-ENV_TARGET=$(rustc --version --verbose | grep host | awk '{ print $2 }' | sed 's/-/_/g')
-export CFLAGS_$ENV_TARGET="$BASE_CFLAGS -march=sandybridge -mcpu=sandybridge -mtune=sandybridge"
+
+BASE_CFLAGS="$BASE_CFLAGS -frandom-seed=42"
+LOCAL_CFLAGS="-Wall -Wno-nullability-completeness -pthread -Iinclude/"
+
+if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
+ export MACOSX_DEPLOYMENT_TARGET=10.9
+ LOCAL_CFLAGS="$LOCAL_CFLAGS -isysroot$(xcrun --show-sdk-path) -mmacosx-version-min=10.9"
+ BASE_CFLAGS="$BASE_CFLAGS -isysroot$(xcrun --show-sdk-path) -mmacosx-version-min=10.9"
+ # Targeting aarch64 appears to be supported only starting with Big Sur, so check it before use
+ clang -o /dev/null $BASE_CFLAGS --target=aarch64-apple-darwin -mcpu=apple-a14 genbindings_path_map_test_file.c &&
+ export CFLAGS_aarch64_apple_darwin="$BASE_CFLAGS --target=aarch64-apple-darwin -mcpu=apple-a14" ||
+ echo "WARNING: Can not build targeting aarch64-apple-darin. Upgrade to Big Sur or try upstream clang"
+fi
+