Update ghdl mcode to 0.33.

(cherry picked from commit e9d6aadc51ecdd274cd383a99ea840a94b58d954)

pkgs/development/compilers/ghdl/default.nix

@@ -1,58 +1,28 @@
 { stdenv, fetchurl, gnat, zlib }:
 
+# I think that mcode can only generate x86 code,
+# so it fails to link pieces on x86_64.
 assert stdenv.system == "i686-linux";
 
 let
-  version = "0.31";
+  version = "0.33";
 in
 stdenv.mkDerivation rec {
   name = "ghdl-mcode-${version}";
 
   src = fetchurl {
-    url = "mirror://sourceforge/ghdl/ghdl-${version}.tar.gz";
+    url = "https://github.com/tgingold/ghdl/archive/v${version}.tar.gz";
-    sha256 = "1v0l9h6906b0bvnwfi2qg5nz9vjg80isc5qgjxr1yqxpkfm2xcf0";
+    sha256 = "09yvgqyglbakd74v2dgr470clzm744i232nixyffcds55vkij5da";
   };
 
   buildInputs = [ gnat zlib ];
 
-  # Tarbomb
-  preUnpack = ''
-    mkdir ghdl
-    cd ghdl
-  '';
-
-  sourceRoot = "translate/ghdldrv";
-
   patchPhase = ''
-    sed -i 's,$$curdir/lib,'$out'/share/ghdl_mcode/translate/lib,' Makefile
+    # Disable warnings-as-errors, because there are warnings (unused things)
+    sed -i s/-gnatwae/-gnatwa/ Makefile.in ghdl.gpr.in
   '';
 
-  postBuild = ''
+  enableParallelBuilding = true;
-    # Build the LIB
-    ln -s ghdl_mcode ghdl
-    make install.mcode
-  '';
-
-  installPhase = ''
-    mkdir -p $out/bin
-    cp ghdl_mcode $out/bin
-
-    mkdir -p $out/share/ghdl_mcode/translate
-    cp -R ../lib $out/share/ghdl_mcode/translate
-    cp -R ../../libraries $out/share/ghdl_mcode
-
-    mkdir -p $out/share/man/man1
-    cp ../../doc/ghdl.1 $out/share/man/man1/ghdl_mcode.1
-
-    # Ghdl has some timestamps checks, storing file timestamps in '.cf' files.
-    # As we will change the timestamps to 1970-01-01 00:00:01, we also set the
-    # content of that .cf to that value. This way ghdl does not complain on
-    # the installed object files from the basic libraries (ieee, ...)
-    pushd $out
-    find . -name "*.cf" -exec \
-        sed 's/[0-9]*\.000" /19700101000001.000" /g' -i {} \;
-    popd
-  '';
 
   meta = {
     homepage = "http://sourceforge.net/p/ghdl-updates/wiki/Home/";