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From: Bert Wesarg (wesarg_at_[hidden])
Date: 2007-05-13 08:23:34


Hello,

Rob wrote:
> livelfs wrote:
>>
>> your 1.2.1 build error seems to be the one I bumped into.
>> Try to avoid to give an absolute path to CC macro when you run configure
>> (check the archives)
>
> Hmmm, to get a decent fortran compiler for my AlphaServers, I have to
> compile my own GCC compiler set (the default with CentOS is not good
> enough). Hence, I have gcc/g++/gfortran both in /opt/gcc/bin and /usr/bin.
>
> I'd like to set CC=/opt/gcc/bin/gcc, FC=/opt/gcc/bin/gfortran etc. However,
> instead I must do CC=gcc, FC=gfortran and manually let the path point
> to /opt/gcc/bin such that it first searches in /opt/gcc/bin.
>
> However, by default /opt/gcc/bin is not in my PATH, because in general
> I'd like to use the original GCC compiler set that comes with the OS.
> Then, what happens when I compile my MPI code "mpif90 mycode.f90"?
> Does OpenMPI remember to use the compilers in /opt/gcc/bin, or will
> it then erroneously use the ones in /usr/bin ?
>
> Even better: is there a patch available to fix this in the 1.2.1
> tarball, so that
> I can set the full path again with CC?
The patch is quite trivial, but requires a rebuild of the build system
(autoheader, autoconf, automake,...)

see here:
https://svn.open-mpi.org/trac/ompi/changeset/14610

but you can try to hack the current configure script, just by search for
the affected line

> (is it only the CC macro, or also F77, F90, CXX, CPP and CXXCPP?)
it affects only CC.

Bert
>
> Thanks,
> Rob.
>
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