src: add buildall.bash

For new compile-only builder.

Change-Id: Ic374c582fcada761386fc852fdbdba814b4ac9e2
Reviewed-on: https://go-review.googlesource.com/9438Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>

src/buildall.bash

+#!/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 linux-amd64-compilesmoke 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
+
+# put linux, nacl first in the target list to get all the architectures up front.
+targets="$((ls runtime | sed -n 's/^rt0_\(.*\)_\(.*\)\.s/\1-\2/p'; echo linux-386-387) | sort | egrep -v android-arm | egrep "$pattern" | egrep 'linux|nacl')
+$(ls runtime | sed -n 's/^rt0_\(.*\)_\(.*\)\.s/\1-\2/p' | egrep -v 'android-arm|darwin-arm' | egrep "$pattern" | egrep -v 'linux|nacl')"
+
+./make.bash
+GOROOT="$(cd .. && pwd)"
+
+failed=false
+for target in $targets
+do
+    echo ""
+    echo "### Building $target"
+    export GOOS=$(echo $target | sed 's/-.*//')
+    export GOARCH=$(echo $target | sed 's/.*-//')
+    unset GO386
+    if [ "$GOARCH" = "387" ]; then
+        export GOARCH=386
+        export GO386=387
+    fi
+    if ! go build -a std; 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