Since commit 4ca0526f8a (cmake: Pass -S and -B into PreLoad.cmake and -C
scripts, 2019-08-20, v3.16.0-rc1~195^2) the value of `CMAKE_SOURCE_DIR`
is the source directory rather than the current working directory.
This was correct on its own, but the place storing that value is also
used as the base for relative paths specified on the command line.
The latter should of course be relative to the current working
directory.
The fix is to switch to use a full path internally, unless a full path
is already specified. Add tests for the behaviour of `-C` under these
four circumstances:
{with -S, without -S} x {full path, relative path}
Fixes: #19827
Other multi-word command line options use hyphens to separate
the words, so the --loglevel option introduced in CMake 3.15 was
inconsistent in this regard. Rename it to --log-level but still support
the original --loglevel name to preserve backward compatibility.
The same is done for the C and CXX language. This initializes
compiler flags like the sysroot path or deployment target.
Closes: #19794
Suggested-by: Kyle Fleming
Extend the fix from commit 0578239d3a (VS: Tell VS 16.4 not to verify
SYMBOLIC custom command outputs, 2019-09-23, v3.15.4~2^2) to apply to
outputs in CMake-provided targets like `install`. Simply mark these
outputs as `SYMBOLIC` too since they are not actually generated.
Fixes: #19737
Since commit b80557c7bd (file(GENERATE): Evaluate early to allow
generating source files, 2014-11-04, v3.2.0-rc1~398^2) we create the
`cmSourceFile` instances marked with a `GENERATED` source file property
before tracing source dependencies. Move it to even earlier so that
steps in `cmGlobalGenerator::AddAutomaticSources` can operate on all
sources. This also avoids the accidental `O(n^2)` calls for `n` local
generators that we had previously.
This is also needed since commit 83c1657ff7 (Unity build: Generate
sources during Compute step, 2019-10-03) to support `file(GENERATE)`
outputs as sources in a target with `UNITY_BUILD` enabled.
Add notes for the changes from commit 33c7ea513d (CPackDeb: Use
`CPACK_PACKAGE_DESCRIPTION_FILE`, 2019-07-11).
Suggested-by: Alex Turbov <i.zaufi@gmail.com>
Add section headers similar to the 3.15 release notes and move each
individual bullet into an appropriate section. Revise a few bullets.
Drop bullets covering internal interfaces.
The relative path check added by commit 5838aba1aa (Export: Report error
on relative include with genex., 2013-11-26, v3.0.0-rc1~285^2) was added
one condition too early. If the value starts in `${_IMPORT_PREFIX}`
(which comes from `$<INSTALL_PREFIX>`) then it is an absolute path.
Fixes: #19791
If the target has C files, it will get a C PCH file.
The same for C++ files. The linker language is no
longer used to determine which language to use for
PCH.
Fixes: #19790
The unity build sources need to be added for all generators. Create
them during `cmGlobalGenerator::Compute` to avoid duplicating the calls
in every generator. We already handle Qt autogen there too.
Issue: #19789
Peter Waller