clang-10: @10.0.1_4: no binaries for macOS 10.9 and 10.10, due to configure failures on builders

[mascguy (Christopher Nielsen)]

You folks are probably already aware, but figured we should create a tracking ticket anyway.

In short, there are fatal errors during configure, on the 10.9 and 10.10 builders. I only discovered this after trying to update ports on my 10.10 VM, which resulted in an attempted source build of clang-10.

10.9 build: ​https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/136262/steps/install-port/logs/stdio

10.10 build: ​https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/132461/steps/install-port/logs/stdio

[kencu (Ken)]

mmm. Looks like the new changes I pushed from clang-11 into clang-10 have caused some troubles back in some of the midrange systems. Thanks

Probably will just force the archs again there I guess.

[mascguy (Christopher Nielsen)]

Ken, any progress on this? Normally I wouldn't bug you, but could really use a binary for macOS 10.9 and 10.10 VMs...

[kencu (Ken)]

In fef917bdb74ea355b636b5df1ad3e111f2963434/macports-ports (master):

clang-10: backport SDK search override

we have backported a bit of the cmake from clang-11
for arm64 support for llvm/clang-10, so now we also
need to backport the SDK search override from clang-11

closes: #62083