The OLD behavior only removes a non-cache variable of the same
name in specific circumstances. The previous wording implied
that it would always occur.
Also add a note about the behavior compared to the analogous
CMP0077 policy, which affects the option() command in a similar
but subtly different way.
Given the compiler to use, `CMakeFindBinUtils.cmake` automatically
determines a number of tools including linker (CMAKE_LINKER) and archiver
(CMAKE_AR) and stores them in a generated file `CMakeCCompiler.cmake` as
non-CACHE entries. The compiler-specific ARMClang.cmake then tries to
override CMAKE_LINKER and CMAKE_AR as CACHE entries.
Following the introduction of CMP0126, which is set to NEW in the test
for a working compiler, setting a CACHE entry does not replace a normal
entry of the same name anymore, resulting in a failed test due to wrong
linker and archiver.
To fix this, set CMAKE_LINKER and CMAKE_AR for ARMClang directly in
`CMakeFindBinUtils.cmake` as is done for other compilers. Check
for them in `ARMClang.cmake` to safeguard cases when a project explicitly
includes `ARMClang.cmake` prior to compiler determination (which some
projects do to work around other problems in older CMake versions).
Documentation added by
* commit 4f4f2028b8 (Help: Add documentation for buildPresets and
testPresets, 2021-01-13, v3.20.0-rc1~51^2~7)
* commit 676ecf0d37 (cmake-presets: Add build and test presets,
2020-12-14, v3.20.0-rc1~51^2~6)
used square brackets in the `cmake --build` signature to indicate
non-optional alternatives, which is not a typical convention.
A common convention is to use parentheses instead, but in this
case it is probably clearer to list the two signatures separately.
Fixes: #22413
31ac4b9165 ci: Verify that Intel MKL is found when it is the only BLAS/LAPACK
57dcde19da Find{BLAS,LAPACK}: Avoid clobbering results when no vendor is requested
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !6336
When a user provides `CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA` or
`CPACK_DEBIAN_<comp>_PACKAGE_CONTROL_EXTRA` variables in
`CMakeLists.txt` and the package contains dynamic libraries, the
`CPackDeb.cmake` sets `CPACK_ADD_LDCONFIG_CALL` to `1`. Later it
analyzes if defaulted `postinst`/`postrm` should be generated trying to
check if the user provides any in `CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA`
variable. However, the `foreach` loop uses the invalid variable
`PACKAGE_CONTROL_EXTRA` instead, so these files gonna be overridden.
Fix the variable name.
Fixes: #22410
Logic added by commit 4c74c86f40 (FindBLAS/LAPACK: Add support for the
Fujitsu SSL2 library, 2021-01-27, v3.21.0-rc1~402^2~1) accidentally
expressed a boolean condition without proper grouping. The pattern was
then copied by commit 2c9e623e31 (Find{BLAS,LAPACK}: Add support for the
NVHPC LAPACK library, 2021-05-05, v3.21.0-rc1~192^2). The resulting
logic incorrectly tries Fujitsu and NVHPC vendors even after results are
found from another vendor, and then erases those. Fix the grouping.
Fixes: #22403
Since commit 8bc5c8961e (CMakePresets.json: Add the ability to
conditionally disable presets, 2021-03-10, v3.21.0-rc1~464^2)
the example requires presets version 3 support, which is not
available until CMake 3.21. CMake 3.20.0 can't open v3 presets.
Make cmakeMinimumRequired compatible with the example's version.
Since commit 5115dd1e2c (IntelLLVM: Fix C/C++ standard level flags on
Windows, 2021-07-07, v3.21.0-rc3~7^2^2) we activate C/C++ standard level
logic for IntelLLVM when targeting the MSVC ABI. Update the
`RunCMake.try_compile` test to be aware of this even when CMake is
itself configured by an older CMake that does not know this.
Clang does not define `__STDC__` if in MSVC compatibility mode, but does
define `__STDC_VERSION__`. Avoid the fallback for this combination.
This backports commit 7596d8b951 (CMakeCCompilerId: Fix C standard
detection in Clang MSVC mode, 2021-02-07, v3.21.0-rc1~587^2~14) to the
3.20 release series. This is needed since commit 5115dd1e2c (IntelLLVM:
Fix C/C++ standard level flags on Windows, 2021-07-07, v3.21.0-rc3~7^2^2)
now that we activate C/C++ standard level logic for IntelLLVM when
targeting the MSVC ABI.
Since commit 84036d30d4 (IntelLLVM: Fix C/C++ standard level flags on
Windows, 2021-07-07, v3.21.0-rc3~8^2~1) we activate C/C++ standard level
logic for IntelLLVM when targeting the MSVC ABI. Update the
`RunCMake.try_compile` test to be aware of this even when CMake is
itself configured by an older CMake that does not know this.
Revert commit 74cc2e3326 (FindJPEG: Search for 'turbojpeg' and
'turbojpeg-static' too, 2021-01-09, v3.20.0-rc1~176^2) pending further
investigation. The "turbo" variants are not drop-in replacements on all
platforms.
Fixes: #22333
Extend the documentation added by commit 96a7040107 (project: Define
variables indicating whether project is top level, 2021-03-24,
v3.21.0-rc1~443^2) to give some examples of how the variables are set in
each context.
d69b46bf01 Help: Document when CUDA_STANDARD values were added
bdb59839b9 Help: Document when OBJCXX_STANDARD values were added
627aca946b Help: Document when OBJC_STANDARD values as definition list
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !6321
Note that some CUDA C++ language standard levels were added before any
compilers actually supported them. In such cases, the value of
`CUDA_STANDARD` gracefully degrades to the highest supported by the
compiler (unless `CUDA_STANDARD_REQUIRED` is enabled). Therefore we can
document support for each value based on when CMake learned of it.
Update the IAR linker and archiver rules to use the `<CMAKE_LINKER>`
and `<CMAKE_AR>` placeholders instead of hard-coding the tool names.
Fixes: #22395
This was previously fixed by commit d46590910c (Check*CompilerFlag: Do
not set result as a normal variable too, 2020-09-21, v3.18.3~1^2^2), but
was regressed by refactoring in commit 90dead024c (CheckCompilerFlag:
unified way to check compiler flags per language, 2020-09-25,
v3.19.0-rc1~88^2) due to the changes being developed concurrently.
Fix it again, and add a test case.
Fixes: #21207
13961f3b43 Merge branch 'backport-3.20-intel-oneapi-std-windows'
5115dd1e2c IntelLLVM: Fix C/C++ standard level flags on Windows
84036d30d4 IntelLLVM: Fix C/C++ standard level flags on Windows
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !6319
Craig Scott