diff --git a/pkgs/development/compilers/gcc-4.4/default.nix b/pkgs/development/compilers/gcc-4.4/default.nix
index 358e5212407..85a3aee4c89 100644
--- a/pkgs/development/compilers/gcc-4.4/default.nix
+++ b/pkgs/development/compilers/gcc-4.4/default.nix
@@ -57,24 +57,34 @@ let version = "4.4.3";
 
     javaAwtGtk = langJava && gtk != null;
 
-    withCPU = if cross ? cpu then " --with-cpu=${cross.cpu}" else "";
+    /* Cross-gcc settings */
+    gccArch = stdenv.lib.attrByPath [ "gcc" "arch" ] null cross;
+    gccCpu = stdenv.lib.attrByPath [ "gcc" "cpu" ] null cross;
+    gccAbi = stdenv.lib.attrByPath [ "gcc" "abi" ] null cross;
+    withArch = if gccArch != null then " --with-arch=${gccArch}" else "";
+    withCpu = if gccCpu != null then " --with-cpu=${gccCpu}" else "";
+    withAbi = if gccAbi != null then " --with-abi=${gccAbi}" else "";
 
     crossConfigureFlags =
       "--target=${cross.config}" +
-      withCPU +
+      withArch +
+      withCpu +
+      withAbi +
       (if crossStageStatic then
         " --disable-libssp --disable-nls" +
         " --without-headers" +
         " --disable-threads " +
         " --disable-libmudflap " +
         " --disable-libgomp " +
-        " --disable-shared"
+        " --disable-shared" +
+        " --disable-decimal-float" # libdecnumber requires libc
         else
         " --with-headers=${libcCross}/include" +
         " --enable-__cxa_atexit" +
         " --enable-long-long" +
         " --enable-threads=posix" +
-        " --enable-nls"
+        " --enable-nls" +
+        " --disable-decimal-float" # No final libdecnumber (it may work only in 386)
         );
     stageNameAddon = if (crossStageStatic) then "-stage-static" else
       "-stage-final";
diff --git a/pkgs/top-level/release-cross.nix b/pkgs/top-level/release-cross.nix
index 37ecda0e027..571484f0540 100644
--- a/pkgs/top-level/release-cross.nix
+++ b/pkgs/top-level/release-cross.nix
@@ -105,7 +105,6 @@ let
     arch = "sparc64";
     float = "hard";
     withTLS = true;
-    cpu = "ultrasparc";
     libc = "glibc";
     platform = {
         name = "ultrasparc";
@@ -118,6 +117,7 @@ let
         uboot = null;
     };
     openssl.system = "linux64-sparcv9";
+    gcc.cpu = "ultrasparc";
   };
 in {
   crossUltraSparcLinux = mapTestOnCross crossSystem basic;