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/aflplusplus/qemu.nix

@@ -0,0 +1,83 @@
+{ lib, stdenv, fetchurl, aflplusplus, python3, zlib, pkg-config, glib, perl
+, texinfo, libuuid, flex, bison, pixman, autoconf
+}:
+
+with lib;
+
+let
+  qemuName = "qemu-3.1.0";
+  cpuTarget = if stdenv.targetPlatform.system == "x86_64-linux" then "x86_64-linux-user"
+    else if stdenv.targetPlatform.system == "i686-linux" then "i386-linux-user"
+    else throw "aflplusplus: no support for ${stdenv.targetPlatform.system}!";
+in
+stdenv.mkDerivation {
+  name = "aflplusplus-${qemuName}";
+
+  srcs = [
+    (fetchurl {
+      url = "http://wiki.qemu.org/download/${qemuName}.tar.bz2";
+      sha256 = "08frr1fdjx8qcfh3fafn10kibdwbvkqqvfl7hpqbm7i9dg4f1zlq";
+    })
+    aflplusplus.src
+  ];
+
+  sourceRoot = qemuName;
+
+  postUnpack = ''
+    chmod -R +w ${aflplusplus.src.name}
+    for f in ${aflplusplus.src.name}/qemu_mode/patches/* ; do
+      sed -E -i 's|(\.\./)+patches/([a-z-]+\.h)|\2|g' $f
+      sed -E -i 's|\.\./\.\./config\.h|afl-config.h|g' $f
+      sed -E -i 's|\.\./\.\./include/cmplog\.h|afl-cmplog.h|g' $f
+    done
+    cp ${aflplusplus.src.name}/qemu_mode/patches/*.h $sourceRoot/
+    cp ${aflplusplus.src.name}/types.h $sourceRoot/afl-types.h
+    substitute ${aflplusplus.src.name}/config.h $sourceRoot/afl-config.h \
+      --replace "types.h" "afl-types.h"
+    substitute ${aflplusplus.src.name}/include/cmplog.h $sourceRoot/afl-cmplog.h \
+      --replace "config.h" "afl-config.h" \
+      --replace "forkserver.h" "afl-forkserver.h"
+    substitute ${aflplusplus.src.name}/include/forkserver.h $sourceRoot/afl-forkserver.h \
+      --replace "types.h" "afl-types.h"
+
+    cat ${aflplusplus.src.name}/qemu_mode/patches/*.diff > all.patch
+  '';
+
+  nativeBuildInputs = [
+    python3 perl pkg-config flex bison autoconf texinfo
+  ];
+
+  buildInputs = [
+    zlib glib pixman libuuid
+  ];
+
+  enableParallelBuilding = true;
+
+  patches = [
+    # patches extracted from aflplusplus source
+    "../all.patch"
+    # nix-specific patches to make installation more well-behaved
+    ./qemu-no-etc-install.patch
+  ];
+
+  configureFlags =
+    [ "--disable-system"
+      "--enable-linux-user"
+      "--disable-gtk"
+      "--disable-sdl"
+      "--disable-vnc"
+      "--disable-kvm"
+      "--target-list=${cpuTarget}"
+      "--enable-pie"
+      "--sysconfdir=/etc"
+      "--localstatedir=/var"
+    ];
+
+  meta = with lib; {
+    homepage = "https://www.qemu.org/";
+    description = "Fork of QEMU with AFL++ instrumentation support";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ ris ];
+    platforms = platforms.linux;
+  };
+}