diff --git a/pkgs/development/compilers/gcc-4.3/default.nix b/pkgs/development/compilers/gcc-4.3/default.nix
index df4aca0bf558..a7c3c21fb51b 100644
--- a/pkgs/development/compilers/gcc-4.3/default.nix
+++ b/pkgs/development/compilers/gcc-4.3/default.nix
@@ -1,10 +1,12 @@
 { stdenv, fetchurl, noSysDirs
 , langC ? true, langCC ? true, langFortran ? false, langTreelang ? false
+, langJava ? false
 , profiledCompiler ? false
 , staticCompiler ? false
 , texinfo ? null
 , gmp, mpfr
 , bison ? null, flex ? null
+, zlib ? null, boehmgc ? null
 , enableMultilib ? false
 , name ? "gcc"
 }:
@@ -15,7 +17,7 @@ with stdenv.lib;
 
 let version = "4.3.3"; in
 
-stdenv.mkDerivation {
+stdenv.mkDerivation ({
   name = "${name}-${version}";
   
   builder = ./builder.sh;
@@ -32,6 +34,10 @@ stdenv.mkDerivation {
     optional langFortran (fetchurl {
       url = "mirror://gcc/releases/gcc-${version}/gcc-fortran-${version}.tar.bz2";
       sha256 = "1b2wbysviyh7l9fqbd6zy5y6y89xgysy99gr8wx8xkc1hy2nwdsq";
+    }) ++
+    optional langJava (fetchurl {
+      url = "mirror://gcc/releases/gcc-${version}/gcc-java-${version}.tar.bz2";
+      sha256 = "1mlazpydd9qv7zwxkbb5sw3clfawfndhcc3f5lzycminvn6qmfkb";
     });
     
   patches =
@@ -42,7 +48,10 @@ stdenv.mkDerivation {
   inherit noSysDirs profiledCompiler staticCompiler;
 
   buildInputs = [texinfo gmp mpfr]
-    ++ optionals langTreelang [bison flex];
+    ++ (optionals langTreelang [bison flex])
+    ++ (optional (zlib != null) zlib)
+    ++ (optional (boehmgc != null) boehmgc)
+    ;
 
   configureFlags = "
     ${if enableMultilib then "" else "--disable-multilib"}
@@ -53,6 +62,7 @@ stdenv.mkDerivation {
         (  optional langC        "c"
         ++ optional langCC       "c++"
         ++ optional langFortran  "fortran"
+        ++ optional langJava     "java"
         ++ optional langTreelang "treelang"
         )
       )
@@ -71,4 +81,10 @@ stdenv.mkDerivation {
     license = "GPL/LGPL";
     description = "GNU Compiler Collection, 4.3.x";
   };
-}
+} // (if langJava then {
+  postConfigure = ''
+    make configure-gcc
+    sed -i gcc/Makefile -e 's@^CFLAGS = .*@& -I${zlib}/include@ ; s@^LDFLAGS = .*@& -L${zlib}/lib@'
+    sed -i gcc/Makefile -e 's@^CFLAGS = .*@& -I${boehmgc}/include@ ; s@^LDFLAGS = .*@& -L${boehmgc}/lib -lgc@'
+  '';
+} else {}))
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2aa57449e6ff..fc95f7ef0b0c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1639,6 +1639,18 @@ let
     profiledCompiler = false;
   });
 
+  gcj = gcj43;
+
+  gcj43 = wrapGCC (gcc43_real.gcc.override {
+    name = "gcj";
+    langJava = true;
+    langFortran = false;
+    langCC = true;
+    langC = false;
+    profiledCompiler = false;
+    inherit zlib boehmgc;
+  });
+
   # This new ghc stuff is under heavy development and will change !
   # ===============================================================