix includedir gettext-stub )"
+		var_append CPPFLAGS ' ' "-I$root/$( pkgprefix includedir gettext-stub )"
+		var_append LDLAGS ' ' "-L$root/$( pkgprefix libdir gettext-stub )"
+		export CFLAGS CPPFLAGS LDFLAGS
+	fi
+}
+	hook_add preconf 8 'find-get-text'
 fi
 hook_add preconf 9 'autoreconf -ivf'
+# we never want this file
+var_append INSTALL_WRAPPER_FILTER "|" "sed -e 's,.*/charset.alias,/tmp/x,'"