When using libpkg, the output filename is determined by libpkg
itself, based on information in the manifest: package name and
version, basically. This doesn't necessarily match the name that
CMake has determined via CPACK_TEMPORARY_PACKAGE_FILE_NAME or
CPACK_PACKAGE_FILE_NAME. So reset the CMake-determined list
to match what libpkg will do.
At CPack running time the `CMAKE_PROJECT_HOMEPAGE_URL` variable
is not set.
Internal CPack modules (e.g. CPackDEB, CPackRPM, CPackFreeBSD)
should use `CPACK_PACKAGE_HOMEPAGE_URL` instead, which is available
after inclusion of `CPack.cmake` into `CMakeLists.txt`.
Closes: #19607
These modules are not meant to be included by user code, they are
only an internal implementation detail for CPack. Having them live
in the main Modules directory with documentation was misleading, so
they have been moved into Modules/Internal/CPack, and their
documentation has been stripped following its move into the new
"CPack Generators" section. No-op modules which contained only
documentation have been removed entirely.
The only module that hasn't been moved is CPackIFW, because it
contains user-facing macros which would be lost if it were moved.
So, the CPackIFW module has been updated with a note explaining what
needs to (eventually) happen.
Adriaan de Groot