100 lines
2.4 KiB
Go
100 lines
2.4 KiB
Go
/*
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* Copyright (c) 2022 The GoPlus Authors (goplus.org). All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package preprocessor
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import (
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"github.com/goplus/llgo/xtool/clang/pathutil"
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)
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const (
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DbgFlagExecCmd = 1 << iota
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DbgFlagAll = DbgFlagExecCmd
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)
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var (
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debugExecCmd bool
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)
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func SetDebug(flags int) {
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debugExecCmd = (flags & DbgFlagExecCmd) != 0
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}
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// -----------------------------------------------------------------------------
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type Config struct {
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Compiler string // default: clang
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PPFlag string // default: -E
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BaseDir string // base of include searching directory, should be absolute path
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IncludeDirs []string
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Defines []string
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Flags []string
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}
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func Do(infile, outfile string, conf *Config) (err error) {
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if infile, err = filepath.Abs(infile); err != nil {
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return
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}
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if outfile, err = filepath.Abs(outfile); err != nil {
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return
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}
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if conf == nil {
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conf = new(Config)
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}
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base := conf.BaseDir
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if base == "" {
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if base, err = os.Getwd(); err != nil {
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return
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}
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}
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compiler := conf.Compiler
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if compiler == "" {
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compiler = "clang"
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}
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ppflag := conf.PPFlag
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if ppflag == "" {
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ppflag = "-E"
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}
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n := 4 + len(conf.Flags) + len(conf.IncludeDirs) + len(conf.Defines)
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args := make([]string, 3, n)
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args[0] = ppflag
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args[1], args[2] = "-o", outfile
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args = append(args, conf.Flags...)
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for _, def := range conf.Defines {
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args = append(args, "-D"+def)
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}
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for _, inc := range conf.IncludeDirs {
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args = append(args, "-I"+pathutil.Canonical(base, inc))
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}
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args = append(args, infile)
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if debugExecCmd {
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log.Println("==> runCmd:", compiler, args)
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}
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cmd := exec.Command(compiler, args...)
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cmd.Dir = filepath.Dir(infile)
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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return cmd.Run()
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}
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// -----------------------------------------------------------------------------
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