class Go < Formula desc "The Go programming language" homepage "https://golang.org" stable do url "https://storage.googleapis.com/golang/go1.7.1.src.tar.gz" mirror "https://fossies.org/linux/misc/go1.7.1.src.tar.gz" version "1.7.1" sha256 "2b843f133b81b7995f26d0cb64bbdbb9d0704b90c44df45f844d28881ad442d3" go_version = version.to_s.split(".")[0..1].join(".") resource "gotools" do url "https://go.googlesource.com/tools.git", branch: "release-branch.go#{go_version}", revision: "26c35b4dcf6dfcb924e26828ed9f4d028c5ce05a" end end bottle do sha256 "341f36ef4172b2df09cf100b873ffcbd1be9f6d39c4c1a190128443277537c30" => :sierra sha256 "fdeadb70a2a12bb5fb98e8c7ebe9b9bc9fa8eb7b7ffb0282094e47d3018da4fc" => :el_capitan sha256 "b172524cb48d5649cb125c34b50b780593f9a9527d714918ccd433a0bb17dc89" => :yosemite sha256 "e43d9abf5a88d17647497ebfc3b728c52fc92926879d9f15b726338b0c01e745" => :mavericks end head do url "https://github.com/golang/go.git" resource "gotools" do url "https://go.googlesource.com/tools.git" end end option "without-cgo", "Build without cgo" option "without-godoc", "godoc will not be installed for you" option "without-race", "Build without race detector" depends_on macos: :mountain_lion # Should use the last stable binary release to bootstrap. # More explicitly, leave this at 1.7 when 1.7.1 is released. resource "gobootstrap" do url "https://storage.googleapis.com/golang/go1.7.darwin-amd64.tar.gz" version "1.7" sha256 "51d905e0b43b3d0ed41aaf23e19001ab4bc3f96c3ca134b48f7892485fc52961" end def install ENV.permit_weak_imports (buildpath/"gobootstrap").install resource("gobootstrap") ENV["GOROOT_BOOTSTRAP"] = buildpath/"gobootstrap" cd "src" do ENV["GOROOT_FINAL"] = libexec ENV["GOOS"] = "darwin" ENV["CGO_ENABLED"] = build.with?("cgo") ? "1" : "0" system "./make.bash", "--no-clean" end (buildpath/"pkg/obj").rmtree rm_rf "gobootstrap" # Bootstrap not required beyond compile. libexec.install Dir["*"] bin.install_symlink Dir[libexec/"bin/go*"] # Race detector only supported on amd64 platforms. # https://golang.org/doc/articles/race_detector.html if MacOS.prefer_64_bit? && build.with?("race") system bin/"go", "install", "-race", "std" end if build.with? "godoc" ENV.prepend_path "PATH", bin ENV["GOPATH"] = buildpath (buildpath/"src/golang.org/x/tools").install resource("gotools") if build.with? "godoc" cd "src/golang.org/x/tools/cmd/godoc/" do system "go", "build" (libexec/"bin").install "godoc" end bin.install_symlink libexec/"bin/godoc" end end end def caveats; <<-EOS.undent As of go 1.2, a valid GOPATH is required to use the `go get` command: https://golang.org/doc/code.html#GOPATH You may wish to add the GOROOT-based install location to your PATH: export PATH=$PATH:#{opt_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", shell_output("#{bin}/go run hello.go") if build.with? "godoc" assert File.exist?(libexec/"bin/godoc") assert File.executable?(libexec/"bin/godoc") end end end