diff --git a/sys-devel/libtool/files/2.2.6a/libtool-2.2.6a-tests-locale.patch b/sys-devel/libtool/files/2.2.6a/libtool-2.2.6a-tests-locale.patch
new file mode 100644
--- /dev/null
+++ b/sys-devel/libtool/files/2.2.6a/libtool-2.2.6a-tests-locale.patch
@@ -0,0 +1,12 @@
+Index: libtool-2.2.6/tests/localization.at
+===================================================================
+--- libtool-2.2.6.orig/tests/localization.at
++++ libtool-2.2.6/tests/localization.at
+@@ -47,6 +47,7 @@ mv -f stdout expected-stdout
+ mv -f stderr expected-stderr
+ AT_CHECK([$LIBTOOL --mode=compile --tag=CC $CC $CPPFLAGS $CFLAGS -c a.c || exit 1],
+ 	 [1], [stdout], [stderr])
++AT_CHECK([grep LC_ALL stdout stderr && exit 77], [1])
+ AT_CHECK([diff expected-stderr stderr])
+ LTBASE=`$ECHO "$LIBTOOL" | sed 's,^.*/,,'`
+ AT_CHECK([grep -v "^$LTBASE: compile" stdout | diff expected-stdout -])