This structure will encapsulate the behaviors of usage requirements.
There are a number of them now and they all behave very similarly, so
try to reduce the code duplication as much as possible.
The `CXX_SCAN_FOR_MODULES` property may be used to control scanning for
targets and for source files rather than assuming "C++20 always needs to
be scanned".
a858466aac MSVC: Add test for debug information format
0e96a20478 MSVC: Add abstraction for debug information format
d4c8111da4 Clang/Windows: Clarify name of internal runtime library flags variables
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !7606
Replace our hard-coded default for `/Zi` with a first-class abstraction
to select the debug information format an enumeration of logical
names. We've long hesitated to do this because the idea of "debug
information format" touches on related concepts on several platforms.
Avoid that scope creep by simply defining an abstraction that applies
only when targeting the MSVC ABI on Windows.
Removing the old default flag requires a policy because existing
projects may rely on string processing to edit them and choose a
runtime library under the old behavior. Add policy CMP0141 to
provide compatibility.
Fixes: #10189
740bee97bd Xcode: Add settings to control a scheme's launch configuration
39456c70e1 Xcode: Add settings to control a scheme's GPU Validation values
4034272ed8 gitignore: Tell Git to ignore the .cache/ directory
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !7581
Extend the change from commit b764c7c273 (VS: Add property to turn off
Visual Studio compile batching, 2022-02-07, v3.24.0-rc1~710^2) by
adding a variable to initialize the property on every target.
Issue: #23179Fixes: #23639
07bc3b07ec gitlab-ci: test C++ modules using GCC
1b2270aa4e ci: add a Docker image to test out C++ modules with GCC
8c5a53096a Tests/RunCMake/CXXModules: add module-using examples
4151547e2f cmGlobalNinjaGenerator: use `cmModuleMapper` implementation
b43bdaff3c cmCxxModuleMapper: implement support for GCC's module map format
02d0f0e752 cmCxxModuleMapper: add source to handle module mapper contents
a046a45aad cmGlobalNinjaGenerator: add a TODO for header units
386465bf83 cmTarget: add support for C++ module fileset types
...
Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !7369
C++ modules have two variants which are of importance to CMake:
- `CXX_MODULES`: interface modules (those using `export module M;`,
`export module M:part;`, or `module M:internal_part;`)
- `CXX_MODULE_HEADER_UNITS`: importable header units
Creating C++ modules or partitions are *not* supported in any other
source listing. This is because the source files must be installed (so
their scope matters), but not part of usage requirements (what it means
for a module source to be injected into a consumer is not clear at this
moment). Due to the way `FILE_SET` works with scopes, they are a perfect
fit as long as `INTERFACE` is not allowed (which it is not).
Brad King