Merge remote-tracking branch 'origin/staging' into gcc-4.9

Conflicts:
	pkgs/build-support/cc-wrapper/default.nix
	pkgs/development/libraries/wayland/default.nix
	pkgs/development/tools/build-managers/cmake/default.nix
	pkgs/top-level/all-packages.nix

pkgs/development/compilers/gcc/gfortran-darwin.nix

@@ -0,0 +1,27 @@
+# This is a derivation specific to OS X (Darwin). It may work on other
+# systems as well but has not been tested.
+{gmp, mpfr, libmpc, fetchurl, stdenv}:
+
+stdenv.mkDerivation rec {
+  name = "gfortran-${version}";
+  version = "5.1.0";
+  buildInputs = [gmp mpfr libmpc];
+  src = fetchurl {
+    url = "mirror://gnu/gcc/gcc-${version}/gcc-${version}.tar.bz2";
+    sha256 = "1bd5vj4px3s8nlakbgrh38ynxq4s654m6nxz7lrj03mvkkwgvnmp";
+  };
+  configureFlags = ''
+    --enable-languages=fortran --enable-checking=release --disable-bootstrap
+    --with-gmp=${gmp}
+    --with-mpfr=${mpfr}
+    --with-mpc=${libmpc}
+  '';
+  makeFlags = ["CC=clang"];
+  passthru.cc = stdenv.cc.cc;
+  meta = with stdenv.lib; {
+    description = "GNU Fortran compiler, part of the GNU Compiler Collection.";
+    homepage    = "https://gcc.gnu.org/fortran/";
+    license     = licenses.gpl3Plus;
+    platforms   = platforms.darwin;
+  };
+}