185 lines
6.7 KiB
Ruby
185 lines
6.7 KiB
Ruby
require "language/node"
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class Emscripten < Formula
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desc "LLVM bytecode to JavaScript compiler"
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homepage "https://emscripten.org/"
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# TODO: Remove from versioned dependency conflict allowlist when `python`
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# symlink is migrated to `python@3.10`.
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url "https://github.com/emscripten-core/emscripten/archive/3.1.21.tar.gz"
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sha256 "641f92dbceb6fa5644e6e037e8ad520f9132f0f4910277b1e729bdf05c087892"
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license all_of: [
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"Apache-2.0", # binaryen
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"Apache-2.0" => { with: "LLVM-exception" }, # llvm
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any_of: ["MIT", "NCSA"], # emscripten
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]
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head "https://github.com/emscripten-core/emscripten.git", branch: "main"
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livecheck do
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url :stable
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regex(/^v?(\d+(?:\.\d+)+)$/i)
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end
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bottle do
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sha256 cellar: :any, arm64_monterey: "e029eaa4dc763afcf49d6e74af33c531493b4069d58e2272a9ea7863d508a7d8"
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sha256 cellar: :any, arm64_big_sur: "c2fd4998b56b69bf1a3f2aa4aa8c72bf2d1717b7236616507394f202e3b73012"
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sha256 cellar: :any, monterey: "6893e7c9b3a7b6c8fd61b57a4ec8abe169ba31286b0cdcd867a0de82d14ca6ee"
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sha256 cellar: :any, big_sur: "6ba4872aa926ae1a8dbeb818bd1a1cdca46b5a17e955bc1061740fda97d36dce"
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sha256 cellar: :any, catalina: "0763b68a24ba727f9d36388fc212990284440525db643c3c5d6a0d24e56f74f2"
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sha256 cellar: :any_skip_relocation, x86_64_linux: "402fce30cf5d0f194e5a1870981e29f3ab39dbf949edf317cc339ba16cfb09b2"
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end
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depends_on "cmake" => :build
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depends_on "node"
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# TODO: Check if we can use `uses_from_macos "python"`.
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depends_on "python@3.10"
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depends_on "yuicompressor"
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# OpenJDK is needed as a dependency on Linux and ARM64 for google-closure-compiler,
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# an emscripten dependency, because the native GraalVM image will not work.
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on_macos do
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on_arm do
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depends_on "openjdk"
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end
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end
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on_linux do
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depends_on "openjdk"
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end
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fails_with gcc: "5"
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# Use emscripten's recommended binaryen revision to avoid build failures.
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# See llvm resource below for instructions on how to update this.
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resource "binaryen" do
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url "https://github.com/WebAssembly/binaryen.git",
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revision: "d4d33b1e175c962548347c59339783c11d5d1a23"
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end
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# emscripten needs argument '-fignore-exceptions', which is only available in llvm >= 12
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# To find the correct llvm revision, find a corresponding commit at:
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# https://github.com/emscripten-core/emsdk/blob/main/emscripten-releases-tags.json
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# Then take this commit and go to:
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# https://chromium.googlesource.com/emscripten-releases/+/<commit>/DEPS
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# Then use the listed llvm_project_revision for the resource below.
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resource "llvm" do
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url "https://github.com/llvm/llvm-project.git",
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revision: "a4a29438f451370ed241dde30bfcaab0fdf2ab71"
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end
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def install
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# Avoid hardcoding the executables we pass to `write_env_script` below.
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# Prefer executables without `.py` extensions, but include those with `.py`
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# extensions if there isn't a matching executable without the `.py` extension.
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emscripts = buildpath.children.select do |pn|
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next false unless pn.file?
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next false unless pn.executable?
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next false if pn.extname == ".py" && pn.basename(".py").exist?
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true
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end.map(&:basename)
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# All files from the repository are required as emscripten is a collection
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# of scripts which need to be installed in the same layout as in the Git
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# repository.
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libexec.install buildpath.children
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# emscripten needs an llvm build with the following executables:
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# https://github.com/emscripten-core/emscripten/blob/#{version}/docs/packaging.md#dependencies
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resource("llvm").stage do
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projects = %w[
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clang
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lld
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]
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targets = %w[
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host
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WebAssembly
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]
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# Apple's libstdc++ is too old to build LLVM
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ENV.libcxx if ENV.compiler == :clang
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# compiler-rt has some iOS simulator features that require i386 symbols
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# I'm assuming the rest of clang needs support too for 32-bit compilation
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# to work correctly, but if not, perhaps universal binaries could be
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# limited to compiler-rt. llvm makes this somewhat easier because compiler-rt
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# can almost be treated as an entirely different build from llvm.
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ENV.permit_arch_flags
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args = %W[
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-DLLVM_ENABLE_PROJECTS=#{projects.join(";")}
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-DLLVM_TARGETS_TO_BUILD=#{targets.join(";")}
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-DLLVM_LINK_LLVM_DYLIB=ON
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-DLLVM_BUILD_LLVM_DYLIB=ON
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-DLLVM_INCLUDE_EXAMPLES=OFF
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-DLLVM_INCLUDE_TESTS=OFF
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-DLLVM_INSTALL_UTILS=OFF
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]
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sdk = MacOS.sdk_path_if_needed
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args << "-DDEFAULT_SYSROOT=#{sdk}" if sdk
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system "cmake", "-S", "llvm", "-B", "build",
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"-G", "Unix Makefiles",
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*args, *std_cmake_args(install_prefix: libexec/"llvm")
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system "cmake", "--build", "build"
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system "cmake", "--build", "build", "--target", "install"
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end
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resource("binaryen").stage do
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system "cmake", "-S", ".", "-B", "build", *std_cmake_args(install_prefix: libexec/"binaryen")
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system "cmake", "--build", "build"
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system "cmake", "--install", "build"
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end
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cd libexec do
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system "npm", "install", *Language::Node.local_npm_install_args
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rm_f "node_modules/ws/builderror.log" # Avoid references to Homebrew shims
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# Delete native GraalVM image in incompatible platforms.
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if OS.linux?
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rm_rf "node_modules/google-closure-compiler-linux"
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elsif Hardware::CPU.arm?
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rm_rf "node_modules/google-closure-compiler-osx"
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end
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end
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# Add JAVA_HOME to env_script on ARM64 macOS and Linux, so that google-closure-compiler
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# can find OpenJDK
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emscript_env = { PYTHON: Formula["python@3.10"].opt_bin/"python3.10" }
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emscript_env.merge! Language::Java.overridable_java_home_env if OS.linux? || Hardware::CPU.arm?
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emscripts.each do |emscript|
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(bin/emscript).write_env_script libexec/emscript, emscript_env
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end
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end
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def post_install
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return if (libexec/".emscripten").exist?
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system bin/"emcc", "--generate-config"
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inreplace libexec/".emscripten" do |s|
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s.gsub!(/^(LLVM_ROOT.*)/, "#\\1\nLLVM_ROOT = \"#{libexec}/llvm/bin\"\\2")
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s.gsub!(/^(BINARYEN_ROOT.*)/, "#\\1\nBINARYEN_ROOT = \"#{libexec}/binaryen\"\\2")
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end
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end
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test do
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# Fixes "Unsupported architecture" Xcode prepocessor error
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ENV.delete "CPATH"
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ENV["NODE_OPTIONS"] = "--no-experimental-fetch"
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(testpath/"test.c").write <<~EOS
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#include <stdio.h>
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int main()
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{
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printf("Hello World!");
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return 0;
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}
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EOS
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system bin/"emcc", "test.c", "-o", "test.js", "-s", "NO_EXIT_RUNTIME=0"
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assert_equal "Hello World!", shell_output("node test.js").chomp
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end
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end
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