[mpich-discuss] why does a non-standard GCC in PATH break my all-Intel MPICH config?

[Jeff Hammond]

Not attached are two config.log files.  They were too big.  They are
instead in my Dropbox Public folder:

https://dl.dropboxusercontent.com/u/58983082/mpich-intel-badgcc-config.log
https://dl.dropboxusercontent.com/u/58983082/mpich-intel-okgcc-config.log

One corresponds to an MPICH configure with my default environment and
the other with a vanilla environment not including my GCC 4.8.1
install.  When the environment knows about GCC 4.8.1, configure tests
related to C++ fail.

How does MPICH sniff out this non-standard GCC install when I'm using
Intel and how do I fix it?  Or is the Intel compiler doing this on its
own and there's nothing MPICH can do about it?  If the latter, does
anyone know how to force the Intel compiler to ignore my non-standard
GCC install?

Thanks,

Jeff

-- 
Jeff Hammond
jeff.science at gmail.com