On Sat, 16 May 2009, Tahar Amari wrote: > It seems the line > > include ${PETSC_DIR}/conf/base > > is not taken into account the make command > on my Mac OS. > Is it ony a gnu make directive please ? It should work with all makes. And you have gnumake on the Mac. Did you say PETSc examples worked fine with the example makefile? What errors do you get now? Satish