@fclc Keen to hear if you manage!

@boegel so far already pivoted to OpenCL (PETSC does have configure flags for SYCL, but as of now is marked as unsupported. Also Intels MPI seem to target iFort and ICC, not the newer IFX/ICX compilers)

@fclc @boegel if memory serves, it's "mpiifort -fc=" or mpiifort + env variables.
I looked into it when I wanted to check if EasyBuild was going to have a bug when enabling ifx for MPI codes (all was fine, since it was already setting the appropriate env variable).
My makefile, on the other hand, needed patching for a multi-word $FC when using the first approach listed above.

@hattom @boegel Yeah, also hit that roadblock and unfortunately the typical work around of passing the MPI compiler followed by the LLVM compiler as a CC argument didn't work out.
specifically
--with-cc=mpiicc --with-cxx=mpiicpc --with-fc=mpiifort --with-debugging=0 COPTFLAGS='-cc=icc' CXXOPTFLAGS='-O3 -march=sapphirerapids -mno-amx-tile -mno-amx-int8 -mno-amx-bf16 -cxx=icpx' FOPTFLAGS='-O3 -march=sapphirerapids -mno-amx-tile -mno-amx-int8 -mno-amx-bf16 -fc=ifx ' --with-blaslapack-dir=$MKLROOT

@boegel @hattom I’ll try after foam builds (already 30 minutes into compiling) but I wonder if passing —with-cc=“mpiicc -cc=‘icx’” (and relevant cpp and fort) would do the trick