Since commit 03c6ebf2b5 (Modules:Check,GenerateExportHeader: include
only what's needed, 2023-03-09, v3.27.0-rc1~327^2) some existing
projects broke because they were accidentally relying on indirect
inclusion of some check modules. For now, restore the unnecessary
includes for compatibility. They can be removed with a policy later.
Fixes: #24991
Issue: #24994
9e1b30121f Help:toolchain: refer to CheckSourceCompiles
cf48022dc5 Help:Check*: include CMAKE_REQUIRED_* vars to dedupe
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !8300
CMAKE_REQUIRED_FLAGS now notes that space-delimited string, not
;-list is required, which could be surprising compared to similar
options that do use ;-list
GenerateExportHeader had a hidden state requirement that other
modules were included first. Considering include_guard, Modules
should include all they actually use.
The conversion of Check<Lang>CompilerFlag, SourceCompiles, and
SourceRuns over to the new functions has the possibility of breaking
projects that had functions with those existing names.
To reduce the possibility of collisions we now have all the
legacy code call functions that start with `cmake_`, and users
will need to explicitly include the new modules to get the
non-prefixed versions
Fixes: #21359
Add entries in Modules and Modules/Platform to support
Objective-C compiler determination and identification.
Add Modules to check Objective-C compiler flags, source
compilations, program checks, etc...
Use OBJC as the designator of the language, eg:
project(foo OBJC)
Add various tests for Objective-C language features. Add
tests to preserve C++ handling of .m and .mm files when
OBJC is not a configured language.
Co-Authored-By: Cristian Adam <cristian.adam@gmail.com>
