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configurecmd.go
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configurecmd.go
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// Copyright (C) 2017, 2018 Damon Revoe. All rights reserved.
// Use of this source code is governed by the MIT
// license, which can be found in the LICENSE file.
package main
import (
"errors"
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"path"
"strings"
"github.com/spf13/cobra"
)
// configureEnv is a cache of environment variables that is
// reused when configuring multiple packages.
type configureEnv struct {
envSansPkgConfigPath []string
origPkgConfigPath string // original value of PKG_CONFIG_PATH
buildDir string
pkgBuildDir map[string]string
}
const pkgConfigPathVarName = "PKG_CONFIG_PATH"
func dropEnvVar(env []string, i int) []string {
if i < len(env)-1 {
env[i] = env[len(env)-1]
}
return env[:len(env)-1]
}
func prepareConfigureEnv(buildDir string) *configureEnv {
ce := &configureEnv{
os.Environ(),
"",
buildDir,
map[string]string{}}
for i, v := range ce.envSansPkgConfigPath {
if strings.HasPrefix(v, pkgConfigPathVarName+"=") {
ce.envSansPkgConfigPath = dropEnvVar(
ce.envSansPkgConfigPath, i)
ce.origPkgConfigPath = strings.SplitN(v, "=", 2)[1]
break
}
}
return ce
}
func (ce *configureEnv) addPackageBuildDir(pkgName string) {
ce.pkgBuildDir[pkgName] = path.Join(ce.buildDir, pkgName)
}
func (ce *configureEnv) makeEnv(pd *packageDefinition) []string {
var configuredPackagePathames []string
for _, dep := range pd.allRequired {
depBuildDir, found := ce.pkgBuildDir[dep.PackageName]
if found {
configuredPackagePathames = append(
configuredPackagePathames, depBuildDir)
}
}
pkgConfigPath := strings.Join(configuredPackagePathames, ":")
if len(pkgConfigPath) == 0 {
if len(ce.origPkgConfigPath) == 0 {
return ce.envSansPkgConfigPath
}
pkgConfigPath = ce.origPkgConfigPath
} else if len(ce.origPkgConfigPath) > 0 {
pkgConfigPath += ":"
pkgConfigPath += ce.origPkgConfigPath
}
return append(ce.envSansPkgConfigPath,
pkgConfigPathVarName+"="+pkgConfigPath)
}
func configurePackage(installDir, pkgRootDir string, pd *packageDefinition,
cfgEnv *configureEnv, conftab *Conftab) error {
fmt.Println("[configure] " + pd.PackageName)
configurePathname := path.Join(pkgRootDir, pd.PackageName, "configure")
pkgBuildDir := path.Join(cfgEnv.buildDir, pd.PackageName)
err := os.MkdirAll(pkgBuildDir, os.FileMode(0775))
if err != nil {
return nil
}
configureArgs := conftab.getConfigureArgs(pd.PackageName)
configureArgs = append(configureArgs, "--quiet", "--prefix="+installDir)
configureCmd := exec.Command(configurePathname, configureArgs...)
configureCmd.Dir = pkgBuildDir
configureCmd.Stdout = os.Stdout
configureCmd.Stderr = os.Stderr
configureCmd.Env = cfgEnv.makeEnv(pd)
if err := configureCmd.Run(); err != nil {
return errors.New(configurePathname + ": " + err.Error())
}
return nil
}
func configurePackages(args []string) error {
ws, err := loadWorkspace()
if err != nil {
return err
}
pi, err := readPackageDefinitions(ws.wp)
if err != nil {
return err
}
buildDir := ws.buildDir()
cfgEnv := prepareConfigureEnv(buildDir)
if configuredPackageDirs, err := ioutil.ReadDir(buildDir); err == nil {
// Register packages that already exist
// in the build directory.
for _, dir := range configuredPackageDirs {
cfgEnv.addPackageBuildDir(dir.Name())
}
}
var selection packageDefinitionList
if len(args) > 0 {
selection, err = packageRangesToFlatSelection(pi, args)
} else {
selection, err = readPackageSelection(pi, ws.absPrivateDir)
}
if err != nil {
return err
}
for _, pd := range selection {
cfgEnv.addPackageBuildDir(pd.PackageName)
}
conftab, err := readConftab(
path.Join(ws.absPrivateDir, conftabFilename))
if err != nil {
return err
}
installDir := ws.installDir()
pkgRootDir := ws.generatedPkgRootDir()
for _, pd := range selection {
err := configurePackage(installDir, pkgRootDir, pd,
cfgEnv, conftab)
if err != nil {
return err
}
}
return nil
}
// configureCmd represents the configure command
var configureCmd = &cobra.Command{
Use: "configure [package_range...]",
Short: "Configure all selected packages " +
"or the specified package range",
Run: func(_ *cobra.Command, args []string) {
if err := configurePackages(args); err != nil {
log.Fatal(err)
}
},
}
func init() {
rootCmd.AddCommand(configureCmd)
configureCmd.Flags().SortFlags = false
addQuietFlag(configureCmd)
addWorkspaceDirFlag(configureCmd)
}