diff -urN /usr/ports/multimedia/libvpx/files/patch-build_make_rtcd.sh ./files/patch-build_make_rtcd.sh
--- /usr/ports/multimedia/libvpx/files/patch-build_make_rtcd.sh	1970-01-01 01:00:00.000000000 +0100
+++ ./files/patch-build_make_rtcd.sh	2012-06-24 13:13:47.000000000 +0200
@@ -0,0 +1,9 @@
+--- build/make/rtcd.sh.orig	2012-06-24 13:12:00.000000000 +0200
++++ build/make/rtcd.sh	2012-06-24 13:13:01.000000000 +0200
+@@ -1,5 +1,6 @@
+ #!/bin/sh
+ self=$0
++LANG=C
+ 
+ usage() {
+   cat <<EOF >&2