Fix dylib symlinks on Apple Silicon Macs

[speleo3]

Fixes #23143

[vadz]

Nice, thanks! I was looking at this too and thought we could achieve the same thing by replacing

libnames=\`cd lib ; ls -1 | grep '\.[[0-9]][[0-9]]*\.dylib\$'\`

with just something like

libnames=\`find lib -type -f -name '*.dylib'\`

because I have no idea why do we need the check for digits, but this works too.

[speleo3]

Your find lib -type -f solution looks more elegant 👍

Assuming that no library links to a symlink name (that would need to be changed with -change).

[speleo3]

Successful test build: https://anaconda.org/speleo3/wxwidgets/files

[speleo3]

This also worked for me:

libnames=\`find lib -type f -name '*.dylib' | xargs basename\`

[vadz]

Please let me know which one do you prefer and if it's the find one, could you please (force) push to this PR so that I could be sure that I apply exactly what you tested? TIA!

BTW, a slight simplification would be to use

libnames=\`find lib -type f -name '*.dylib' -exec basename {} \; \`

but I'm not quite sure about the quoting.

[speleo3]

I have a slight preference for the current solution. I like that it's very explicit about not running install_name_tool on symlinks.

So I think this is ready for merging.

[vadz]

Thanks again, pushing this to master and will also include it in the upcoming 3.2.5 (just in time!).