The skip-checking is now in the functions for adding plugins and
subdirectories, so that third-party building should get it
as well, for free. Since AddModuleSubdirectory and AddPlugin
use the newly split-out module, handling SKIP_MODULES and USE_*
consistently across module repositories is now easier.
While here, make accumulating-the-skipped-modules explicit.
- point to main Calamares site in the 'part of' headers instead
of to github (this is the "this file is part of Calamares"
opening line for most files).
- remove boilerplate from all source files, CMake modules and completions,
this is the 3-paragraph summary of the GPL-3.0-or-later, which has
a meaning entirely covered by the SPDX tag.
The build instructions are not that interesting, it's a toss-up
between CC0 and BSD-2, but because other CMake bits are BSD-2-Clause,
apply that to more CMakeLists. The copyright date isn't all that
accurate, but these are just inconsequential files.
While here, tidy up and get rid of some useless intermediates.
- Remove (heavy-handed) top-level include_directories, in favor
of more focused ones; this helps to make sure that the dependencies
ordering is correct.
If USE_<foo> is given a value that doesn't match **anything**,
then bail out. Since USE_* is an explicit distro choice for a
specific implementation, it's an error if that implementation
is not there.
When there are multiple modules doing a thing and it really only
makes sense to have one of them in a given Calamares compilation,
the USE_<foo> variables allow you to select one, while ignoring
all the other implementations. If USE_<foo> is not set, all
implementations are included (as usual).
- Add -v (verbose) and -b (load via bytearray)
- Verbose prints the keys read from the file,
- Bytes reads via an indirection through QByteArray, like Settings does
Make a function out of explaining-skipped-modules, and call it
not only after collecting all the modules, but also after
the feature summary, so that it's quite clear which modules
are skipped.
Modules may be skipped for different reasons: SKIP_MODULES
is the traditional approach to suppress some, but other modules
may have unmet build requirements (e.g. Plasma Look-and-Feel,
or the Partitioning module) and should be able to opt-out
of being built. For all those skipped, log it explicitly after
all the modules have been examined.
Only CMake-based (e.g. C++) modules support opting-out in this way.
