`AddRequiredTargetC(xx)` feature didn't take the default compiler
standard into account, which possibly resulted in the use of an older
standard when some features requested it.
Fixes: #18686
The OLD behaviors of all policies are deprecated, but only by
documentation. Add an explicit deprecation diagnostic for policies
introduced in CMake 3.7 and below to encourage projects to port away
from setting policies to OLD.
They are unused, but if someone used them they would lead to
problems since they would copy the internal raw pointers
and the destructor would cause double delete
Since commit dc6888573d (Pass EXCLUDE_FROM_ALL from directory to
targets, 2019-01-15, v3.14.0-rc1~83^2) we automatically forward the
`EXCLUDE_FROM_ALL` to targets as they are created. This regressed
support for interface libraries on which the property is not allowed.
Skip forwarding the `EXCLUDE_FROM_ALL` property for interface libraries.
It is not needed on them because they do not participate in the
generated build system anyway.
Fixes: #18896
Suppress some cases in `Source/cmGeneratorExpressionNode.cxx` and
`Source/cmUVHandlePtr.h` where a few older compilers require a
user-defined default constructor (with `{}`).
In order to keep infinitely-recursive scripts from causing a stack
overflow in the CMake executable, CMake now imposes a maximum
recursion limit before issuing an error message. The limit can be
adjusted at runtime with CMAKE_MAXIMUM_RECURSION_DEPTH.
Fixes: #18694
When a target is created it now inherits the EXCLUDE_FROM_ALL property
from its directory. This change makes it possible to include a target
in "all", even if its directory has been marked as EXCLUDE_FROM_ALL.
The OLD behaviors of all policies are deprecated, but only by
documentation. Add an explicit deprecation diagnostic for some policies
to encourage projects to port away from setting policies to OLD.
Removing FindQt.cmake gives Qt upstream a path forward to export its
own QtConfig.cmake files which can be found by find_package()
without having to explicitly specify CONFIG. Projects that still
want to use Qt3/4 can call find_package(Qt[34]), include(FindQt),
or add FindQt.cmake to their CMAKE_MODULE_PATH.
When `CMP0053` is not set to OLD or NEW then we compute both variants
in case we need to warn about a behavior change. Do not allow both
code paths to produce an uninitialized variable warning.
Fixes: #18552
Before this change, install rules created by add_subdirectory()
would be executed after all of the top-level install rules, even
if they were declared before the top-level rules. This change
adds a new policy, CMP0082, which interleaves the add_subdirectory()
install rules with the other install rules so they are run in the
correct order.
These new capabilities enable to manage link directories
Two new properties:
* target properties: LINK_DIRECTORIES and INTERFACE_LINK_DIRECTORIES
One new command
* target_link_directories(): to populate target properties
Fixes: #17215
