For Find modules where `<Modulename>` is not fully uppercase.
`<Modulename>` is case-exact name used in the Find modules filename:
`CMake/Find<Moduleame>.cmake`.
`find_package_handle_standard_args()` sets both `<MODULENAME>_FOUND` and
`<Modulename>_FOUND` when detecting the dependency. Some CMake code
relies on this and 3rd-party code may rely on it too. Make sure to set
the latter variant when detecting the dependency via `pkg-config`, where
we don't call `find_package_handle_standard_args()`.
CMake sets these variable to `TRUE` (not `ON` or `1`). Replicate this
for compatibility.
Closes#16153
- add `iphlpapi` library for c-ares.
Ref: 082d98ba6b
- fix to not add system libs if the dependency was not found.
librtmp, Rustls, wolfSSL
Follow-up to 421e592db2#15832
Follow-up to 7bab201abe#15193Closes#16089
The new detection method also allows to enable librtmp without using
OpenSSL as a curl TLS backend at the same time.
Also:
- implement manual version detection for librtmp.
Version info is in hex. With CMake 3.13 and newer, extract it as a hex
number. With earlier CMake version, just strip the leading zeroes.
Doing more here seems overkill because librtmp has been standing
at 2.3/2.4 for a decade now. Bumping into hex digits seems unlikely
before deprecating CMake 3.13 support.
librtmp advertises v2.4 via its `pkg-config` module, and v2.3 via
its public header. The latter shows up in `curl -V` and either can
be shown at configure-time depending on detection method.
This isn't a curl bug.
- GHA/macos: enable rtmp in a job.
- apply the "half-detection" fix to the Find module.
`librtmp` is also affected (in CI too), because it depends on libssl and
libcrypto.
Closes#15832
