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goinstall: use go/make package to scan and build packages

Browse Source 
R=rsc, n13m3y3r, kevlar
CC=golang-dev
https://golang.org/cl/4515180
This commit is contained in:
Andrew Gerrand 2011-06-15 13:28:35 +10:00
parent 414da2e4a3
commit db5a4ffc2a
11 changed files with 214 additions and 644 deletions
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18
src/cmd/goinstall/Makefile
View File

@ -8,23 +8,5 @@ TARG=goinstall
GOFILES=\
download.go\
main.go\
make.go\
parse.go\
path.go\
syslist.go\
CLEANFILES+=syslist.go
include ../../Make.cmd
syslist.go:
echo '// Generated automatically by make.' >$@
echo 'package main' >>$@
echo 'const goosList = "$(GOOS_LIST)"' >>$@
echo 'const goarchList = "$(GOARCH_LIST)"' >>$@
test:
gotest
testshort:
gotest -test.short

2
src/cmd/goinstall/doc.go
View File

@ -15,7 +15,9 @@ Flags and default settings:
-a=false install all previously installed packages
-clean=false clean the package directory before installing
-dashboard=true tally public packages on godashboard.appspot.com
-install=true build and install the package and its dependencies
-log=true log installed packages to $GOROOT/goinstall.log for use by -a
-nuke=false remove the target object and clean before installing
-u=false update already-downloaded packages
-v=false verbose operation

68
src/cmd/goinstall/main.go
View File

@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Experimental Go package installer; see doc.go.
package main
import (
@ -11,6 +9,7 @@ import (
"exec"
"flag"
"fmt"
"go/build"
"go/token"
"io/ioutil"
"os"
@ -39,7 +38,9 @@ var (
reportToDashboard = flag.Bool("dashboard", true, "report public packages at "+dashboardURL)
logPkgs = flag.Bool("log", true, "log installed packages to $GOROOT/goinstall.log for use by -a")
update = flag.Bool("u", false, "update already-downloaded packages")
doInstall = flag.Bool("install", true, "build and install")
clean = flag.Bool("clean", false, "clean the package directory before installing")
nuke = flag.Bool("nuke", false, "clean the package directory and target before installing")
verbose = flag.Bool("v", false, "verbose")
)
@ -160,66 +161,83 @@ func install(pkg, parent string) {
fmt.Fprintf(os.Stderr, "\t%s\n", pkg)
os.Exit(2)
}
visit[pkg] = visiting
parents[pkg] = parent
vlogf("%s: visit\n", pkg)
visit[pkg] = visiting
defer func() {
visit[pkg] = done
}()
// Check whether package is local or remote.
// If remote, download or update it.
proot, pkg, err := findPackageRoot(pkg)
tree, pkg, err := build.FindTree(pkg)
// Don't build the standard library.
if err == nil && proot.goroot && isStandardPath(pkg) {
if err == nil && tree.Goroot && isStandardPath(pkg) {
if parent == "" {
errorf("%s: can not goinstall the standard library\n", pkg)
} else {
vlogf("%s: skipping standard library\n", pkg)
}
visit[pkg] = done
return
}
// Download remote packages if not found or forced with -u flag.
remote := isRemote(pkg)
if remote && (err == ErrPackageNotFound || (err == nil && *update)) {
if remote && (err == build.ErrNotFound || (err == nil && *update)) {
vlogf("%s: download\n", pkg)
err = download(pkg, proot.srcDir())
err = download(pkg, tree.SrcDir())
}
if err != nil {
errorf("%s: %v\n", pkg, err)
visit[pkg] = done
return
}
dir := filepath.Join(proot.srcDir(), pkg)
dir := filepath.Join(tree.SrcDir(), pkg)
// Install prerequisites.
dirInfo, err := scanDir(dir, parent == "")
dirInfo, err := build.ScanDir(dir, parent == "")
if err != nil {
errorf("%s: %v\n", pkg, err)
visit[pkg] = done
return
}
if len(dirInfo.goFiles) == 0 {
if len(dirInfo.GoFiles) == 0 {
errorf("%s: package has no files\n", pkg)
visit[pkg] = done
return
}
for _, p := range dirInfo.imports {
for _, p := range dirInfo.Imports {
if p != "C" {
install(p, pkg)
}
}
if errors {
return
}
// Install this package.
if !errors {
isCmd := dirInfo.pkgName == "main"
if err := domake(dir, pkg, proot, isCmd); err != nil {
errorf("installing: %v\n", err)
} else if remote && *logPkgs {
// mark package as installed in $GOROOT/goinstall.log
logPackage(pkg)
script, err := build.Build(tree, pkg, dirInfo)
if err != nil {
errorf("%s: install: %v\n", pkg, err)
return
}
if *nuke {
vlogf("%s: nuke\n", pkg)
script.Nuke()
} else if *clean {
vlogf("%s: clean\n", pkg)
script.Clean()
}
if *doInstall {
if script.Stale() {
vlogf("%s: install\n", pkg)
if err := script.Run(); err != nil {
errorf("%s: install: %v\n", pkg, err)
return
}
} else {
vlogf("%s: install: up-to-date\n", pkg)
}
}
visit[pkg] = done
if remote {
// mark package as installed in $GOROOT/goinstall.log
logPackage(pkg)
}
}

168
src/cmd/goinstall/make.go
View File

@ -1,168 +0,0 @@
// Copyright 2010 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.
// Run "make install" to build package.
package main
import (
"bytes"
"os"
"path/filepath"
"template"
)
// domake builds the package in dir.
// domake generates a standard Makefile and passes it
// to make on standard input.
func domake(dir, pkg string, root *pkgroot, isCmd bool) (err os.Error) {
makefile, err := makeMakefile(dir, pkg, root, isCmd)
if err != nil {
return err
}
cmd := []string{"bash", "gomake", "-f-"}
if *clean {
cmd = append(cmd, "clean")
}
cmd = append(cmd, "install")
return run(dir, makefile, cmd...)
}
// makeMakefile computes the standard Makefile for the directory dir
// installing as package pkg. It includes all *.go files in the directory
// except those in package main and those ending in _test.go.
func makeMakefile(dir, pkg string, root *pkgroot, isCmd bool) ([]byte, os.Error) {
if !safeName(pkg) {
return nil, os.ErrorString("unsafe name: " + pkg)
}
targ := pkg
targDir := root.pkgDir()
if isCmd {
// use the last part of the package name for targ
_, targ = filepath.Split(pkg)
targDir = root.binDir()
}
dirInfo, err := scanDir(dir, isCmd)
if err != nil {
return nil, err
}
cgoFiles := dirInfo.cgoFiles
isCgo := make(map[string]bool, len(cgoFiles))
for _, file := range cgoFiles {
if !safeName(file) {
return nil, os.ErrorString("bad name: " + file)
}
isCgo[file] = true
}
goFiles := make([]string, 0, len(dirInfo.goFiles))
for _, file := range dirInfo.goFiles {
if !safeName(file) {
return nil, os.ErrorString("unsafe name: " + file)
}
if !isCgo[file] {
goFiles = append(goFiles, file)
}
}
oFiles := make([]string, 0, len(dirInfo.cFiles)+len(dirInfo.sFiles))
cgoOFiles := make([]string, 0, len(dirInfo.cFiles))
for _, file := range dirInfo.cFiles {
if !safeName(file) {
return nil, os.ErrorString("unsafe name: " + file)
}
// When cgo is in use, C files are compiled with gcc,
// otherwise they're compiled with gc.
if len(cgoFiles) > 0 {
cgoOFiles = append(cgoOFiles, file[:len(file)-2]+".o")
} else {
oFiles = append(oFiles, file[:len(file)-2]+".$O")
}
}
for _, file := range dirInfo.sFiles {
if !safeName(file) {
return nil, os.ErrorString("unsafe name: " + file)
}
oFiles = append(oFiles, file[:len(file)-2]+".$O")
}
var buf bytes.Buffer
md := makedata{targ, targDir, "pkg", goFiles, oFiles, cgoFiles, cgoOFiles, imports}
if isCmd {
md.Type = "cmd"
}
if err := makefileTemplate.Execute(&buf, &md); err != nil {
return nil, err
}
return buf.Bytes(), nil
}
var safeBytes = []byte("+-./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz")
func safeName(s string) bool {
if s == "" {
return false
}
for i := 0; i < len(s); i++ {
if c := s[i]; c < 0x80 && bytes.IndexByte(safeBytes, c) < 0 {
return false
}
}
return true
}
// makedata is the data type for the makefileTemplate.
type makedata struct {
Targ string // build target
TargDir string // build target directory
Type string // build type: "pkg" or "cmd"
GoFiles []string // list of non-cgo .go files
OFiles []string // list of .$O files
CgoFiles []string // list of cgo .go files
CgoOFiles []string // list of cgo .o files, without extension
Imports []string // gc/ld import paths
}
var makefileTemplate = template.MustParse(`
include $(GOROOT)/src/Make.inc
TARG={Targ}
TARGDIR={TargDir}
{.section GoFiles}
GOFILES=\
{.repeated section GoFiles}
{@}\
{.end}
{.end}
{.section OFiles}
OFILES=\
{.repeated section OFiles}
{@}\
{.end}
{.end}
{.section CgoFiles}
CGOFILES=\
{.repeated section CgoFiles}
{@}\
{.end}
{.end}
{.section CgoOFiles}
CGO_OFILES=\
{.repeated section CgoOFiles}
{@}\
{.end}
{.end}
GCIMPORTS={.repeated section Imports}-I "{@}" {.end}
LDIMPORTS={.repeated section Imports}-L "{@}" {.end}
include $(GOROOT)/src/Make.{Type}
`,
nil)

172
src/cmd/goinstall/parse.go
View File

@ -1,172 +0,0 @@
// Copyright 2010 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.
// Wrappers for Go parser.
package main
import (
"go/ast"
"go/parser"
"log"
"os"
"path/filepath"
"strconv"
"strings"
"runtime"
)
type dirInfo struct {
goFiles []string // .go files within dir (including cgoFiles)
cgoFiles []string // .go files that import "C"
cFiles []string // .c files within dir
sFiles []string // .s files within dir
imports []string // All packages imported by goFiles
pkgName string // Name of package within dir
}
// scanDir returns a structure with details about the Go content found
// in the given directory. The list of files will NOT contain the
// following entries:
//
// - Files in package main (unless allowMain is true)
// - Files ending in _test.go
// - Files starting with _ (temporary)
// - Files containing .cgo in their names
//
// The imports map keys are package paths imported by listed Go files,
// and the values are the Go files importing the respective package paths.
func scanDir(dir string, allowMain bool) (info *dirInfo, err os.Error) {
f, err := os.Open(dir)
if err != nil {
return nil, err
}
dirs, err := f.Readdir(-1)
f.Close()
if err != nil {
return nil, err
}
goFiles := make([]string, 0, len(dirs))
cgoFiles := make([]string, 0, len(dirs))
cFiles := make([]string, 0, len(dirs))
sFiles := make([]string, 0, len(dirs))
importsm := make(map[string]bool)
pkgName := ""
for i := range dirs {
d := &dirs[i]
if strings.HasPrefix(d.Name, "_") || strings.Index(d.Name, ".cgo") != -1 {
continue
}
if !goodOSArch(d.Name) {
continue
}
switch filepath.Ext(d.Name) {
case ".go":
if strings.HasSuffix(d.Name, "_test.go") {
continue
}
case ".c":
cFiles = append(cFiles, d.Name)
continue
case ".s":
sFiles = append(sFiles, d.Name)
continue
default:
continue
}
filename := filepath.Join(dir, d.Name)
pf, err := parser.ParseFile(fset, filename, nil, parser.ImportsOnly)
if err != nil {
return nil, err
}
s := string(pf.Name.Name)
if s == "main" && !allowMain {
continue
}
if s == "documentation" {
continue
}
if pkgName == "" {
pkgName = s
} else if pkgName != s {
// Only if all files in the directory are in package main
// do we return pkgName=="main".
// A mix of main and another package reverts
// to the original (allowMain=false) behaviour.
if s == "main" || pkgName == "main" {
return scanDir(dir, false)
}
return nil, os.ErrorString("multiple package names in " + dir)
}
goFiles = append(goFiles, d.Name)
for _, decl := range pf.Decls {
for _, spec := range decl.(*ast.GenDecl).Specs {
quoted := string(spec.(*ast.ImportSpec).Path.Value)
unquoted, err := strconv.Unquote(quoted)
if err != nil {
log.Panicf("%s: parser returned invalid quoted string: <%s>", filename, quoted)
}
importsm[unquoted] = true
if unquoted == "C" {
cgoFiles = append(cgoFiles, d.Name)
}
}
}
}
imports := make([]string, len(importsm))
i := 0
for p := range importsm {
imports[i] = p
i++
}
return &dirInfo{goFiles, cgoFiles, cFiles, sFiles, imports, pkgName}, nil
}
// goodOSArch returns false if the filename contains a $GOOS or $GOARCH
// suffix which does not match the current system.
// The recognized filename formats are:
//
// name_$(GOOS).*
// name_$(GOARCH).*
// name_$(GOOS)_$(GOARCH).*
//
func goodOSArch(filename string) bool {
if dot := strings.Index(filename, "."); dot != -1 {
filename = filename[:dot]
}
l := strings.Split(filename, "_", -1)
n := len(l)
if n == 0 {
return true
}
if good, known := goodOS[l[n-1]]; known {
return good
}
if good, known := goodArch[l[n-1]]; known {
if !good || n < 2 {
return false
}
good, known = goodOS[l[n-2]]
return good || !known
}
return true
}
var goodOS = make(map[string]bool)
var goodArch = make(map[string]bool)
func init() {
goodOS = make(map[string]bool)
goodArch = make(map[string]bool)
for _, v := range strings.Fields(goosList) {
goodOS[v] = v == runtime.GOOS
}
for _, v := range strings.Fields(goarchList) {
goodArch[v] = v == runtime.GOARCH
}
}

149
src/cmd/goinstall/path.go
View File

@ -1,149 +0,0 @@
// Copyright 2011 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.
package main
import (
"fmt"
"log"
"os"
"path/filepath"
"runtime"
"strings"
)
var (
gopath []*pkgroot
imports []string
defaultRoot *pkgroot // default root for remote packages
)
// set up gopath: parse and validate GOROOT and GOPATH variables
func init() {
root := runtime.GOROOT()
p, err := newPkgroot(root)
if err != nil {
log.Fatalf("Invalid GOROOT %q: %v", root, err)
}
p.goroot = true
gopath = []*pkgroot{p}
for _, p := range filepath.SplitList(os.Getenv("GOPATH")) {
if p == "" {
continue
}
r, err := newPkgroot(p)
if err != nil {
log.Printf("Invalid GOPATH %q: %v", p, err)
continue
}
gopath = append(gopath, r)
imports = append(imports, r.pkgDir())
// select first GOPATH entry as default
if defaultRoot == nil {
defaultRoot = r
}
}
// use GOROOT if no valid GOPATH specified
if defaultRoot == nil {
defaultRoot = gopath[0]
}
}
type pkgroot struct {
path string
goroot bool // TODO(adg): remove this once Go tree re-organized
}
func newPkgroot(p string) (*pkgroot, os.Error) {
if !filepath.IsAbs(p) {
return nil, os.NewError("must be absolute")
}
ep, err := filepath.EvalSymlinks(p)
if err != nil {
return nil, err
}
return &pkgroot{path: ep}, nil
}
func (r *pkgroot) srcDir() string {
if r.goroot {
return filepath.Join(r.path, "src", "pkg")
}
return filepath.Join(r.path, "src")
}
func (r *pkgroot) pkgDir() string {
goos, goarch := runtime.GOOS, runtime.GOARCH
if e := os.Getenv("GOOS"); e != "" {
goos = e
}
if e := os.Getenv("GOARCH"); e != "" {
goarch = e
}
return filepath.Join(r.path, "pkg", goos+"_"+goarch)
}
func (r *pkgroot) binDir() string {
return filepath.Join(r.path, "bin")
}
func (r *pkgroot) hasSrcDir(name string) bool {
fi, err := os.Stat(filepath.Join(r.srcDir(), name))
if err != nil {
return false
}
return fi.IsDirectory()
}
func (r *pkgroot) hasPkg(name string) bool {
fi, err := os.Stat(filepath.Join(r.pkgDir(), name+".a"))
if err != nil {
return false
}
return fi.IsRegular()
// TODO(adg): check object version is consistent
}
var ErrPackageNotFound = os.NewError("package could not be found locally")
// findPackageRoot takes an import or filesystem path and returns the
// root where the package source should be and the package import path.
func findPackageRoot(path string) (root *pkgroot, pkg string, err os.Error) {
if isLocalPath(path) {
if path, err = filepath.Abs(path); err != nil {
return
}
for _, r := range gopath {
rpath := r.srcDir() + string(filepath.Separator)
if !strings.HasPrefix(path, rpath) {
continue
}
root = r
pkg = path[len(rpath):]
return
}
err = fmt.Errorf("path %q not inside a GOPATH", path)
return
}
root = defaultRoot
pkg = path
for _, r := range gopath {
if r.hasSrcDir(path) {
root = r
return
}
}
err = ErrPackageNotFound
return
}
// Is this a local path? /foo ./foo ../foo . ..
func isLocalPath(s string) bool {
const sep = string(filepath.Separator)
return strings.HasPrefix(s, sep) || strings.HasPrefix(s, "."+sep) || strings.HasPrefix(s, ".."+sep) || s == "." || s == ".."
}

61
src/cmd/goinstall/syslist_test.go
View File

@ -1,61 +0,0 @@
// Copyright 2011 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.
package main
import (
"runtime"
"testing"
)
var (
thisOS = runtime.GOOS
thisArch = runtime.GOARCH
otherOS = anotherOS()
otherArch = anotherArch()
)
func anotherOS() string {
if thisOS != "darwin" {
return "darwin"
}
return "linux"
}
func anotherArch() string {
if thisArch != "amd64" {
return "amd64"
}
return "386"
}
type GoodFileTest struct {
name string
result bool
}
var tests = []GoodFileTest{
{"file.go", true},
{"file.c", true},
{"file_foo.go", true},
{"file_" + thisArch + ".go", true},
{"file_" + otherArch + ".go", false},
{"file_" + thisOS + ".go", true},
{"file_" + otherOS + ".go", false},
{"file_" + thisOS + "_" + thisArch + ".go", true},
{"file_" + otherOS + "_" + thisArch + ".go", false},
{"file_" + thisOS + "_" + otherArch + ".go", false},
{"file_" + otherOS + "_" + otherArch + ".go", false},
{"file_foo_" + thisArch + ".go", true},
{"file_foo_" + otherArch + ".go", false},
{"file_" + thisOS + ".c", true},
{"file_" + otherOS + ".c", false},
}
func TestGoodOSArch(t *testing.T) {
for _, test := range tests {
if goodOSArch(test.name) != test.result {
t.Fatalf("goodOSArch(%q) != %v", test.name, test.result)
}
}
}

1
src/pkg/Makefile
View File

@ -208,6 +208,7 @@ NOTEST+=\
../cmd/cgo\
../cmd/ebnflint\
../cmd/godoc\
../cmd/goinstall\
../cmd/gotest\
../cmd/govet\
../cmd/goyacc\

172
src/pkg/go/build/build.go
View File

@ -15,8 +15,14 @@ import (
"strings"
)
func (d *DirInfo) Build(targ string) ([]*Cmd, os.Error) {
b := &build{obj: "_obj/"}
// Build produces a build Script for the given package.
func Build(tree *Tree, pkg string, info *DirInfo) (*Script, os.Error) {
s := &Script{}
b := &build{
script: s,
path: filepath.Join(tree.SrcDir(), pkg),
}
b.obj = b.abs("_obj") + "/"
goarch := runtime.GOARCH
if g := os.Getenv("GOARCH"); g != "" {
@ -28,17 +34,25 @@ func (d *DirInfo) Build(targ string) ([]*Cmd, os.Error) {
return nil, err
}
var gofiles = d.GoFiles // .go files to be built with gc
var ofiles []string // *.GOARCH files to be linked or packed
// .go files to be built with gc
gofiles := b.abss(info.GoFiles...)
s.addInput(gofiles...)
var ofiles []string // object files to be linked or packed
// make build directory
b.mkdir(b.obj)
s.addIntermediate(b.obj)
// cgo
if len(d.CgoFiles) > 0 {
outGo, outObj := b.cgo(d.CgoFiles)
if len(info.CgoFiles) > 0 {
cgoFiles := b.abss(info.CgoFiles...)
s.addInput(cgoFiles...)
outGo, outObj := b.cgo(cgoFiles)
gofiles = append(gofiles, outGo...)
ofiles = append(ofiles, outObj...)
s.addIntermediate(outGo...)
s.addIntermediate(outObj...)
}
// compile
@ -46,31 +60,130 @@ func (d *DirInfo) Build(targ string) ([]*Cmd, os.Error) {
ofile := b.obj + "_go_." + b.arch
b.gc(ofile, gofiles...)
ofiles = append(ofiles, ofile)
s.addIntermediate(ofile)
}
// assemble
for _, sfile := range d.SFiles {
for _, sfile := range info.SFiles {
ofile := b.obj + sfile[:len(sfile)-1] + b.arch
sfile = b.abs(sfile)
s.addInput(sfile)
b.asm(ofile, sfile)
ofiles = append(ofiles, ofile)
s.addIntermediate(sfile, ofile)
}
if len(ofiles) == 0 {
return nil, os.NewError("make: no object files to build")
}
if d.IsCommand() {
// choose target file
var targ string
if info.IsCommand() {
// use the last part of the import path as binary name
_, bin := filepath.Split(pkg)
targ = filepath.Join(tree.BinDir(), bin)
} else {
targ = filepath.Join(tree.PkgDir(), pkg+".a")
}
// make target directory
targDir, _ := filepath.Split(targ)
b.mkdir(targDir)
// link binary or pack object
if info.IsCommand() {
b.ld(targ, ofiles...)
} else {
b.gopack(targ, ofiles...)
}
s.Output = append(s.Output, targ)
return b.cmds, nil
return b.script, nil
}
// A Script describes the build process for a Go package.
// The Input, Intermediate, and Output fields are lists of absolute paths.
type Script struct {
Cmd []*Cmd
Input []string
Intermediate []string
Output []string
}
func (s *Script) addInput(file ...string) {
s.Input = append(s.Input, file...)
}
func (s *Script) addIntermediate(file ...string) {
s.Intermediate = append(s.Intermediate, file...)
}
// Run runs the Script's Cmds in order.
func (s *Script) Run() os.Error {
for _, c := range s.Cmd {
if err := c.Run(); err != nil {
return err
}
}
return nil
}
// Stale returns true if the build's inputs are newer than its outputs.
func (s *Script) Stale() bool {
var latest int64
// get latest mtime of outputs
for _, file := range s.Output {
fi, err := os.Stat(file)
if err != nil {
// any error reading output files means stale
return true
}
if m := fi.Mtime_ns; m > latest {
latest = m
}
}
for _, file := range s.Input {
fi, err := os.Stat(file)
if err != nil || fi.Mtime_ns > latest {
// any error reading input files means stale
// (attempt to rebuild to figure out why)
return true
}
}
return false
}
// Clean removes the Script's Intermediate files.
// It tries to remove every file and returns the first error it encounters.
func (s *Script) Clean() (err os.Error) {
for i := len(s.Intermediate) - 1; i >= 0; i-- {
if e := os.Remove(s.Intermediate[i]); err == nil {
err = e
}
}
return
}
// Clean removes the Script's Intermediate and Output files.
// It tries to remove every file and returns the first error it encounters.
func (s *Script) Nuke() (err os.Error) {
for i := len(s.Output) - 1; i >= 0; i-- {
if e := os.Remove(s.Output[i]); err == nil {
err = e
}
}
if e := s.Clean(); err == nil {
err = e
}
return
}
// A Cmd describes an individual build command.
type Cmd struct {
Args []string // command-line
Stdout string // write standard output to this file, "" is passthrough
Dir string // working directory
Input []string // file paths (dependencies)
Output []string // file paths
}
@ -79,14 +192,15 @@ func (c *Cmd) String() string {
return strings.Join(c.Args, " ")
}
func (c *Cmd) Run(dir string) os.Error {
// Run executes the Cmd.
func (c *Cmd) Run() os.Error {
out := new(bytes.Buffer)
cmd := exec.Command(c.Args[0], c.Args[1:]...)
cmd.Dir = dir
cmd.Dir = c.Dir
cmd.Stdout = out
cmd.Stderr = out
if c.Stdout != "" {
f, err := os.Create(filepath.Join(dir, c.Stdout))
f, err := os.Create(c.Stdout)
if err != nil {
return err
}
@ -99,15 +213,6 @@ func (c *Cmd) Run(dir string) os.Error {
return nil
}
func (c *Cmd) Clean(dir string) (err os.Error) {
for _, fn := range c.Output {
if e := os.RemoveAll(fn); err == nil {
err = e
}
}
return
}
// ArchChar returns the architecture character for the given goarch.
// For example, ArchChar("amd64") returns "6".
func ArchChar(goarch string) (string, os.Error) {
@ -123,13 +228,29 @@ func ArchChar(goarch string) (string, os.Error) {
}
type build struct {
cmds []*Cmd
obj string
arch string
script *Script
path string
obj string
arch string
}
func (b *build) abs(file string) string {
if filepath.IsAbs(file) {
return file
}
return filepath.Join(b.path, file)
}
func (b *build) abss(file ...string) []string {
s := make([]string, len(file))
for i, f := range file {
s[i] = b.abs(f)
}
return s
}
func (b *build) add(c Cmd) {
b.cmds = append(b.cmds, &c)
b.script.Cmd = append(b.script.Cmd, &c)
}
func (b *build) mkdir(name string) {
@ -222,6 +343,7 @@ func (b *build) cgo(cgofiles []string) (outGo, outObj []string) {
gofiles := []string{b.obj + "_cgo_gotypes.go"}
cfiles := []string{b.obj + "_cgo_main.c", b.obj + "_cgo_export.c"}
for _, fn := range cgofiles {
fn = filepath.Base(fn)
f := b.obj + fn[:len(fn)-2]
gofiles = append(gofiles, f+"cgo1.go")
cfiles = append(cfiles, f+"cgo2.c")

36
src/pkg/go/build/build_test.go
View File

@ -5,50 +5,46 @@
package build
import (
"os"
"path/filepath"
"runtime"
"strings"
"testing"
)
var buildDirs = []string{
"pkg/path",
"cmd/gofix",
"pkg/big",
"pkg/go/build/cgotest",
// TODO(adg): test building binaries
var buildPkgs = []string{
"path",
"big",
"go/build/cgotest",
}
func TestBuild(t *testing.T) {
out, err := filepath.Abs("_test/out")
if err != nil {
t.Fatal(err)
}
for _, d := range buildDirs {
if runtime.GOARCH == "arm" && strings.Contains(d, "/cgo") {
for _, pkg := range buildPkgs {
if runtime.GOARCH == "arm" && strings.Contains(pkg, "/cgo") {
// no cgo for arm, yet.
continue
}
dir := filepath.Join(runtime.GOROOT(), "src", d)
testBuild(t, dir, out)
tree := Path[0] // Goroot
testBuild(t, tree, pkg)
}
}
func testBuild(t *testing.T, dir, targ string) {
d, err := ScanDir(dir, true)
func testBuild(t *testing.T, tree *Tree, pkg string) {
dir := filepath.Join(tree.SrcDir(), pkg)
info, err := ScanDir(dir, true)
if err != nil {
t.Error(err)
return
}
defer os.Remove(targ)
cmds, err := d.Build(targ)
s, err := Build(tree, pkg, info)
if err != nil {
t.Error(err)
return
}
for _, c := range cmds {
for _, c := range s.Cmd {
t.Log("Run:", c)
err = c.Run(dir)
err = c.Run()
if err != nil {
t.Error(c, err)
return

11
src/pkg/go/build/dir.go
View File

@ -50,7 +50,6 @@ func ScanDir(dir string, allowMain bool) (info *DirInfo, err os.Error) {
var di DirInfo
imported := make(map[string]bool)
pkgName := ""
fset := token.NewFileSet()
for i := range dirs {
d := &dirs[i]
@ -89,14 +88,14 @@ func ScanDir(dir string, allowMain bool) (info *DirInfo, err os.Error) {
if s == "documentation" {
continue
}
if pkgName == "" {
pkgName = s
} else if pkgName != s {
if di.PkgName == "" {
di.PkgName = s
} else if di.PkgName != s {
// Only if all files in the directory are in package main
// do we return pkgName=="main".
// do we return PkgName=="main".
// A mix of main and another package reverts
// to the original (allowMain=false) behaviour.
if s == "main" || pkgName == "main" {
if s == "main" || di.PkgName == "main" {
return ScanDir(dir, false)
}
return nil, os.ErrorString("multiple package names in " + dir)