[petsc-dev] Fwd: PETSc coding tips

[Jed Brown]

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

>   So, why don't we have a "developers" mode that forces C89 only that
>   we use by default?  This is needed by new PETSc developers who have
>   C99 burnt into their brains.

It's CFLAGS=-std=c89, but that turns off lots of library features that
are not in the base standard (unless we define _GNU_SOURCE, for
example).  It's not clear to me whether we need to continue supporting
C89 or if we can start using a few C99 features.

https://msdn.microsoft.com/en-us/library/hh409293.aspx
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