With this change File objects created with the builtin files() function
can be used with the fs submodule like normal strings.
All methods that seem reasonable support FileOrSting arguments.
For example fs.exists() still only takes str arguments because meson
already ensures that File objects do exist when creating them with files().
Each user facing function of the fs module has an additional FeatureNew
check when used with File objects.
The test cases for fs are extended appropriately with tests for File objects.
This is just forcing the usage of -include as c_args, even though this
particular case can happen easily when this is provided via a dependency
cflags.
We also ensure that both the headers are included by using locale
definitions.
We need to konw on rconfigure which options have already bee set not
just for the super project, but also for the subproject. However, using
first_invocation is not sufficient, as a reconfigure could add a new
subpproject that wasn't present before, and we need to initialize that
project's builtins.
Some variables are reserved because meson set them automatically. But we
are not setting them for dataonly pc files, so there is no reason to
reserve them.
Fixes: #8583.
Currently the Qt Dependencies still use the old "combined" method for
dependencies with multiple ways to be found. This is problematic as it
means that `get_variable()` and friends don't work, as the dependency
can't implement any of those methods. The correct solution is to make
use of multiple Dependency instances, and a factory to tie them
together. This does that.
To handle QMake, I've leveraged the existing config-tool mechanism,
which allows us to save a good deal of code, and use well tested code
instead of rolling more of our own code.
The one thing this doesn't do, but we probably should, is expose the
macOS ExtraFrameworks directly, instead of forcing them to be found
through QMake. That is a problem for another series, and someone who
cares more about macOS than I do.