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/pth/default.nix

@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  pname = "pth";
+  version = "2.0.7";
+
+  src = fetchurl {
+    url = "mirror://gnu/pth/pth-${version}.tar.gz";
+    sha256 = "0ckjqw5kz5m30srqi87idj7xhpw6bpki43mj07bazjm2qmh3cdbj";
+  };
+
+  preConfigure = lib.optionalString stdenv.isAarch32 ''
+    configureFlagsArray=("CFLAGS=-DJB_SP=8 -DJB_PC=9")
+  '' + lib.optionalString (stdenv.hostPlatform.libc == "glibc") ''
+    configureFlagsArray+=("ac_cv_check_sjlj=ssjlj")
+  '';
+
+  # Fails parallel build due to missing dependency on autogenrated
+  # 'pth_p.h' file:
+  #     ./shtool scpp -o pth_p.h ...
+  #     ./libtool --mode=compile --quiet gcc -c -I. -O2 -pipe pth_uctx.c
+  #     pth_uctx.c:31:10: fatal error: pth_p.h: No such file
+  enableParallelBuilding = false;
+
+  meta = with lib; {
+    description = "The GNU Portable Threads library";
+    homepage = "https://www.gnu.org/software/pth";
+    license = licenses.lgpl21Plus;
+    platforms = platforms.all;
+  };
+}