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/os-specific/linux/sgx/samples/default.nix

@@ -0,0 +1,109 @@
+{ stdenv
+, lib
+, makeWrapper
+, sgx-sdk
+, sgx-psw
+, which
+  # "SIM" or "HW"
+, sgxMode
+}:
+let
+  isSimulation = sgxMode == "SIM";
+  buildSample = name: stdenv.mkDerivation {
+    pname = name;
+    version = sgxMode;
+
+    src = sgx-sdk.out;
+    sourceRoot = "${sgx-sdk.name}/share/SampleCode/${name}";
+
+    nativeBuildInputs = [
+      makeWrapper
+      which
+    ];
+
+    buildInputs = [
+      sgx-sdk
+    ];
+
+    # The samples don't have proper support for parallel building
+    # causing them to fail randomly.
+    enableParallelBuilding = false;
+
+    buildFlags = [
+      "SGX_MODE=${sgxMode}"
+    ];
+
+    installPhase = ''
+      runHook preInstall
+
+      mkdir -p $out/{bin,lib}
+      install -m 755 app $out/bin
+      install *.so $out/lib
+
+      wrapProgram "$out/bin/app" \
+        --chdir "$out/lib" \
+        ${lib.optionalString (!isSimulation)
+        ''--prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath [ sgx-psw ]}"''}
+
+      runHook postInstall
+    '';
+
+    # Breaks the signature of the enclaves
+    dontFixup = true;
+
+    # We don't have access to real SGX hardware during the build
+    doInstallCheck = isSimulation;
+    installCheckPhase = ''
+      runHook preInstallCheck
+
+      pushd /
+      echo a | $out/bin/app
+      popd
+
+      runHook preInstallCheck
+    '';
+  };
+in
+{
+  cxx11SGXDemo = buildSample "Cxx11SGXDemo";
+  localAttestation = (buildSample "LocalAttestation").overrideAttrs (oldAttrs: {
+    installPhase = ''
+      runHook preInstall
+
+      mkdir -p $out/{bin,lib}
+      install -m 755 bin/app* $out/bin
+      install bin/*.so $out/lib
+
+      for bin in $out/bin/*; do
+        wrapProgram $bin \
+          --chdir "$out/lib" \
+          ${lib.optionalString (!isSimulation)
+          ''--prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath [ sgx-psw ]}"''}
+      done
+
+      runHook postInstall
+    '';
+  });
+  powerTransition = buildSample "PowerTransition";
+  protobufSGXDemo = buildSample "ProtobufSGXDemo";
+  remoteAttestation = (buildSample "RemoteAttestation").overrideAttrs (oldAttrs: {
+    # Makefile sets rpath to point to $TMPDIR
+    preFixup = ''
+      patchelf --remove-rpath $out/bin/app
+    '';
+
+    postInstall = ''
+      install sample_libcrypto/*.so $out/lib
+    '';
+  });
+  sampleEnclave = buildSample "SampleEnclave";
+  sampleEnclavePCL = buildSample "SampleEnclavePCL";
+  sampleEnclaveGMIPP = buildSample "SampleEnclaveGMIPP";
+  sealUnseal = (buildSample "SealUnseal").overrideAttrs (oldAttrs: {
+    prePatch = ''
+      substituteInPlace App/App.cpp \
+        --replace '"sealed_data_blob.txt"' '"/tmp/sealed_data_blob.txt"'
+    '';
+  });
+  switchless = buildSample "Switchless";
+}