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/opensaml-cpp/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchgit, autoreconfHook, pkg-config
+, boost, openssl, log4shib, xercesc, xml-security-c, xml-tooling-c, zlib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "opensaml-cpp";
+  version = "3.0.1";
+
+  src = fetchgit {
+    url = "https://git.shibboleth.net/git/cpp-opensaml.git";
+    rev = version;
+    sha256 = "0ms3sqmwqkrqb92d7jy2hqwnz5yd7cbrz73n321jik0jilrwl5w8";
+  };
+
+  buildInputs = [
+    boost openssl log4shib xercesc xml-security-c xml-tooling-c zlib
+  ];
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+
+  configureFlags = [ "--with-xmltooling=${xml-tooling-c}" ];
+
+  NIX_CFLAGS_COMPILE = [ "-std=c++14" ];
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    homepage    = "https://shibboleth.net/products/opensaml-cpp.html";
+    description = "A low-level library written in C++ that provides support for producing and consuming SAML messages";
+    platforms   = platforms.unix;
+    license     = licenses.asl20;
+    maintainers = [ maintainers.jammerful ];
+  };
+}