[petsc-dev] CFLAGS and COPTFLAGS

[Jed Brown]

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

>    If mpicc is providing a -On flag and the PETSc ./configure user
>    provides a -Om flag should we generate a very useful error message
>    telling them of the conflict?

It is an MPI bug if the wrapper-provided flag stomps on the user flag.
(Such a bug appeared a few years ago, but was fixed then.)
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