[petsc-dev] Always compiling and installing Ctetgen even without updates

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:
>   Yes, but if petscconf.h is identical a super smart dependency checker would see it was unchanged.  Worth doing? Probably not.

Checksum the existing petscconf.h and the provisional petscconf.h.  If
they match, return without modifying the file.  If not, overwrite it
(what we do now).  Then standard make dependencies will work.
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