go cross compile/update helper script

update_go.sh

#!/bin/bash

set -e

cd /opt/go/src/
echo "### UPDATING SOURCE"
hg pull
hg update -C release

echo "### BUILDING NATIVE TOOLCHAIN"
CGO_ENABLE=1 ./all.bash

echo "### BUILDING TOOLCHAIN: linux/i386"
GOOS=linux GOARCH=386 CGO_ENABLED=0 ./make.bash --no-clean

echo "### BUILDING TOOLCHAIN: linux/arm"
GOOS=linux GOARCH=arm CGO_ENABLED=0 ./make.bash --no-clean

echo "### BUILDING TOOLCHAIN: windows/amd64"
GOOS=windows GOARCH=amd64 CGO_ENABLED=0 ./make.bash --no-clean

echo "### BUILDING TOOLCHAIN: windows/i386"
GOOS=windows GOARCH=386 CGO_ENABLED=0 ./make.bash --no-clean

echo "### UPDATING TIMESTAMPS (GO FIXES)"
find /opt/go/pkg/ -print0 |xargs -0r touch
go install std

cd ~
export GOPATH=~/go
go get code.google.com/p/go.tools/cmd/...

echo "### SUCCESS"