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/darwin/apple-sdk/framework-setup-hook.sh

@@ -0,0 +1,42 @@
+# On macOS, frameworks are linked to the system CoreFoundation but
+# dynamic libraries built with nix use a pure version of CF this
+# causes segfaults for binaries that depend on it at runtime.  This
+# can be solved in two ways.
+# 1. Rewrite references to the pure CF using this setup hook, this
+# works for the simple case but this can still cause problems if other
+# dependencies (eg. python) use the pure CF.
+# 2. Create a wrapper for the binary that sets DYLD_FRAMEWORK_PATH to
+# /System/Library/Frameworks.  This will make everything load the
+# system's CoreFoundation framework while still keeping the
+# dependencies pure for other packages.
+
+fixupOutputHooks+=('fixDarwinFrameworksIn $prefix')
+
+fixDarwinFrameworks() {
+    local systemPrefix='/System/Library/Frameworks'
+
+    for fn in "$@"; do
+        if [ -L "$fn" ]; then continue; fi
+        echo "$fn: fixing dylib"
+
+        for framework in $(otool -L "$fn" | awk '/CoreFoundation\.framework/ {print $1}'); do
+          install_name_tool -change "$framework" "$systemPrefix/CoreFoundation.framework/Versions/A/CoreFoundation" "$fn" >&2
+        done
+    done
+}
+
+fixDarwinFrameworksIn() {
+    local dir="$1"
+    fixDarwinFrameworks $(find "$dir" -name "*.dylib")
+}
+
+
+# This configures the stdenv to use /System/Library/Frameworks/CoreFoundation.framework
+# instead of the nix version by including the system frameworks path
+# as an rpath entry when creating binaries.
+
+useSystemCoreFoundationFramework () {
+  export NIX_COREFOUNDATION_RPATH=/System/Library/Frameworks
+}
+
+addEnvHooks "$hostOffset" useSystemCoreFoundationFramework