1 files changed, 40 insertions, 0 deletions
diff --git a/pkgs/development/compilers/emscripten/default.nix b/pkgs/development/compilers/emscripten/default.nix
new file mode 100644
index 00000000000..43f256b58b0
--- /dev/null
+++ b/pkgs/development/compilers/emscripten/default.nix
@@ -0,0 +1,40 @@
+{ stdenv, fetchgit, emscriptenfastcomp, python, nodejs, closurecompiler, jre }:
+
+let
+  tag = "1.21.0";
+in
+
+stdenv.mkDerivation rec {
+  name = "emscripten-${tag}";
+
+  src = fetchgit {
+    url = git://github.com/kripken/emscripten;
+    rev = "refs/tags/${tag}";
+    sha256 = "0y17ab4nhd3521b50sv2i2667w0rlcnmlkpkgw5j3fsh8awxgf32";
+  };
+
+  buildCommand = ''
+    mkdir $out
+    cp -a $src $out/bin
+    chmod -R +w $out/bin
+    grep -rl '^#!/usr.*python' $out/bin | xargs sed -i -s 's@^#!/usr.*python.*@#!${python}/bin/python@'
+    sed -i -e "s,EM_CONFIG = '~/.emscripten',EM_CONFIG = '$out/config'," $out/bin/tools/shared.py
+    sed -i -e 's,^.*did not see a source tree above the LLVM.*$,      return True,' $out/bin/tools/shared.py
+    sed -i -e 's,def check_sanity(force=False):,def check_sanity(force=False):\n  return,' $out/bin/tools/shared.py
+
+    echo "EMSCRIPTEN_ROOT = '$out/bin'" > $out/config
+    echo "LLVM_ROOT = '${emscriptenfastcomp}'" >> $out/config
+    echo "PYTHON = '${python}/bin/python'" >> $out/config
+    echo "NODE_JS = '${nodejs}/bin/node'" >> $out/config
+    echo "JS_ENGINES = [NODE_JS]" >> $out/config
+    echo "COMPILER_ENGINE = NODE_JS" >> $out/config
+    echo "CLOSURE_COMPILER = '${closurecompiler}/bin/closure-compiler'" >> $out/config
+    echo "JAVA = '${jre}/bin/java'" >> $out/config
+  '';
+  meta = with stdenv.lib; {
+    homepage = https://github.com/kripken/emscripten;
+    description = "An LLVM-to-JavaScript Compiler";
+    maintainers = with maintainers; [ bosu ];
+    license = with licenses; ncsa;
+  };
+}