class Go < Formula desc "Open source programming language to build simple/reliable/efficient software" homepage "https://golang.org" stable do url "https://storage.googleapis.com/golang/go1.9.1.src.tar.gz" mirror "https://fossies.org/linux/misc/go1.9.1.src.tar.gz" version "1.9.1" sha256 "a84afc9dc7d64fe0fa84d4d735e2ece23831a22117b50dafc75c1484f1cb550e" 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}" end end bottle do sha256 "6e414b95839b7bd8b4c6b7c54671afa0ee90f2889fc2a745371335d32b58fbc9" => :high_sierra sha256 "81d491f83885c6f8a323d9a327c4980a58b5814c5596f3503e0ead2bbfce7c55" => :sierra sha256 "13399759706125f07d1ce1e61430870aa9ff3f314d52edd36c0d7ff9f14cbcdf" => :el_capitan end head do url "https://go.googlesource.com/go.git" resource "gotools" do url "https://go.googlesource.com/tools.git" end end option "without-cgo", "Build without cgo (also disables race detector)" option "without-race", "Build without race detector" depends_on :macos => :mountain_lion # Don't update this unless this version cannot bootstrap the new version. resource "gobootstrap" do url "https://storage.googleapis.com/golang/go1.7.darwin-amd64.tar.gz" version "1.7" sha256 "51d905e0b43b3d0ed41aaf23e19001ab4bc3f96c3ca134b48f7892485fc52961" end def install (buildpath/"gobootstrap").install resource("gobootstrap") ENV["GOROOT_BOOTSTRAP"] = buildpath/"gobootstrap" cd "src" do ENV["GOROOT_FINAL"] = libexec ENV["GOOS"] = "darwin" ENV["CGO_ENABLED"] = "0" if build.without?("cgo") 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 build.with?("cgo") && build.with?("race") && MacOS.prefer_64_bit? system bin/"go", "install", "-race", "std" end # Build and install godoc ENV.prepend_path "PATH", bin ENV["GOPATH"] = buildpath (buildpath/"src/golang.org/x/tools").install resource("gotools") cd "src/golang.org/x/tools/cmd/godoc/" do system "go", "build" (libexec/"bin").install "godoc" end bin.install_symlink libexec/"bin/godoc" end def caveats; <<-EOS.undent A valid GOPATH is required to use the `go get` command. If $GOPATH is not specified, $HOME/go will be used by default: https://golang.org/doc/code.html#GOPATH You may wish to add the GOROOT-based install location to your PATH: export PATH=$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") # godoc was installed assert_predicate libexec/"bin/godoc", :exist? assert File.executable?(libexec/"bin/godoc") if build.with? "cgo" ENV["GOOS"] = "freebsd" system bin/"go", "build", "hello.go" end end end