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builder.go
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builder.go
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// Copyright 2018 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// builder implements most of the actions for Bazel to compile and link
// go code. We use a single binary for most actions, since this reduces
// the number of inputs needed for each action and allows us to build
// multiple related files in a single action.
package main
import (
"log"
"os"
)
func main() {
log.SetFlags(0)
log.SetPrefix("builder: ")
args, err := readParamsFiles(os.Args[1:])
if err != nil {
log.Fatal(err)
}
if len(args) == 0 {
log.Fatalf("usage: %s verb options...", os.Args[0])
}
verb, rest := args[0], args[1:]
var action func(args []string) error
switch verb {
case "asm":
action = asm
case "compile":
action = compile
case "compilepkg":
action = compilePkg
case "cover":
action = cover
case "filterbuildid":
action = filterBuildID
case "gentestmain":
action = genTestMain
case "link":
action = link
case "gennogomain":
action = genNogoMain
case "pack":
action = pack
case "stdlib":
action = stdlib
default:
log.Fatalf("unknown action: %s", verb)
}
log.SetPrefix(verb + ": ")
if err := action(rest); err != nil {
log.Fatal(err)
}
}