#!/usr/bin/env bash
# Copyright 2015 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

# Usage: buildall.sh [-e] [pattern]
#
# buildall.bash builds the standard library for all Go-supported
# architectures. It is used by the "all-compile" trybot builder,
# as a smoke test to quickly flag portability issues.
#
# Options:
#   -e: stop at first failure

if [ ! -f run.bash ]; then
	echo 'buildall.bash must be run from $GOROOT/src' 1>&2
	exit 1
fi

sete=false
if [ "$1" = "-e" ]; then
    sete=true
    shift
fi

if [ "$sete" = true ]; then
    set -e
fi

pattern="$1"
if [ "$pattern" = "" ]; then
    pattern=.
fi

./make.bash || exit 1
GOROOT="$(cd .. && pwd)"

gettargets() {
    ../bin/go tool dist list | sed -e 's|/|-|'
    echo linux-386-387
    echo linux-arm-arm5
}

selectedtargets() {
    gettargets | egrep -v 'android-arm|darwin-arm' | egrep "$pattern"
}

# put linux, nacl first in the target list to get all the architectures up front.
linux_nacl_targets() {
    selectedtargets | egrep 'linux|nacl' | sort
}

non_linux_nacl_targets() {
    selectedtargets | egrep -v 'linux|nacl' | sort
}

# Note words in $targets are separated by both newlines and spaces.
targets="$(linux_nacl_targets) $(non_linux_nacl_targets)"

failed=false
for target in $targets
do
    echo ""
    echo "### Building $target"
    export GOOS=$(echo $target | sed 's/-.*//')
    export GOARCH=$(echo $target | sed 's/.*-//')
    unset GO386 GOARM
    if [ "$GOARCH" = "arm5" ]; then
        export GOARCH=arm
        export GOARM=5
    fi
    if [ "$GOARCH" = "387" ]; then
        export GOARCH=386
        export GO386=387
    fi
    if ! "$GOROOT/bin/go" build -a std cmd; then
        failed=true
        if $sete; then
            exit 1
        fi
    fi
done

if [ "$failed" = "true" ]; then
    echo "" 1>&2
    echo "Build(s) failed." 1>&2
    exit 1
fi
