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/civetweb/default.nix

@@ -0,0 +1,46 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+}:
+
+stdenv.mkDerivation rec {
+  pname = "civetweb";
+  version = "1.15";
+
+  src = fetchFromGitHub {
+    owner = pname;
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-Qh6BGPk7a01YzCeX42+Og9M+fjXRs7kzNUCyT4mYab4=";
+  };
+
+  outputs = [ "out" "dev" ];
+
+  strictDeps = true;
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  # The existence of the "build" script causes `mkdir -p build` to fail:
+  #   mkdir: cannot create directory 'build': File exists
+  preConfigure = ''
+    rm build
+  '';
+
+  cmakeFlags = [
+    "-DBUILD_SHARED_LIBS=ON"
+    "-DCIVETWEB_ENABLE_CXX=ON"
+    "-DCIVETWEB_ENABLE_IPV6=ON"
+
+    # The civetweb unit tests rely on downloading their fork of libcheck.
+    "-DCIVETWEB_BUILD_TESTING=OFF"
+  ];
+
+  meta = {
+    description = "Embedded C/C++ web server";
+    homepage = "https://github.com/civetweb/civetweb";
+    license = [ lib.licenses.mit ];
+  };
+}