[mpich-discuss] mpif77 -f77=gfortran

[Kenneth Raffenetti]

That's a fair point about the manpage. We probably want to suppress the 
mpif77 manpage and instead redirect to mpifort for installations like 
this. I'll make a ticket to track the issue.

Thanks,
Ken

On 02/17/2016 02:43 AM, Andreas Gocht wrote:
> Hi Ken
>
> thanks for the explanation. I just wondered as according to the man page
> the -f77 is valid. Yet I didn't recognize that there is just a link in
> my case to mpifort. Is it probably an Idea to mention this behavior in
> the man page?
>
> Best Andreas
>
> Am 16.02.2016 um 22:38 schrieb Kenneth Raffenetti:
>> Hi Andreas,
>>
>> In MPICH 3.2, if configure detects your F77 and FC compilers are the
>> same, a single mpifort compiler wrapper is built. Symlinks for mpif77
>> and mpif90 are maintained, but in your case are not fully backwards
>> compatible. The newer mpifort does not recognize -f77. It should
>> recognize -fc, however.
>>
>> Ken
>>
>> On 02/16/2016 06:17 AM, Andreas Gocht wrote:
>>> Hey there
>>>
>>> I tired to compile a program using autotools. I realized that during the
>>> configure autotools is trying to compile "mpif77 -f77=gfortran -c -g
>>> conftest.f". The compilation fails with:
>>>
>>> configure:18975: mpif77 -f77=gfortran -c -g conftest.f >&5
>>> gfortran: error: unrecognized command line option '-f77=gfortran'
>>> configure:18975: $? = 1
>>> configure: failed program was:
>>> |       program main
>>> |
>>> |       end
>>> configure:18983: result: no
>>>
>>> witch leads the whole configure to fail.
>>>
>>> I tried to compile the sample program on the command line unsing "mpif77
>>> -f77=gfortran test.f" and I got the same result (test.f containing just
>>> "program main \n \n end").
>>> According to the man page of MPICH v3.2 "-f77" should choose the used
>>> Fortran compiler? It looks like the option is passed to fortran itself?
>>> I tried it with MPICH v3.2 as well as with the latest version form the
>>> git. MPICH 3.1 is working fine.
>>> Has there something changed between MPICH 3.1 and 3.2?
>>>
>>> Best Andreas
>>>
>>>
>>>
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