echo 'Creating brew-patch.diff'
cat << EOF >> brew-patch.diff
diff --git a/configure.ac b/configure.ac
index f54bb92..84ab467 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_INIT([cuetools], [1.4.0], [svend@ciffer.net])
-AM_INIT_AUTOMAKE([-Wall -Werror foreign])
+AM_INIT_AUTOMAKE([-Wall -Werror -Wno-extra-portability foreign])
 AC_PROG_CC
 AC_PROG_INSTALL
 AC_PROG_RANLIB
EOF