From ab21cfc255df69de8052b3845fd55fe8e180bcaa Mon Sep 17 00:00:00 2001
From: Mario Fetka <mario.fetka@gmail.com>
Date: Sun, 10 Mar 2013 11:23:13 +0100
Subject: [PATCH] add check for older verison of imagemagic about convert matte
 change

---
 lib/builder-utils.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/builder-utils.sh b/lib/builder-utils.sh
index 1659576..3b0226a 100644
--- a/lib/builder-utils.sh
+++ b/lib/builder-utils.sh
@@ -192,8 +192,13 @@ convert_image() {
   $OUTPUT_DIR/removed_black.png
   
   # create the matte
+  if [ `convert | grep Version | awk '{print $3}' | sed "s/-.*//" | sed "s/\.//g"` -le 670 ] ; then
+  convert $OUTPUT_DIR/removed_black.png -channel matte -separate +matte \
+  $OUTPUT_DIR/matte.png
+  else
   convert $OUTPUT_DIR/removed_black.png -channel matte -negate -separate +matte \
   $OUTPUT_DIR/matte.png
+  fi
   
   # negate the colors
   convert $OUTPUT_DIR/matte.png -negate -blur 0x1 \