#!/bin/bash
set -e

# version check: https://sourceforge.net/projects/pmt/files/pngcrush/
PNGCRUSH_VERSION=1.8.13
PNGCRUSH_HASH="bac37d4b2be88d7e88aadcde9661beb3a513a90e7d26784f906c1e2da8ba332e"

cd /tmp
wget https://sourceforge.net/projects/pmt/files/pngcrush/$PNGCRUSH_VERSION/pngcrush-$PNGCRUSH_VERSION.tar.gz/download -O pngcrush-$PNGCRUSH_VERSION.tar.gz
sha256sum pngcrush-$PNGCRUSH_VERSION.tar.gz
echo "$PNGCRUSH_HASH pngcrush-$PNGCRUSH_VERSION.tar.gz" | sha256sum -c

tar zxf pngcrush-$PNGCRUSH_VERSION.tar.gz
cd pngcrush-$PNGCRUSH_VERSION
make && cp -f pngcrush /usr/local/bin
cd /
rm -fr /tmp/pngcrush-$PNGCRUSH_VERSION
rm /tmp/pngcrush-$PNGCRUSH_VERSION.tar.gz