Somehow I overlooked this class when adjusting everything else in c59ec874
et seq.
Update Python3Dependency so it has a _factory() method which returns a list
of constructors, depending on the method: kwarg, which integrates better
with the reporting in find_external_dependency()
This ensures the return of a PkgConfigDependency object, if the dependency
is found with pkgconfig, so we don't have to specifically implement
get_pkgconfig_variable() ourselves.
If successful, we should identify the method which was successful
If successful, we should report the version found (if known)
If failing, we should identify the methods we tried
Some dependency detectors which had no reporting now gain it
There's all kinds of complexities, inconsistencies and special cases hidden
in the existing behaviour, e.g.:
- boost reports modules requested, and BOOST_ROOT (if set)
- gtest/gmock report if they are a prebuilt library or header only
- mpi reports the language
- qt reports modules requested, and the config tool used or tried
- configtool reports the config tool used
- llvm reports if missing modules are optional (one per line)
We add some simple hooks to allow the dependency object to expose the
currently reported information into the consolidated reporting
Note that PkgConfigDependency() takes a silent: keyword which is used
internallly to suppress reporting. This behaviour isn't needed in
find_external_dependency().
Give ConfigToolDependency() a finish_init callback, so that tool-specific
initialization can be called from the constructor, rather than after
construction in the factory class.
v2:
finalize -> finish_init for clarity
find_external_dependency() now makes and iterates over a list of callables
which are constructors with bound arguments for the dependency objects we
are going to attempt to make, so we can consolidate reporting on these
attempts and handling failures in that function.
We now pass the current subproject to every FeatureNew and
FeatureDeprecated call. This requires a bunch of rework to:
1. Ensure that we have access to the subproject in the list of
arguments when used as a decorator (see _get_callee_args).
2. Pass the subproject to .use() when it's called manually.
3. We also can't do feature checks for new features in
meson_options.txt because that's parsed before we know the
meson_version from project()
D is not a 'c-like' language, but it can link to C libraries. The same
might be true of Rust in the future and Go when we add support for it.
This contains no functionality changes.
All dependencies were using find_library, has_header, get_define, etc on
self.compiler assuming that it's a compiler that outputs and consumes
C-like libraries. This is not true for D (and in the future, for Rust)
since although they can consume C libraries, they do not use the
C ecosystem.
For such purposes, we now have self.clib_compiler. Nothing uses
self.compiler anymore as a result, and it has been removed.
Since this is only consulted while constructing the Dependency object, it's
result doesn't depend on the instance (and it would make no sense if it did)
Jon Turney
Nirbheek Chauhan
Salamandar
David Seifert
Elliott Sales de Andrade
Aleksey Filippov
Benjamin Redelings
Jan Niklas Hasse