require 'formula' class Go < Formula homepage 'http://golang.org' head 'https://go.googlecode.com/hg/' url 'https://go.googlecode.com/files/go1.2.1.src.tar.gz' version '1.2.1' sha1 '6a4b9991eddd8039438438d6aa25126ab7e07f2f' bottle do revision 1 sha1 "c9d4efb3c0597bcea12a5556c85199bc468cdffb" => :mavericks sha1 "bff65b108ec15cb11c7a41afd2f57ce6a6f6029e" => :mountain_lion sha1 "1c09d8aaac7d78b54405c39e5ede0ee9d927860f" => :lion end option 'cross-compile-all', "Build the cross-compilers and runtime support for all supported platforms" option 'cross-compile-common', "Build the cross-compilers and runtime support for darwin, linux and windows" option 'without-cgo', "Build without cgo" def install # install the completion scripts bash_completion.install 'misc/bash/go' => 'go-completion.bash' zsh_completion.install 'misc/zsh/go' => 'go' # host platform (darwin) must come last in the targets list if build.include? 'cross-compile-all' targets = [ ['linux', ['386', 'amd64', 'arm']], ['freebsd', ['386', 'amd64']], ['netbsd', ['386', 'amd64']], ['openbsd', ['386', 'amd64']], ['windows', ['386', 'amd64']], ['darwin', ['386', 'amd64']], ] elsif build.include? 'cross-compile-common' targets = [ ['linux', ['386', 'amd64', 'arm']], ['windows', ['386', 'amd64']], ['darwin', ['386', 'amd64']], ] else targets = [['darwin', ['']]] end # The version check is due to: # http://codereview.appspot.com/5654068 (buildpath/'VERSION').write('default') if build.head? cd 'src' do targets.each do |os, archs| cgo_enabled = os == 'darwin' && build.with?('cgo') ? "1" : "0" archs.each do |arch| ENV['GOROOT_FINAL'] = libexec ENV['GOOS'] = os ENV['GOARCH'] = arch ENV['CGO_ENABLED'] = cgo_enabled system "./make.bash", "--no-clean" end end end (buildpath/'pkg/obj').rmtree libexec.install Dir['*'] bin.install_symlink Dir["#{libexec}/bin/go*"] end def caveats; <<-EOS.undent As of go 1.2, a valid GOPATH is required to use the `go get` command: http://golang.org/doc/code.html#GOPATH `go vet` and `go doc` are now part of the go.tools sub repo: http://golang.org/doc/go1.2#go_tools_godoc To get `go vet` and `go doc` run: go get code.google.com/p/go.tools/cmd/godoc go get code.google.com/p/go.tools/cmd/vet You may wish to add the GOROOT-based install location to your PATH: export PATH=$PATH:#{libexec}/bin EOS end test do (testpath/'hello.go').write <<-EOS.undent package main import "fmt" func main() { fmt.Println("Hello World") } EOS # Run go fmt check for no errors then run the program. # This is a a bare minimum of go working as it uses fmt, build, and run. system "#{bin}/go", "fmt", "hello.go" assert_equal "Hello World\n", `#{bin}/go run hello.go` end end