CMake compiler IDs of the compilers in ATFL

[zaikunzhang]

I am not sure whether I should ask here.

What are the CMake compiler IDs of the compilers in ATFL? In the following, I only find ARMClang. Is it for all the Arm compilers?

https://cmake.org/cmake/help/latest/variable/CMAKE_LANG_COMPILER_ID.html

This list is probably not maintained by ARM, but someone has to contact those who are responsible, if a compiler needs to be added.

Thanks.

[pawosm-arm]

ATfL is closer to the mainline LLVM than ACfL, so please try using Clang for clang and LLVMFlang for flang.

[zaikunzhang]

please try using Clang for clang and LLVMFlang for flang.

If I am using flang from ATfL, do you mean that (CMAKE_Fortran_COMPILER_ID MATCHES "LLVMFlang") will turn out true? Thanks.

[pawosm-arm]

If I am using flang from ATfL, do you mean that (CMAKE_Fortran_COMPILER_ID MATCHES "LLVMFlang") will turn out true? Thanks.

AFAIK it is project specific. For example, the Fortran code I'm building now, do not set this variable at all, and the cmake command has generated the CMakeCache.txt file with this in it:

$ cat CMakeCache.txt |grep CMAKE_Fortran
CMAKE_Fortran_COMPILER:FILEPATH=armflang
CMAKE_Fortran_FLAGS:STRING=-O3 -mcpu=native -ffp-contract=fast -ffree-form
CMAKE_Fortran_FLAGS_DEBUG:STRING=-O0 -g
CMAKE_Fortran_FLAGS_MINSIZEREL:STRING=
CMAKE_Fortran_FLAGS_RELEASE:STRING=-O3
CMAKE_Fortran_FLAGS_RELWITHDEBINFO:STRING=-O2 -g
//ADVANCED property for variable: CMAKE_Fortran_COMPILER
CMAKE_Fortran_COMPILER-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_Fortran_FLAGS
CMAKE_Fortran_FLAGS-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_Fortran_FLAGS_DEBUG
CMAKE_Fortran_FLAGS_DEBUG-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_Fortran_FLAGS_MINSIZEREL
CMAKE_Fortran_FLAGS_MINSIZEREL-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_Fortran_FLAGS_RELEASE
CMAKE_Fortran_FLAGS_RELEASE-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_Fortran_FLAGS_RELWITHDEBINFO
CMAKE_Fortran_FLAGS_RELWITHDEBINFO-ADVANCED:INTERNAL=1
$

[kiranchandramohan]

You can look at this PR for finding how Cmake detects flang.
https://gitlab.kitware.com/cmake/cmake/-/merge_requests/7246