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/tools/security/afl/qemu.nix

@@ -0,0 +1,79 @@
+{ lib, stdenv, fetchurl, afl, python2, zlib, pkg-config, glib, perl
+, texinfo, libuuid, flex, bison, pixman, autoconf
+}:
+
+with lib;
+
+let
+  cpuTarget = if stdenv.hostPlatform.system == "x86_64-linux" then "x86_64-linux-user"
+    else if stdenv.hostPlatform.system == "i686-linux" then "i386-linux-user"
+    else throw "afl: no support for ${stdenv.hostPlatform.system}!";
+in
+stdenv.mkDerivation rec {
+  pname = "afl-qemu";
+  version = "2.10.0";
+
+  srcs = [
+    (fetchurl {
+      url = "http://wiki.qemu.org/download/qemu-${version}.tar.bz2";
+      sha256 = "0j3dfxzrzdp1w21k21fjvmakzc6lcha1rsclaicwqvbf63hkk7vy";
+    })
+    afl.src
+  ];
+
+  sourceRoot = "qemu-${version}";
+
+  postUnpack = ''
+    cp ${afl.src.name}/types.h $sourceRoot/afl-types.h
+    substitute ${afl.src.name}/config.h $sourceRoot/afl-config.h \
+      --replace "types.h" "afl-types.h"
+    substitute ${afl.src.name}/qemu_mode/patches/afl-qemu-cpu-inl.h $sourceRoot/afl-qemu-cpu-inl.h \
+      --replace "../../config.h" "afl-config.h"
+    substituteInPlace ${afl.src.name}/qemu_mode/patches/cpu-exec.diff \
+      --replace "../patches/afl-qemu-cpu-inl.h" "afl-qemu-cpu-inl.h"
+  '';
+
+  nativeBuildInputs = [
+    python2 perl pkg-config flex bison autoconf texinfo
+  ];
+
+  buildInputs = [
+    zlib glib pixman libuuid
+  ];
+
+  enableParallelBuilding = true;
+
+  patches = [
+    # patches extracted from afl source
+    "../${afl.src.name}/qemu_mode/patches/cpu-exec.diff"
+    "../${afl.src.name}/qemu_mode/patches/elfload.diff"
+    "../${afl.src.name}/qemu_mode/patches/syscall.diff"
+    "../${afl.src.name}/qemu_mode/patches/configure.diff"
+    "../${afl.src.name}/qemu_mode/patches/memfd.diff"
+    # nix-specific patches to make installation more well-behaved
+    ./qemu-patches/no-etc-install.patch
+    # patch for fixing qemu build on glibc >= 2.30
+    ./qemu-patches/syscall-glibc2_30.diff
+  ];
+
+  configureFlags =
+    [ "--disable-system"
+      "--enable-linux-user"
+      "--disable-gtk"
+      "--disable-sdl"
+      "--disable-vnc"
+      "--disable-kvm"
+      "--target-list=${cpuTarget}"
+      "--enable-pie"
+      "--sysconfdir=/etc"
+      "--localstatedir=/var"
+    ];
+
+  meta = with lib; {
+    homepage = "http://www.qemu.org/";
+    description = "Fork of QEMU with AFL instrumentation support";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ thoughtpolice ];
+    platforms = platforms.linux;
+  };
+}