[PATCH] D89013: [libcxx] Support per-target __config in per-target runtime build

phosek added a comment. This is the per-target `__config` (or more preferable `__config_site`) support I mentioned in D88843 . Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D89013/new/

[PATCH] D89013: [libcxx] Support per-target __config in per-target runtime build

phosek created this revision. phosek added a reviewer: ldionne. Herald added subscribers: libcxx-commits, cfe-commits, s.egerton, dexonsmith, simoncook, mgorny. Herald added projects: clang, libc++. Herald added a reviewer: libc++. phosek requested review of this revision. When using the