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/science/math/tensorflow/bin.nix

@@ -0,0 +1,74 @@
+{ lib, stdenv
+, fetchurl
+, addOpenGLRunpath
+, cudaSupport ? false, cudaPackages ? {}
+, symlinkJoin
+}:
+
+with lib;
+let
+  broken = !stdenv.isLinux && !stdenv.isDarwin;
+
+  inherit (cudaPackages) cudatoolkit cudnn;
+
+  tfType = if cudaSupport then "gpu" else "cpu";
+
+  system =
+    if stdenv.isLinux then "linux"
+    else "darwin";
+
+  platform =  "x86_64";
+
+  rpath = makeLibraryPath ([stdenv.cc.libc stdenv.cc.cc.lib]
+                           ++ optionals cudaSupport [ cudatoolkit.out cudatoolkit.lib cudnn ]);
+
+  packages = import ./binary-hashes.nix;
+
+  patchLibs =
+    if stdenv.isDarwin
+    then ''
+      install_name_tool -id $out/lib/libtensorflow.dylib $out/lib/libtensorflow.dylib
+      install_name_tool -id $out/lib/libtensorflow_framework.dylib $out/lib/libtensorflow_framework.dylib
+    ''
+    else ''
+      patchelf --set-rpath "${rpath}:$out/lib" $out/lib/libtensorflow.so
+      patchelf --set-rpath "${rpath}" $out/lib/libtensorflow_framework.so
+      ${optionalString cudaSupport ''
+        addOpenGLRunpath $out/lib/libtensorflow.so $out/lib/libtensorflow_framework.so
+      ''}
+    '';
+
+in stdenv.mkDerivation rec {
+  pname = "libtensorflow";
+  inherit (packages) version;
+
+  src = fetchurl packages."${tfType}-${system}-${platform}";
+
+  nativeBuildInputs = optional cudaSupport addOpenGLRunpath;
+
+  # Patch library to use our libc, libstdc++ and others
+  buildCommand = ''
+    mkdir -pv $out
+    tar -C $out -xzf $src
+    chmod -R +w $out
+    ${patchLibs}
+
+    # Write pkg-config file.
+    mkdir $out/lib/pkgconfig
+    cat > $out/lib/pkgconfig/tensorflow.pc << EOF
+    Name: TensorFlow
+    Version: ${version}
+    Description: Library for computation using data flow graphs for scalable machine learning
+    Requires:
+    Libs: -L$out/lib -ltensorflow
+    Cflags: -I$out/include/tensorflow
+    EOF
+  '';
+
+  meta = {
+    description = "C API for TensorFlow";
+    homepage = "https://www.tensorflow.org/install/lang_c";
+    license = licenses.asl20;
+    platforms = [ "x86_64-linux" "x86_64-darwin" ];
+  };
+}