gocc/main.go
2022-08-17 18:30:45 +02:00

156 lines
3.6 KiB
Go

package main
import (
"errors"
"flag"
"fmt"
"os"
"os/exec"
"path/filepath"
"runtime"
"strconv"
"sync"
"time"
"git.milar.in/milarin/channel"
)
var ModulePath string
var ProjectName string
var (
OS = flag.String("os", "", "comma-separated list of operating systems to compile for (empty for all)")
Arch = flag.String("arch", "", "comma-separated list of architectures to compile for (empty for all)")
Silent = flag.Bool("s", false, "silent mode (no output)")
NoCompress = flag.Bool("c", false, "dont compress any executables")
NumThreads = flag.Int("t", runtime.NumCPU(), "amount of threads (0 = infinite)")
)
var Runner channel.Runner
func main() {
var err error
flag.Parse()
ModulePath, err = filepath.Abs(flag.Arg(0))
if err != nil {
panic(err)
}
ProjectName = filepath.Base(ModulePath)
if _, err := exec.LookPath("go"); err != nil {
ColorError.Fprintln(os.Stderr, "go not found in PATH. compilation not possible")
return
}
if !*NoCompress {
if _, err := exec.LookPath("upx"); err != nil {
ColorWarn.Fprintln(os.Stderr, "upx not found in PATH. file compression not possible")
*NoCompress = true
}
}
if err := FillCompileConfigs(); err != nil {
ColorError.Fprintln(os.Stderr, fmt.Errorf("target architectures could not be determined: %w", err))
return
}
if _, err := os.Stat(filepath.Join(ModulePath, "go.mod")); errors.Is(err, os.ErrNotExist) {
ColorError.Fprintf(os.Stderr, "no Go module found at '%s'\n", ModulePath)
return
}
ch := make(chan *CompileReport, len(CompileConfigs))
wg := new(sync.WaitGroup)
doneCh := make(chan struct{})
go Watch(ch, doneCh)
Runner = GetRunner()
start := time.Now()
for _, cfg := range CompileConfigs {
cfg := cfg
wg.Add(1)
go Runner.Run(func() { Compile(cfg, ch, wg) })
}
wg.Wait()
close(ch)
end := time.Now()
<-doneCh // wait for Watch
if !*Silent {
fmt.Printf("compilation took %s (using %s threads)\n", end.Sub(start), GetThreadCount())
}
}
func Compile(cfg *CompileConfig, ch chan<- *CompileReport, wg *sync.WaitGroup) {
filename := fmt.Sprintf("%s_%s_%s%s", ProjectName, cfg.OS, cfg.Arch, cfg.FileExt)
ch <- &CompileReport{Config: cfg, State: StateCompiling}
compileCmd := exec.Command("go", "build", "-o", filename)
compileCmd.Dir = ModulePath
if err := compileCmd.Start(); err != nil {
ch <- &CompileReport{Config: cfg, State: StateCompileError}
wg.Done()
return
}
if err := compileCmd.Wait(); err != nil {
ch <- &CompileReport{Config: cfg, State: StateCompileError}
wg.Done()
return
}
Compress(filename, cfg, ch, wg)
// uncomment for independent compile and compress tasks
/*
ch <- &CompileReport{Config: cfg, State: StateWaiting}
go Runner.Run(func() { Compress(filename, cfg, ch, wg) })
*/
}
func Compress(filename string, cfg *CompileConfig, ch chan<- *CompileReport, wg *sync.WaitGroup) {
defer wg.Done()
ch <- &CompileReport{Config: cfg, State: StateCompressing}
if !*NoCompress && cfg.Compress {
compressCmd := exec.Command("upx", "--best", filename)
compressCmd.Dir = ModulePath
if err := compressCmd.Start(); err != nil {
ch <- &CompileReport{Config: cfg, State: StateCompressError}
return
}
if err := compressCmd.Wait(); err != nil {
ch <- &CompileReport{Config: cfg, State: StateCompressError}
return
}
}
ch <- &CompileReport{Config: cfg, State: StateDone}
}
func GetRunner() channel.Runner {
if *NumThreads <= 0 {
return channel.NewUnlimitedRunner()
} else {
return channel.NewLimitedRunner(*NumThreads)
}
}
func GetThreadCount() string {
if *NumThreads == 0 {
return "infinitely many"
}
return strconv.Itoa(*NumThreads)
}