The search logic for the IAR linker, librarian and related tools is
moved from `Modules/Compiler/IAR-FindBinUtils.cmake` to
`Modules/CMakeFindBinUtils.cmake` by introducing an new elseif block
for the IAR toolchain.
The search logic was refactored to omit repeating itself.
Fixes: #22425
IAR is available for both Linux and Windows OSes. Moreover,
binaries `*.exe` could be called from a Linux box, or vice versa.
See also commit 01a4eec446 (IAR: Changes required for Linux,
2019-04-25, v3.15.0-rc1~185^2).
Fixes: #22312
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).
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
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
In commit a90d2a9eed (IntelLLVM: Add support for Intel LLVM-based
compilers, 2020-11-02, v3.20.0-rc1~89^2~20) we accidentally left out
activation of the C/C++ standard level selection logic when IntelLLVM is
targeting the MSVC ABI.
Fixes: #22388
Microsoft intends to ship the final C++20 flag in VS 16.11 albeit with a few
parts missing due planned ABI breaking changes.
The current 16.11 Preview 1 toolchain version is 19.29.30129.3, so let's
restrict based on that.
The commit 98fea8205e (Compiler/TI: Avoid response file usage for
linker, 2020-07-11, v3.19.0-rc1~495^2) disabled linker file usage by
default. The previous settings were working, even if not for all cases.
Restore them and add an explanation in a comment.
Issue: #22233
Tell the Fortran compiler to write preprocessor output directly to a
file, as we do for the GNU compiler. The previous "redirect stdout"
approach could break checks using flags that add information to stdout
when called with `-###`.
Fixes: #22156
9c479c7c40 IntelLLVM: Add special case for ifx 2021.1 version extraction
b7193ab18f Intel: Update Classic compiler version detection for 2021
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !6052
c4941b7e66 ARMClang: Do not automatically add cpu/arch compile or link options
0078db3888 ARMClang: Separate cpu/arch flags from preceding flags
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Jaeden Amero <kitware@patater.com>
Merge-request: !6035
The compile options `--march=<arch>` and `--mcpu=<cpu>` and the
link option `--cpu=<cpu>` are automatically added by CMake based
on `CMAKE_SYSTEM_PROCESSOR` or `CMAKE_SYSTEM_ARCH`. But this is not
sufficient, because armclang also supports enabling or disabling
features using `+<feature>`:
-mcpu=<name>[+[no]<feature>+...]
For example:
-mcpu=cortex-a57+nocrypto+nofp+nosimd+crc
(Reference: https://developer.arm.com/documentation/dui0774/k/Compiler-Command-line-Options/-mcpu?lang=en)
The problem is, even if a project adds a flag with features it needs,
CMake still adds flags, resulting in code that is compiled with wrong
CPU features and unable to run.
Add policy `CMP0123` to not automatically add compile or link options,
and let projects set them instead.
Co-Author: Brad King <brad.king@kitware.com>
Fixes: #21173
