Example - /bmake/linux/packages
# ----------------------------------------------------------------------------------------
# Locations of OPTIONAL packages. Comment out those
# ----------------------------------------------------------------------------------------
# Location of X-windows software
X11_LIB = -L/usr/X11R6/lib -lX11
PETSC_HAVE_X11 = -DPETSC_HAVE_X11
# If using MPICH version 1.1.2 or higher use the flag
#DPETSC_HAVE_MPE_INITIALIZED_LOGGING
#MPE_INCLUDE = -I/home/petsc/mpich-1.1.1/mpe
#MPE_LIB = -L/home/petsc/mpich-1.1.1/lib/LINUX/ch_p4
#MPE_LIB = -L${MPI_HOME}/lib -lmpe
#PETSC_HAVE_MPE = -DPETSC_HAVE_MPE