Hello, Helmut Grohne, le mar. 10 juin 2025 07:17:33 +0200, a ecrit: > The CMake code strongly prefers using the compiler wrappers mpicc and > others.
Yes, since that's the way everybody compiles MPI code. > So at present, we're in a situation where CMake + MPI + C++ + cross > compilation does not work in any way. It works if you don't cross build > (via mpicxx) or if you don't use C++ (via mpi-c.pc). I don't think anybody really uses mpi-c.pc :) Normally one uses mpicc. > What is the proper way to discover MPI support for C++? The usual way is calling mpicxx Some programs would provide a --with-mpicxx= configure option to specify another one to use, but there is no real standard. Samuel
