#!/bin/bash
. $GVM_ROOT/scripts/functions

display_list() {
	echo
	display_message "gvm cross [os] [arch] - To install additional cross compilers"
	echo
	$LS_PATH $GOROOT/pkg | $GREP_PATH windows_
	$LS_PATH $GOROOT/pkg | $GREP_PATH darwin_
	$LS_PATH $GOROOT/pkg | $GREP_PATH linux_
	echo
	exit 1
}

which go &> /dev/null || display_fatal "Only available in versions after Go 1"

if [ ! -f "$GOROOT/pkg/tool/cross" ]; then
	display_message "Installing x86 and x86-64 commands"
	set -e
	for arch in 8 6; do
		    for cmd in a c g l; do
		            go tool dist install -v cmd/$arch$cmd
		    done
	done
	touch $GOROOT/pkg/tool/cross
fi

[ -z "$1" ] && display_list
export GOOS=$1
shift
[ -z "$1" ] && display_fatal "GOARCH is not specified"
export GOARCH=$1

if [ ! -d "$GOROOT/pkg/${GOOS}_${GOARCH}" ]; then
	if [ "$GOOS" = "windows" ]; then
		    export CGO_ENABLED=0
	fi

	cd $GOROOT/src
	go tool dist install -v pkg/runtime
	go install -v -a std
else
	display_message "Runtime library already installed for $GOOS $GOARCH"
fi