- cmake: drop `configure.os`.
This also includes OS version, but thus far it's not important enough
to include it.
- autotools: drop redundant, autotools-only `{target|host}.vendor`.
(it's part of the triplet in `{target|host}`.)
- swap order to `*.cpu` -> `*.os` to match triplet-order.
- cmake: drop redundant `target`.
It's manually filled and only in a (so far) few CI jobs. Let's revisit
when this becomes useful.
- move `buildinfo.txt` to build root.
- dist: add `buildinfo.txt` to `DISTCLEANFILES`.
- autotools: detect human readable compiler version.
- autotools: replace `XXYY` `compiler.version` with "X.Y"-style.
(also to match cmake.)
- autotools: use distinct `compiler_id` for Apple clang: `APPLECLANG`.
To match cmake and also because the the "X.Y"-style version number
is the Apple version, while `XXYY` was a value roughly translated to
mainline llvm/clang version.
- show buildinfo at the end of the configure stage, when run in CI, or
when `CURL_BUILDINFO` or `CURL_CI` env is set.
Follow-up to 1fdea16846#14802
Assisted-by: Dan Fandrich
Ref: https://github.com/curl/curl/pull/14802#issuecomment-2334942991Closes#14822
50e2cb5894