2c71d051fa Makefiles Generators: use compiler for dependencies generation
afd0f6785d Refactoring: Abstract Makefile line continuation format
b6068ce407 Refactoring: enhance include file filtering
3401403f69 Refactoring: Introduce place-holder for dependency target.
a97c41bf8b Refactoring: Makefiles Generators: Add support for various depends scanners
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Brad King <brad.king@kitware.com>
Merge-request: !5528
573d51201a GENERATED prop: Set CMP0118 to NEW for some (unrelated) tests
6624b65b3f GENERATED prop: Add implementation for policy CMP0118 being set to NEW
b14fe704f8 GENERATED prop: Simplify determining the language of a source file
ca4ce458a3 GENERATED prop: Check CMP0118 policy and warn in certain situations
0eb30f175e GENERATED prop: Introducing policy CMP0118 and its documentation
78c8d95605 GENERATED prop: Add some tests before introducing changes with CMP0118
e01527619f Simplify code by calling a function directly instead of duplicating it
75cb8615e9 Fix typo in function name
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !5308
In 5651901c54 (Xcode: add support for embedding frameworks, 2020-10-24)
we neglected to add a release note for the new target properties
that were added.
Each source compilation generates a dependencies file. These dependencies
files are consolidated in one file per target. This consolidation is done
as part of command 'cmake -E cmake_depends` launched before evaluation of
makefile dependency graph.
The consolidation uses the same approach as `CMake` dependencies management.
Fixes: #21321
These changes are in preparation of compiler generated dependencies support
for Makefiles generators
* compiler output and dependency target can be different for Makefiles generators
* resolve inconsistency naming for dependency file place-holder
This commit also prepares for embedding things other than
frameworks. In the future, we may want to embed resources and
other types supported by Xcode, so the target properties have
been documented in a way that clearly signals the future intent.
Rename the `CheckPIESupported` helper functions so that they
don't clobber other internal functions. Also rename them to
document they can't be unified with `CheckCompilerFlag`.
Fixes: #21497
The `set(CMAKE_CXX_EXTENSIONS FALSE)` option has the effect of passing
compile option `-std=c++NN` instead of `-std=gnu++NN`. On some
platforms, the latter form (or the secondary effects that it has, such
as setting _XOPEN_SOURCE) is required. This typically affects platforms
such as mingw, cygwin and QNX. The GNU-like compiers default to
`-std=gnu++NN`, which means that users can typically build source code
on those platforms by default.
While the `set(CMAKE_CXX_EXTENSIONS FALSE)` option was set here in
commit f034b0f6 (CMake compilation: do not use compiler extensions,
2020-03-14), the other changes in that commit added `#defines` which
become required in the absense of use of `-std=gnu++NN`. However, only
platforms regularly tested in the cmake dashboard were ported, as is
reasonable. That made CMake fail to compile on QNX and perhaps other
platforms which for which no one is submitting regular testing to the
cmake dashboard.
Make the `set(CMAKE_CXX_EXTENSIONS FALSE)` option conditional on non-QNX
to restore the QNX build.
Issue: #21503
Fix the language checks added by commit 90dead024c (CheckCompilerFlag:
unified way to check compiler flags per language, 2020-09-25,
v3.19.0-rc1~88^2), commit 10ae907de0 (CheckSoureCompiles: Add a unified
way to check if a source compiles, 2020-09-14, v3.19.0-rc1~118^2~1), and
commit 357e2ef429 (CheckSoureRuns: Add a unified way to check if a
source runs, 2020-09-14, v3.19.0-rc1~118^2) to work when variables of
the language names are set.
Fixes: #21500
