uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/libraries/xvidcore/default.nix

@@ -0,0 +1,47 @@
+{ lib, stdenv, fetchurl, yasm, autoconf, automake, libtool }:
+
+with lib;
+stdenv.mkDerivation rec {
+  pname = "xvidcore";
+  version = "1.3.7";
+
+  src = fetchurl {
+    url = "https://downloads.xvid.com/downloads/${pname}-${version}.tar.bz2";
+    sha256 = "1xyg3amgg27zf7188kss7y248s0xhh1vv8rrk0j9bcsd5nasxsmf";
+  };
+
+  preConfigure = ''
+    # Configure script is not in the root of the source directory
+    cd build/generic
+  '' + optionalString stdenv.isDarwin ''
+    # Undocumented darwin hack
+    substituteInPlace configure --replace "-no-cpp-precomp" ""
+  '';
+
+  configureFlags = [ ]
+    # Undocumented darwin hack (assembly is probably disabled due to an
+    # issue with nasm, however yasm is now used)
+    ++ optional stdenv.isDarwin "--enable-macosx_module --disable-assembly";
+
+  nativeBuildInputs = [ ]
+    ++ optional (!stdenv.isDarwin) yasm;
+
+  buildInputs = [ ]
+    # Undocumented darwin hack
+    ++ optionals stdenv.isDarwin [ autoconf automake libtool ];
+
+  # Don't remove static libraries (e.g. 'libs/*.a') on darwin.  They're needed to
+  # compile ffmpeg (and perhaps other things).
+  postInstall = optionalString (!stdenv.isDarwin) ''
+    rm $out/lib/*.a
+  '';
+
+  meta = {
+    description = "MPEG-4 video codec for PC";
+    homepage    = "https://www.xvid.com/";
+    license     = licenses.gpl2;
+    maintainers = with maintainers; [ codyopel lovek323 ];
+    platforms   = platforms.all;
+  };
+}
+