[petsc-dev] CFLAGS and COPTFLAGS

Jed Brown jed at jedbrown.org
Sun Jan 19 21:22:31 CST 2014


Barry Smith <bsmith at mcs.anl.gov> writes:
>    Yes.* 

That leads to sprawling threads like this one.

http://www.open-mpi.org/community/lists/users/2008/10/6891.php

Being stupid might not decrease the incidence of weird behavior, but the
fewer "smart" components in the chain, the easier it is to debug.

>     And BTW, you do know my opinion of compiler wrappers! 

I have the same opinion.

>    Barry
>
>   * But note that we have not yet discussed the case where PETSc
>   compilers the MPI implementation and what optimization flags we pass
>   down there.

MPICHLIB_CFLAGS when building MPICH.  IMO, wrappers should never include
optimization flags.
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