Replace our hard-coded default for `/RTC1` with a first-class
abstraction to select runtime checks from an enumeration of logical
names. Add a `MSVC_RUNTIME_CHECKS` target property and corresponding
`CMAKE_MSVC_RUNTIME_CHECKS` variable.
Removing the old default flag requires a policy because existing
projects may rely on string processing to edit them and choose
runtime checks under the old behavior. Add policy CMP0184 to
provide compatibility.
Fixes: #26614
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
When profiling Qt builds on macos, about 2.2% of a `cmake` invocation
was spent reading from `/dev/urandom`. Use a (thread)local rng to
mitigate this cost, particularly in `cmGeneratedFileStreamBase::Open`.
98cc86e265 try_compile(): Include languages with _ or - when passing linker vars
Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !9361
This indicates to MSBuild which configurations are considered debug
configurations. This is useful for reference both by humans and tools.
Issue: #25327
a820877d03 errors: avoid constructing a stream before getting the last error
5cf7018af6 cmFileCopier: remember error statuses and get their strings
0639a32d3a cmFileTimes: return status codes from APIs
Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !9023
Add a `CMAKE_Swift_COMPILATION_MODE` variable and corresponding
`Swift_COMPILATION_MODE` target property to control the compilation
mode. Select among `wholemodule`, `singlefile`, and `incremental`.
Add policy CMP0157 to remove the default `-wmo` flags in favor of the
abstract setting.
Issue: #25366
8f9f371668 try_compile: Add support for using ALIAS targets
9f8aa94192 Add missing `OUTPUT` in ExportImport test
Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !8877
Offer the capability, through variable `CMAKE_LINKER_TYPE`, as well as
the target property `LINKER_TYPE` to specify which linker must be used.
The implementation of this capability is specified by variables specific
to the language and linker type: `CMAKE_<LANG>_USING_LINKER_<TYPE>`.
Some definitions are provided as part of `CMake`.
For example, to select the `LLVM` linker rather than the standard one,
the type `LLD` should be specified through the variable `CMAKE_LINKER_TYPE`.
And, on `Apple`, `Linux` and some environments on `Windows`, the variable
`CMAKE_<LANG>_USING_LINKER_LLD` has value `-fuse-ld=lld`. And for `Windows`
environments based on `MSVC`, where the linker is used directly, the tool
`lld-link.exe` will be used rather than `link.exe`.
Fixes: #19174, #24254, #24990
Under CMP0155's NEW behavior, projects that explicitly enable C++20
support with `set(CMAKE_CXX_STANDARD 20)` may also explicitly
disable scanning with `set(CMAKE_CXX_SCAN_FOR_MODULES OFF)`.
We already propagate `CMAKE_CXX_STANDARD` into `try_compile` test
projects, so propagate `CMAKE_CXX_SCAN_FOR_MODULES` too.
Fixes: #25313
Following commit 6377a43814 (CUDA: Support response files with nvcc,
2022-06-01, v3.25.0-rc1~636^2), while determining the compiler ABI, do
not use response files, so that we can extract implicit link flags.
Fixes: #25272
`include-what-you-use` diagnostics, in practice, are specific to
the environment's compiler and standard library. Update includes
to satisfy IWYU for our CI job under Debian 12.
Some newer compilers warn in situations where the returned local
variable could be movable, but a C++11 defect meant older compilers
may still return a copy when a type conversion is involved. Adding
the suggested std::move prevents that warning on that compiler, but
creates a new warning on others. Constructing the actual return type
explicitly with the suggested std::move on the constructor argument
keeps both sets of compilers happy.
Update the `TryCompileCode` signature to allow callers to distinguish
between administrative failures and a compilation failure. Return
results in a structure to which more information can be added later.
Since commit 0c141b0393 (try_compile: Record output location instead of
reverse computing it, 2022-08-31, v3.25.0-rc1~154^2) we always look for
the "Debug" configuration's output binary from the test project.
Restore looking for the `CMAKE_TRY_COMPILE_CONFIGURATION`.
Fixes: #24180
