[petsc-dev] Configure problem on Titan

[Barry Smith]

> On Mar 11, 2015, at 10:55 PM, Jed Brown <jed at jedbrown.org> wrote:
> 
> Barry Smith <bsmith at mcs.anl.gov> writes:
>>  If one fails then configure moves on an tries with the other. Is
>>  this a problem? We do it all over the place on configure.
> 
> The problem is that both may "work" (link without errors), but exhibit
> subtle errors at run-time due to ABI mismatch.

Anything is possible, if one based ./configure on "what could go wrong with it" then ./configure couldn't really do anything.

  Barry