diff --git a/pkgs/development/compilers/gcc-4.4/default.nix b/pkgs/development/compilers/gcc-4.4/default.nix
index 299c4cb9b39..fef453e4493 100644
--- a/pkgs/development/compilers/gcc-4.4/default.nix
+++ b/pkgs/development/compilers/gcc-4.4/default.nix
@@ -88,8 +88,14 @@ stdenv.mkDerivation ({
 
   patches =
     [./pass-cxxcpp.patch
-#     ./libtool-glibc.patch   # some libraries don't let the proper -Btargetglibcpath pass
-     ./libstdc++-target.patch # (fixed in gcc 4.4.3) bad mixture of build/target flags
+
+     # libmudflap and libstdc++ receive the build CPP,
+     # and not the target.
+     # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42279
+     ./target-cpp.patch
+
+     # (fixed in gcc 4.4.3) bad mixture of build/target flags
+     ./libstdc++-target.patch
      ]
     ++ optional noSysDirs ./no-sys-dirs.patch;
 
diff --git a/pkgs/development/compilers/gcc-4.4/target-cpp.patch b/pkgs/development/compilers/gcc-4.4/target-cpp.patch
new file mode 100644
index 00000000000..ab0f0ee51aa
--- /dev/null
+++ b/pkgs/development/compilers/gcc-4.4/target-cpp.patch
@@ -0,0 +1,12 @@
+diff --git a/Makefile.in b/Makefile.in
+index 8545b60..1fab64d 100644
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -231,6 +231,7 @@ BASE_TARGET_EXPORTS = \
+ 	CC="$(CC_FOR_TARGET)"; export CC; \
+ 	CFLAGS="$(CFLAGS_FOR_TARGET) $(SYSROOT_CFLAGS_FOR_TARGET) $(DEBUG_PREFIX_CFLAGS_FOR_TARGET)"; export CFLAGS; \
+ 	CONFIG_SHELL="$(SHELL)"; export CONFIG_SHELL; \
++	CPP="$(CC_FOR_TARGET) -E"; export CPP; \
+ 	CPPFLAGS="$(CPPFLAGS_FOR_TARGET)"; export CPPFLAGS; \
+ 	CXXFLAGS="$(CXXFLAGS_FOR_TARGET) $(SYSROOT_CFLAGS_FOR_TARGET) $(DEBUG_PREFIX_CFLAGS_FOR_TARGET)"; export CXXFLAGS; \
+ 	GCJ="$(GCJ_FOR_TARGET)"; export GCJ; \