Yes - this is a link time option - and somehow your build of mpich is using at compile/preprocess time.
You can try rebuilding this mpich - or use --download-mpich with petsc configure Satish On Wed, 4 Dec 2019, Alexander Lindsay wrote: > Is this regarded as failing just because of the unused option warning? The > `mpicxx` wrapper specifies `-Wl,-flat_namespace` which is indeed going to > be unused during preprocessing... > > On Wed, Dec 4, 2019 at 11:40 AM Alexander Lindsay <[email protected]> > wrote: > > > I'm currently unable to build superlu_dist during configuration because of > > "Could not find a CXX preprocessor". From configure.log it looks like CXXPP > > is getting deleted after errors executing `mpicxx -E` and then `mpicxx > > --use cpp32`. Attached is configure.log. > > >
