ccl: clang-9.0 dependency hinders installation on Sonoma 14.5 x86_64

[kreuter (Richard Kreuter)]

clang-9.0 doesn't build successfully on MacOS Sonoma 14.5 x86_64. Does the ccl port have to stay on that clang version? (I was able to successfully install the port using a local portfile that called for Apple's clang 15.0. I don't know if that's appropriate for anybody else, just a data point.)

[ryandesign (Ryan Carsten Schmidt)]

In general it's wrong for a port to whitelist a compiler as ccl does here. Instead ports should blacklist compilers that don't work and let MacPorts pick the next best compiler.

The whitelisting of clang 9 was added in [6e8dcf5b19bd6a31a175096f9b4dfdcb63326930/macports-ports] but the commit message doesn't say why.

[easye]

The whitelisting of clang 9 was added in [6e8dcf5b19bd6a31a175096f9b4dfdcb63326930/macports-ports] but the commit message doesn't say why.

At the time, I was working with a single macOS host that had compilation times for clang on the order of days so iterating through what worked was rather painful. I believe clang 9 was the first compiler that I was able to build that worked, so rather than testing all the other possible compilers, I probably just whitelisted what worked.

[tomio-arisaka (Tomio Arisaka)]

See ​Xcode 11 tools can't build CCL