Build and code-sign for MacOS

[Motti-Shneor]

no binaries for MacOS are offered, and the only I could find was 32bit build that was not code-signed.
So I created an Xcode project for bchunck, and configured it for up-to-date 64bit and code-signing using the builder's certificates. I'd like to offer a pull-request, but I don't know how to do it. Do I need to obtain special rights to push a branch with my addition?

[sttng]

I just downloaded the source and build with Xcode command line tools using just make under macOS 10.14.6.
Is an Xcode project really needed ?