I'm not sure if this is the appropriate list for slepc bugs. If not, please fwd this message to the appropriate list. I tried to compile slepc-dev (Rev 2895) with both petsc-3.3-p1 and petsc-dev but I always get this compilation error: [ 0%] Building CXX object CMakeFiles/slepc.dir/src/ps/psghiep.c.o /home/thomas/local/src/slepc-dev/src/ps/psghiep.c: In function ‘PetscErrorCode PSEigenVectorsPseudoOrthog(PS, PSMatType, PetscScalar*, PetscScalar*, PetscBool)’: /home/thomas/local/src/slepc-dev/src/ps/psghiep.c:780:40: error: cannot convert ‘PetscScalar {aka std::complex<double>}’ to ‘PetscReal {aka double}’ in assignment Note that I compiled PETSc with complex scalars. Reverting the last commit fixes the compilation error. Regards Thomas