[libc-commits] [libc] [libc][cmake] Do not overwrite SKIP_FLAG_EXPANSION_*. (PR #125762)

[Nick Desaulniers via libc-commits]

https://github.com/nickdesaulniers approved this pull request.

I thought that's what `FORCE` did for `set` statements?

https://cmake.org/cmake/help/latest/command/set.html#set-cache-entry

i.e., if `FORCE` wasn't set, `set` would not re-set a value when it was specified by a user?

I don't care much either way, but perhaps I misremember what `FORCE` does.  Because we don't use `FORCE` for these set statements, I would have thought we already do not overwrite these.

perhaps @petrhosek can clarify before you land this?

https://github.com/llvm/llvm-project/pull/125762