Seeting up CMake with oneAPI23+MVS2022 to switch between classic and LLVM compilers (Fortran/C++)

hkvzjal — Wed, 07 Aug 2024 11:53:04 GMT

Hi,

I'm trying to upgrade my build system to enable building MVS2022 projects in which I can switch between classic and LLVM compilers but I am hitting an issue with CMake

dev stack version:

oneAPI2023 + MVS2022 + CMake 3.30.2

(I'm working with oneAPI23 because it is the last to offer both version for the C++ compilers which I need to validate before moving to LLVM)

I have a python script that enables me to setup the whole building process (large project) where, to change between classic C++ and LLVM I would setup something like:

```python

if cpp_compiler_param == "icl23" and build_environment == "vs2022":
args_cmake_call.append("-DCMAKE_GENERATOR_TOOLSET=Intel C++ Compiler 19.2")

if cpp_compiler_param == "icx23" and build_environment == "vs2022":
args_cmake_call.append("-DCMAKE_GENERATOR_TOOLSET=Intel C++ Compiler 2023")

```

For Fortran I had no need to do anything before since there was just one compiler. Now, since CMake 3.29 there is the `-T fortran=<compiler>` option to choose between ifort and ifx.

How can I simultaneously setup the generator toolset for C++ and Fortran to create different combinations? I haven't found a way to pass multiple fields to CMAKE_GENERATOR_TOOLSET in order to achive that. And if I try to append `-T fortran=<compiler>` after having setup the toolset for C++ CMake crashes saying there is a conflict.

Any hints? Thank you

Re: Seeting up CMake with oneAPI23+MVS2022 to switch between classic and LLVM compilers (Fortran/C++

hkvzjal — Wed, 07 Aug 2024 12:10:05 GMT

Found the solution by trial and error ... using the "," to set the Fortran compiler was enough

"-DCMAKE_GENERATOR_TOOLSET=Intel C++ Compiler 2023,fortran=ifx"

Sorry and thanks,

It might be useful for other users

topic Seeting up CMake with oneAPI23+MVS2022 to switch between classic and LLVM compilers (Fortran/C++) in Intel® Fortran Compiler

Seeting up CMake with oneAPI23+MVS2022 to switch between classic and LLVM compilers (Fortran/C++)

Re: Seeting up CMake with oneAPI23+MVS2022 to switch between classic and LLVM compilers (Fortran/C++