diff -r 000000000000 -r 6474c204b198 media/kiss_fft/update.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/kiss_fft/update.sh	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,34 @@
+# Usage: sh update.sh <upstream_src_directory>
+set -e
+
+if [ ! -d "$1" ]; then
+  echo "Usage: ./update.sh /path/to/kiss_fft" > 2
+  exit 1
+fi
+
+FILES="CHANGELOG \
+       COPYING \
+       README \
+       README.simd \
+       _kiss_fft_guts.h \
+       kiss_fft.c \
+       kiss_fft.h \
+       tools/kiss_fftr.c \
+       tools/kiss_fftr.h"
+
+for file in $FILES; do
+  cp "$1/$file" .
+done
+
+if [ -d "$1/.hg" ]; then
+  rev=$(cd "$1" && hg log --template='{node}' -r `hg identify -i`)
+fi
+
+if [ -n "$rev" ]; then
+  version=$rev
+  sed -i.bak -e "/The hg revision ID used was/ s/[0-9a-f]\{40\}\./$version./" README_MOZILLA
+  rm README_MOZILLA.bak
+else
+  echo "Remember to update README_MOZILLA with the version details."
+fi
+