Add the ability to generate CPS package information when install(EXPORT)
is used. This relies on additional information to be passed to CMake,
and is intended as a way of getting CPS out of existing projects without
needing to make changes to the projects' CMakeLists.txt. (Particularly,
this feature is intended for package distributors, not project authors.)
Run the `clang-format.bash` script to update all our C and C++ code to a
new style defined by `.clang-format`, now with "east const" enforcement.
Use `clang-format` version 18.
* If you reached this commit for a line in `git blame`, re-run the blame
operation starting at the parent of this commit to see older history
for the content.
* See the parent commit for instructions to rebase a change across this
style transition commit.
Issue: #26123
Add initial support for exporting (install only, for now) Common Package
Specification (https://cps-org.github.io/cps/) format package
descriptions. This has some limitations, such as not supporting
generator expressions (as these cannot be portably exported), and only
partially supporting transitive dependencies, but should be usable for
at least some simple cases. (Actually, $<LINK_ONLY> is theoretically
supportable, but is not yet implemented.)
This still needs tests; these will be added in the next commit. Other
potential improvements include support for language-specific compile
definitions and inferring some package properties from project
properties. Additionally, there is no module support yet; this is partly
pending on having a tool agnostic format for providing the necessary
information.
