Hei, I'm currently trying to install PETSc on a server (Ubuntu 22.04) with Intel MPI and Intel OneAPI. To combine both, I have to use f. ex. "mpiicc -cc=icx" as C-compiler, as described by https://stackoverflow.com/a/76362396. Therefore, I adapted the configure-line as follow: ./configure --prefix=/media/storage/local_opt/petsc --with-scalar-type=complex --with-cc="mpiicc -cc=icx" --with-cxx="mpiicpc -cxx=icpx" --CPPFLAGS="-fPIC -march=native -mavx2" --CXXFLAGS="-fPIC -march=native -mavx2" --with-fc="mpiifort -fc=ifx" --with-pic=true --with-mpi=true --with-blaslapack-dir=/opt/intel/oneapi/mkl/latest/lib/intel64/ --with-openmp=true --download-hdf5=yes --download-netcdf=yes --download-chaco=no --download-metis=yes --download-slepc=yes --download-suitesparse=yes --download-eigen=yes --download-parmetis=yes --download-ptscotch=yes --download-mumps=yes --download-scalapack=yes --download-superlu=yes --download-superlu_dist=yes --with-mkl_pardiso=1 --with-boost=1 --with-boost-dir=/media/storage/local_opt/boost --download-opencascade=yes --with-fftw=1 --with-fftw-dir=/media/storage/local_opt/fftw3 --download-kokkos=yes --with-mkl_sparse=1 --with-mkl_cpardiso=1 --with-mkl_sparse_optimize=1 --download-muparser=no --download-p4est=yes --download-sowing=yes --download-viennalcl=yes --with-zlib --force=1 --with-clean=1 --with-cuda=1 The configuration, however, fails with The CMAKE_C_COMPILER: mpiicc -cc=icx is not a full path and was not found in the PATH for all additional modules which use a cmake-based configuration approach (such as OPENCASCADE). How could I solve that problem? Thank you! Regards, Roland Richter