In commit 46371132b3 (FindCUDA: CUDA_LIBRARIES doesn't contain raw
`-pthread`, 2019-11-11, v3.17.0-rc1~455^2) we introduced use of the
`Threads::Threads` target, but we do not `find_package(Threads)` on all
platforms. Use the target only if it exists.
Since commit d91b5a72cd (Ninja: Add support for CUDA nvcc response
files, 2019-05-30, v3.15.0-rc1~8^2) we use NVCC's `--options-file`
option to avoid long link command lines via a response file. However,
for non-device linking the host tools are used and the option does not
make sense. Update the logic to use `--options-file` only for device
linking. Linking with the host tools already has its own logic for
response files.
Fixes: #19954
Add an additional include flag to PCH usage command line to fix programs
that rely on `compile_commands.json` file. Pass it to the preprocessor
directly to avoid compiler driver to change it to '-include-pch'.
When preprocessor is requested to preprocess a file, it tries to get
the original filename from '.pch' and uses that file for preprocessing.
CMake generates a '.pch' file from the '.hxx' file by passing an empty
'.cxx' source file to the compiler as a compilation unit and the header
file with the '-include' flag. After that, compiler puts compilation
unit filename in the '.pch' as the original filename.
However, CMake build system uses empty file as the source file and
passes the header file using '-include-pch' flag. As a result, Clang
uses the wrong file for preprocessing and produces the corrupted
preprocessed file.
Fixes: #20355
Signed-off-by: Sergey Larin <cerg2010cerg2010@mail.ru>
One may encounter warnings if FindPkgConfig is used in any project, even
indirectly, that has set any of these policies to old explicitely or requires
an older version.
e240371ab1 Help: CPackIFWGenerator: explain relation to CPackIWF
78779c6111 Help: Show external link only once per page; explain abbreviation QtIFW.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4348
ceb5ee4a7b FindOpenMP: Add support for Clang on Windows
2dbff623f9 FindOpenMP: Save flags/libs in cache entries each time they are detected
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4327
b4d5ea8233 FindMPI: Preserve order of include directories on re-runs of CMake
8261ee3a9c FindMPI: Restore re-construction of include directories
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4341
In commit 5bc6230741 (ExternalProject: Option to turn off recursive
update of git submodules, 2019-10-16) we implemented the feature in the
clone script written by `_ep_write_gitclone_script` but not in the
update script written by `_ep_write_gitupdate_script`. Implement the
latter by factoring out a common helper to use in both places.
Fixes: #20335
The fix in commit 5861c6d450 (FindMPI: Preserve include order when
extracting component directories, 2019-12-19) only works on the first
run of CMake in which we find MPI. Extend the fix to save the compiler
wrapper's entire include path in our cache without splitting anything
out. That way we can preserve the order when CMake re-runs.
Fixes: #20338
The fix in commit 5861c6d450 (FindMPI: Preserve include order when
extracting component directories, 2019-12-19) only works on the first
run of CMake in which we find MPI. It preserves the include directories
on the first run but still splits them up and saves the pieces in the
cache. On future runs the pieces are not re-assembled, and we do not
know the order anyway.
Restore the re-assembly step so that at least all the include dirs are
available. Leave preservation of the original order to later work.
Issue: #20338
Populate `CMAKE_Swift_IMPLICIT_INCLUDE_DIRECTORIES` with the macOS SDK's
include directory so that we filter such implicit directories out of
Swift targets.
Fixes: #19845
llvm-rc requires preprocessed rc files. The CMake command line tool
cmake_llvm_rc enables channing the preprocessor call and the resource
compiler and make this appear as single compilation step.
When llvm-rc is detected as resource compiler, the RC compilation step
is set to use this command.
Brad King