2 files changed, 72 insertions, 0 deletions
diff --git a/pkgs/development/compilers/llvm/3.8/clang/default.nix b/pkgs/development/compilers/llvm/3.8/clang/default.nix
new file mode 100644
index 00000000000..047f87c92a9
--- /dev/null
+++ b/pkgs/development/compilers/llvm/3.8/clang/default.nix
@@ -0,0 +1,55 @@
+{ stdenv, fetch, cmake, libxml2, libedit, llvm, version, clang-tools-extra_src, python }:
+
+let
+  gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
+in stdenv.mkDerivation {
+  name = "clang-${version}";
+
+  unpackPhase = ''
+    unpackFile ${fetch "cfe" "1ybcac8hlr9vl3wg8s4v6cp0c0qgqnwprsv85lihbkq3vqv94504"}
+    mv cfe-${version}.src clang
+    sourceRoot=$PWD/clang
+    unpackFile ${clang-tools-extra_src}
+    mv clang-tools-extra-* $sourceRoot/tools/extra
+  '';
+
+  buildInputs = [ cmake libedit libxml2 llvm python ];
+
+  cmakeFlags = [
+    "-DCMAKE_BUILD_TYPE=Release"
+    "-DCMAKE_CXX_FLAGS=-std=c++11"
+  ] ++
+  # Maybe with compiler-rt this won't be needed?
+  (stdenv.lib.optional stdenv.isLinux "-DGCC_INSTALL_PREFIX=${gcc}") ++
+  (stdenv.lib.optional (stdenv.cc.libc != null) "-DC_INCLUDE_DIRS=${stdenv.cc.libc}/include");
+
+  patches = [ ./purity.patch ];
+
+  postPatch = ''
+    sed -i -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' lib/Driver/Tools.cpp
+    sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' lib/Driver/ToolChains.cpp
+  '';
+
+  # Clang expects to find LLVMgold in its own prefix
+  # Clang expects to find sanitizer libraries in its own prefix
+  postInstall = ''
+    ln -sv ${llvm}/lib/LLVMgold.so $out/lib
+    ln -sv ${llvm}/lib/clang/${version}/lib $out/lib/clang/${version}/
+    ln -sv $out/bin/clang $out/bin/cpp
+  '';
+
+  enableParallelBuilding = true;
+
+  passthru = {
+    isClang = true;
+  } // stdenv.lib.optionalAttrs stdenv.isLinux {
+    inherit gcc;
+  };
+
+  meta = {
+    description = "A c, c++, objective-c, and objective-c++ frontend for the llvm compiler";
+    homepage    = http://llvm.org/;
+    license     = stdenv.lib.licenses.bsd3;
+    platforms   = stdenv.lib.platforms.all;
+  };
+}
diff --git a/pkgs/development/compilers/llvm/3.8/clang/purity.patch b/pkgs/development/compilers/llvm/3.8/clang/purity.patch
new file mode 100644
index 00000000000..2d1c68d865e
--- /dev/null
+++ b/pkgs/development/compilers/llvm/3.8/clang/purity.patch
@@ -0,0 +1,17 @@
+--- a/lib/Driver/Tools.cpp	2016-02-12 15:51:41.000000000 -0700
++++ b/lib/Driver/Tools.cpp	2016-03-08 15:39:06.790111122 -0700
+@@ -8833,15 +8833,6 @@
+     CmdArgs.push_back("-shared");
+   }
+ 
+-  if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
+-      Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb ||
+-      (!Args.hasArg(options::OPT_static) &&
+-       !Args.hasArg(options::OPT_shared))) {
+-    CmdArgs.push_back("-dynamic-linker");
+-    CmdArgs.push_back(Args.MakeArgString(
+-        D.DyldPrefix + getLinuxDynamicLinker(Args, ToolChain)));
+-  }
+-
+   CmdArgs.push_back("-o");
+   CmdArgs.push_back(Output.getFilename());