The "cpp-httplib_" prefix of build options is now dropped, as Meson
build options are already namespaced for each project. The old names
remain as deprecated aliases for the new ones.
This new option automatically enables the new non-blocking name
resolution when the appropriate libraries are found, automatically
adding them to the list of required dependencies. It will gracefully
fall back to the old behaviour when no library is found.
This complements commit ea850cbfa7.
Thanks to abf3a67dd0 the use of python3
isn't required anymore to configure the build, so I moved the
find_program('python3') inside the "if compile" block.
This makes it possible to configure cpp-httplib on systems where python
isn't available with tools like muon: https://sr.ht/~lattis/muon/
A pkg-config file was previously installed only if cpp-httplib was being
built as a compiled library.
Since architecture-independent .pc files
can exist in /usr/share/pkgconfig, it can be useful to install one even
when installing the header-only version (for example, it could be used
by third party projects to easily find out if cpp-httplib is installed
and its version, using something like Meson's `dependency()` or CMake's
`pkg_check_modules()`).
The change makes the Meson build behave a bit more like the CMake one,
as it also always installs a CMake Config file, but here the pkg-config
file gets installed to the correct architecture-independent directory
(`datadir` represents /usr/share on Linux and simiar systems).
Lastly, I made some minor cleanups.
This integrates the "main" test suite (test/test.cc) in Meson.
This allows to run the tests in the CI with the Meson-built version of
the library to ensure that nothing breaks unexpectedly.
It also simplifies life of downstream packagers, that do not have to
write a custom build script to split the library and run tests but can
instead just let Meson do that for them.
* Full Meson support
cpp-httplib can be now built with Meson even in compiled library mode.
The library is built with LTO, supports OpenSSL, zlib and Brotli,
and the build system also generates a pkg-config file when needed.
Compared to the CMake file this one is quite small (more than five times
smaller!), and maintaining it won't be an issue :)
* meson: automatic versioning
