Add +llvm60 to cctools and ld64

[gaming-hacker (G Alexander)]

hello,

i always use the latest clang compiler and switched to clang-6.0 so i need to rebuilt a lot of ports because i don't keep old compilers around. many ports do not handle new compilers, here is an example, there are other ports like this.

port: ld64-latest

...

set all_llvm_variants {llvm39 llvm40 llvm50 llvmdev}

array set llvm_variant_version {llvm33 3.3 llvm34 3.4 llvm37 3.7 llvm39 3.9 llvm40 4.0 llvm50 5.0 llvmdev devel}

...

so i manually updated these to

set all_llvm_variants {llvm39 llvm40 llvm50 llvm60 llvmdev}

array set llvm_variant_version {llvm33 3.3 llvm34 3.4 llvm37 3.7 llvm39 3.9 llvm40 4.0 llvm50 5.0 llvm60 6.0 llvmdev devel}

Are ports better ways to 'fix' these ports without having to manually update them?

Thanks

[ryandesign (Ryan Carsten Schmidt)]

What compilers base uses for ports by default is completely separate from what compilers individual ports such as ld64 might have variants for. Both need to be updated separately.

Base uses compilers as specified in browser:macports-base/src/port1.0/portconfigure.tcl​. Looks like it hasn't been updated to include clang-6.0 yet. And neither, as you've noticed, has ld64. I guess that's because clang-6.0's existence is very recent, having just been created twelve days ago.

Neither of these are particularly painful to update, someone just has to do it.

[jeremyhu (Jeremy Huddleston Sequoia)]

Right, and I haven't had time to qualify either to my satisfaction yet. I consider it fairly obvious that "devel" isn't qualified, but I consider adding 6.0 a stamp that 6.0 (while itself still it beta) is ready for prime time.

I'm not saying it isn't ready. I'm just saying that I have not had the time to do an install with it as the default compiler in order to vet it. I'll probably do that some time after the next update to it.

[gaming-hacker (G Alexander)]

ok, thanks can you close the ticket?

[jeremyhu (Jeremy Huddleston Sequoia)]

No, I'm leaving this open unil I finish qualifying.

[ryandesign (Ryan Carsten Schmidt)]

It it time now? The llvm-6.0 port is updated to the 6.0.0 stable version.

[jeremyhu (Jeremy Huddleston Sequoia)]

Yep.

[vit9696]

With all the effort needed to continuously update cctools dependencies, may it be reasonable to provide an option to use Xcode cctools, just like it was done for ld64? I do not think there is a particular need in custom cctools on recent versions of macOS, and such a way would ease upgrading the custom clang compiler infrastructure with macports. @jeremyhu, what's your opinion?

[vit9696]

This remains unfixed as of ​https://github.com/macports/macports-ports/blob/master/devel/cctools/Portfile.

[mf2k (Frank Schima)]

Indeed and also it is not fixed in the ld64 ports.

[kencu (Ken)]

llvm-6.0 has been in use for some time now; llvm 7, 8, and 9 are also active.