Introduce the function cmReadGccDepfile that parses a GCC-style depfile
and returns its content. The implementation uses a lexer that is
modeled after the re2c implementation in Ninja.
The sample files of the autotest have been created with gcc 8.3.0.
This depfile reader is to be used by the Autogen facility to make use
of the depfiles that are generated by Qt's meta object compiler.
Previously the command did not allow naming targets on the LHS that
were not created in the calling directory. Lift this restriction to
enable more flexible use by projects.
Fixes: #17943
Find GLVND components if available. Add `GLX` and `EGL` options for
COMPONENTS that allow requesting these libraries explicitly. Introduce
new import targets for these windowing-system-specific libraries.
On a GLVND system, populate the legacy `OPENGL_LIBRARIES` variable and
the `OpenGL::GL` target using the `OpenGL` and `GLX` components. On
non-GLVND systems, continue to use the legacy `GL` library and simply do
not provide the GLVND components. Application code can choose to adapt
based on the availability of GLVND components as imported targets.
Adds an option CPACK_ENABLE_FREEBSD_PKG to allow CPack to look
for FreeBSD's libpkg / pkg(8). If this is set and the libpkg
headers and library are found (which they will be, by default,
on any FreeBSD system), then add a FreeBSD pkg(8) generator.
The FreeBSD package tool pkg(8) uses tar.xz files (.txz) with two
metadata files embedded (+MANIFEST and +COMPACT_MANIFEST).
This introduces a bunch of FreeBSD-specific CPACK_FREEBSD_PACKAGE_*
variables for filling in the metadata; the Debian generator does
something similar. Documentation for the CPack CMake-script is styled
after the Debian generator.
Implementation notes:
- Checks for libpkg -- the underlying implementation for pkg(8) --
and includes FreeBSD package-generation if building CMake on
a UNIX host. Since libpkg can be used on BSDs, Linux and OSX,
this potentially adds one more packaging format. In practice,
this will only happen on FreeBSD and DragonflyBSD.
- Copy-paste from cmCPackArchiveGenerator to special-case
the metadata generation and to run around the internal
archive generation: use libpkg instead.
- Generating the metadata files is a little contrived.
- Most of the validation logic for package settings is in
CPackFreeBSD.cmake, as well as the code that tries to re-use
packaging settings that may already be set up for Debian.
- libpkg has its own notion of output filename, so we have
another contrived bit of code that munges the output file
list so that CPack can find the output.
- Stick with C++98.
We do not require copyright assignment for contributions to CMake.
Update the top-level notice to mention "Contributors" explicitly.
Add a list of the Contributors whose names already appear in
source-level copyright notices. Find the list with the command:
$ git grep -h 'Copyright[^.]' -- *.* \
Auxiliary Modules Packaging Source Templates Tests \
| grep -v Kitware | sed 's/^#\? *//' | sort | uniq
Manually refine the list to de-duplicate entries and filter out
notices from third-party code.
This converts the CMake license to a pure 3-clause OSI-approved BSD
License. We drop the previous license clause requiring modified
versions to be plainly marked. We also update the CMake copyright to
cover the full development time range.
