[libc-commits] [libc] [libcxx] [llvm] [libcxx][libc] Hand in Hand PoC with from_chars (PR #91651)

[Joseph Huber via libc-commits]

jhuber6 wrote:

> The dependency on code in`src` was an error, and was fixed in #133999. The dependency on code in `hdr` is fine, those are for determining if we're using the LLVM-libc type definitions or the type definitions from the system's libc. They were added after I designed that part, so they're not represented on the chart.

I believe the issue is a partial git checkout which doesn't track `libc`, so those headers don't exist. We could have a compile definition in the `find_libc_common.cmake` or w/e it's called that indicates if it were successful or not if we wanted to maintain compatibility for stuff like that. Though, it's probably less than ideal to segment libraries like this, people might be confused why they suddenly don't have `from_chars` on someone's install.

https://github.com/llvm/llvm-project/pull/91651