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/mkl/test/default.nix

@@ -0,0 +1,41 @@
+{ stdenv
+, pkg-config
+, mkl
+
+, enableStatic ? false
+, execution ? "seq"
+}:
+
+let
+  linkType = if enableStatic then "static" else "dynamic";
+in stdenv.mkDerivation {
+  pname = "mkl-test";
+  version = mkl.version;
+
+  src = ./.;
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ (mkl.override { inherit enableStatic; }) ];
+
+  doCheck = true;
+
+  buildPhase = ''
+    # Check regular Nix build.
+    gcc test.c -o test $(pkg-config --cflags --libs mkl-${linkType}-ilp64-${execution})
+
+    # Clear flags to ensure that we are purely relying on options
+    # provided by pkg-config.
+    NIX_CFLAGS_COMPILE="" \
+    NIX_LDFLAGS="" \
+      gcc test.c -o test $(pkg-config --cflags --libs mkl-${linkType}-ilp64-${execution})
+  '';
+
+  installPhase = ''
+    touch $out
+  '';
+
+  checkPhase = ''
+    ./test
+  '';
+}

pkgs/development/libraries/science/math/mkl/test/test.c

@@ -0,0 +1,12 @@
+#include <assert.h>
+
+#include <mkl_cblas.h>
+
+int main() {
+  float u[] = {1., 2., 3.};
+  float v[] = {4., 5., 6.};
+
+  float dp = cblas_sdot(3, u, 1, v, 1);
+
+  assert(dp == 32.);
+}