| // Copyright 2015 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" |
| "go/build" |
| "io" |
| "os/exec" |
| "path/filepath" |
| "strings" |
| "text/template" |
| ) |
| |
| func goIOSBind(gobind string, pkgs []*build.Package, archs []string) error { |
| // Run gobind to generate the bindings |
| cmd := exec.Command( |
| gobind, |
| "-lang=go,objc", |
| "-outdir="+tmpdir, |
| ) |
| cmd.Env = append(cmd.Env, "GOOS=darwin") |
| cmd.Env = append(cmd.Env, "CGO_ENABLED=1") |
| if len(ctx.BuildTags) > 0 { |
| cmd.Args = append(cmd.Args, "-tags="+strings.Join(ctx.BuildTags, ",")) |
| } |
| if bindPrefix != "" { |
| cmd.Args = append(cmd.Args, "-prefix="+bindPrefix) |
| } |
| for _, p := range pkgs { |
| cmd.Args = append(cmd.Args, p.ImportPath) |
| } |
| if err := runCmd(cmd); err != nil { |
| return err |
| } |
| |
| srcDir := filepath.Join(tmpdir, "src", "gobind") |
| gopath := fmt.Sprintf("GOPATH=%s%c%s", tmpdir, filepath.ListSeparator, goEnv("GOPATH")) |
| |
| name := pkgs[0].Name |
| title := strings.Title(name) |
| |
| if buildO != "" && !strings.HasSuffix(buildO, ".framework") { |
| return fmt.Errorf("static framework name %q missing .framework suffix", buildO) |
| } |
| if buildO == "" { |
| buildO = title + ".framework" |
| } |
| |
| fileBases := make([]string, len(pkgs)+1) |
| for i, pkg := range pkgs { |
| fileBases[i] = bindPrefix + strings.Title(pkg.Name) |
| } |
| fileBases[len(fileBases)-1] = "Universe" |
| |
| cmd = exec.Command("xcrun", "lipo", "-create") |
| |
| for _, arch := range archs { |
| env := darwinEnv[arch] |
| env = append(env, gopath) |
| path, err := goIOSBindArchive(name, env) |
| if err != nil { |
| return fmt.Errorf("darwin-%s: %v", arch, err) |
| } |
| cmd.Args = append(cmd.Args, "-arch", archClang(arch), path) |
| } |
| |
| // Build static framework output directory. |
| if err := removeAll(buildO); err != nil { |
| return err |
| } |
| headers := buildO + "/Versions/A/Headers" |
| if err := mkdir(headers); err != nil { |
| return err |
| } |
| if err := symlink("A", buildO+"/Versions/Current"); err != nil { |
| return err |
| } |
| if err := symlink("Versions/Current/Headers", buildO+"/Headers"); err != nil { |
| return err |
| } |
| if err := symlink("Versions/Current/"+title, buildO+"/"+title); err != nil { |
| return err |
| } |
| |
| cmd.Args = append(cmd.Args, "-o", buildO+"/Versions/A/"+title) |
| if err := runCmd(cmd); err != nil { |
| return err |
| } |
| |
| // Copy header file next to output archive. |
| headerFiles := make([]string, len(fileBases)) |
| if len(fileBases) == 1 { |
| headerFiles[0] = title + ".h" |
| err := copyFile( |
| headers+"/"+title+".h", |
| srcDir+"/"+bindPrefix+title+".objc.h", |
| ) |
| if err != nil { |
| return err |
| } |
| } else { |
| for i, fileBase := range fileBases { |
| headerFiles[i] = fileBase + ".objc.h" |
| err := copyFile( |
| headers+"/"+fileBase+".objc.h", |
| srcDir+"/"+fileBase+".objc.h") |
| if err != nil { |
| return err |
| } |
| } |
| err := copyFile( |
| headers+"/ref.h", |
| srcDir+"/ref.h") |
| if err != nil { |
| return err |
| } |
| headerFiles = append(headerFiles, title+".h") |
| err = writeFile(headers+"/"+title+".h", func(w io.Writer) error { |
| return iosBindHeaderTmpl.Execute(w, map[string]interface{}{ |
| "pkgs": pkgs, "title": title, "bases": fileBases, |
| }) |
| }) |
| if err != nil { |
| return err |
| } |
| } |
| |
| resources := buildO + "/Versions/A/Resources" |
| if err := mkdir(resources); err != nil { |
| return err |
| } |
| if err := symlink("Versions/Current/Resources", buildO+"/Resources"); err != nil { |
| return err |
| } |
| err := writeFile(buildO+"/Resources/Info.plist", func(w io.Writer) error { |
| _, err := w.Write([]byte(iosBindInfoPlist)) |
| return err |
| }) |
| if err != nil { |
| return err |
| } |
| |
| var mmVals = struct { |
| Module string |
| Headers []string |
| }{ |
| Module: title, |
| Headers: headerFiles, |
| } |
| err = writeFile(buildO+"/Versions/A/Modules/module.modulemap", func(w io.Writer) error { |
| return iosModuleMapTmpl.Execute(w, mmVals) |
| }) |
| if err != nil { |
| return err |
| } |
| return symlink("Versions/Current/Modules", buildO+"/Modules") |
| } |
| |
| const iosBindInfoPlist = `<?xml version="1.0" encoding="UTF-8"?> |
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> |
| <plist version="1.0"> |
| <dict> |
| </dict> |
| </plist> |
| ` |
| |
| var iosModuleMapTmpl = template.Must(template.New("iosmmap").Parse(`framework module "{{.Module}}" { |
| header "ref.h" |
| {{range .Headers}} header "{{.}}" |
| {{end}} |
| export * |
| }`)) |
| |
| func goIOSBindArchive(name string, env []string) (string, error) { |
| arch := getenv(env, "GOARCH") |
| archive := filepath.Join(tmpdir, name+"-"+arch+".a") |
| err := goBuild("gobind", env, "-buildmode=c-archive", "-o", archive) |
| if err != nil { |
| return "", err |
| } |
| |
| return archive, nil |
| } |
| |
| var iosBindHeaderTmpl = template.Must(template.New("ios.h").Parse(` |
| // Objective-C API for talking to the following Go packages |
| // |
| {{range .pkgs}}// {{.ImportPath}} |
| {{end}}// |
| // File is generated by gomobile bind. Do not edit. |
| #ifndef __{{.title}}_FRAMEWORK_H__ |
| #define __{{.title}}_FRAMEWORK_H__ |
| |
| {{range .bases}}#include "{{.}}.objc.h" |
| {{end}} |
| #endif |
| `)) |