emscripten 1.16.0 (new formula)

Closes Homebrew/homebrew#28417.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/emscripten.rb

@@ -0,0 +1,80 @@
+require "formula"
+
+class Emscripten < Formula
+  homepage "http://emscripten.org"
+  url "https://github.com/kripken/emscripten/archive/1.16.0.tar.gz"
+  sha1 "e23bec39c32eb2ccfe889e320cd8da132a4bbf51"
+
+  head "https://github.com/kripken/emscripten.git", :branch => "incoming"
+
+  head do
+    resource "fastcomp" do
+      url "https://github.com/kripken/emscripten-fastcomp.git", :branch => "incoming"
+    end
+
+    resource "fastcomp-clang" do
+      url "https://github.com/kripken/emscripten-fastcomp-clang.git", :branch => "incoming"
+    end
+  end
+
+  stable do
+    resource "fastcomp" do
+      url "https://github.com/kripken/emscripten-fastcomp/archive/1.16.0.tar.gz"
+      sha1 "ca10c5a8059fdd321143d8f10c0810176be3d467"
+    end
+
+    resource "fastcomp-clang" do
+      url "https://github.com/kripken/emscripten-fastcomp-clang/archive/1.16.0.tar.gz"
+      sha1 "768a15d3a8cd9e92f87521cadf3e5f63f3e24fa1"
+    end
+  end
+
+  depends_on "node"
+  depends_on "closure-compiler" => :optional
+  depends_on "yuicompressor"
+
+  def install
+    # note - OS X doesn't provide a python2 binary. Use the default python instead
+    system "grep --null -rl '^#!/usr/bin/env python2$' . | xargs -0 sed -i '' 's,^#!/usr/bin/env python2$,#!/usr/bin/env python,'"
+    system "grep --null -rl '^#!/usr/bin/python2$' . | xargs -0 sed -i '' 's,^#!/usr/bin/python2$,#!/usr/bin/python,'"
+
+    # Note - as per documentation, _all_ files from the repository are
+    # required, as emscripten is just a collection of scripts that need to
+    # be installed in exactly the same layout as in the git repo
+    libexec.install Dir['*']
+
+    (buildpath/"fastcomp").install resource("fastcomp")
+    (buildpath/"fastcomp/tools/clang").install resource("fastcomp-clang")
+
+    args = [
+      "--prefix=#{libexec}/llvm",
+      "--enable-optimized",
+      "--enable-targets=host,js",
+      "--disable-assertions",
+      "--disable-bindings",
+    ]
+
+    cd "fastcomp" do
+      system "./configure", *args
+      system "make"
+      system "make", "install"
+    end
+
+    emscripts = %w(em++ em-config emar emcc emconfigure emlink.py emmake emranlib emrun emscons)
+
+    emscripts.each do |emscript|
+        bin.install_symlink libexec/emscript
+    end
+  end
+
+  test do
+    # copied from the vanilla llvm formula
+    system "#{libexec}/llvm/bin/llvm-config", "--version"
+  end
+
+  def caveats; <<-EOS.undent
+    Manually set LLVM_ROOT to \"#{opt_prefix}/libexec/llvm/bin\"
+    in ~/.emscripten after running emcc for the first time.
+    EOS
+  end
+end