gnucash/util/ci/macos-ci-deps

For creating the macOS dependency tarball required by the Github CI tests.

Requirements:

• Administrator privs on your Mac.
• Project admin privs for https://sourceforge.net/projects/gnucash.
• Jhbuild doesn't cross-compile well so you need a mac with the same architecture as the github VM. Check here for the current configuration. At the time of this writing it's x86_64.
• Xcode or command-line tools (install the latter with sudo xcode-select -install). To build this tarball you must be running the same or newer macOS version as the Github VM.

Procedure:

• Set up a Gtk-OSX build environment following the GnuCash Quartz Build instructions.
• Retrieve jhbuildrc-custom and put it in ~/.config.
• Set modules = _modules_deps on the appropriate line of jhbuildrc-custom.
• If you are running a newer version of macOS than the Github actions virtual environment change the setup_SDK() line at the bottom of jhbuildrc-custom to setup_SDK('11'), substituting the VM's macOS version for '11'.
• Create the directory /Users/runner/ and make yourself the owner:

  sudo mkdir /Users/runner
  sudo chown me /Users/runner
  mkdir /Users/runner/gnucash
  

  Substituting your own userid for 'me'.
• Run util/ci/macos-ci-deps/make-macos-deps-tarball.sh gnucash-4.2-mac-dependencies.tar.xz from the root of the source directory, changing the tarball's name if appropriate.
• Upload the resulting tarball to the Dependencies folder in the Gnucash files section on SourceForge.
• If necessary modify `.github/workflows/mac-tests.yaml to reflect the tarball's URI.