[mpich-discuss] Error "hydra requires VA_ARGS support", RHEL 5.10, icc

[Latham, Robert J.]

On Wed, 2014-02-26 at 19:36 +0000, Latham, Robert J. wrote:
> On Wed, 2014-02-26 at 17:47 +0000, Balaji, Pavan wrote:
> > Note for MPICH developers: It’ll be good to figure out what exactly changed between 3.0.4 and 3.1 that is causing this.  My understanding is that this check for warnings has been there in MPICH for a long time.
> 
> git-bisect is awesome for this sort of thing. 

Pavan! 

% git bisect start v3.1 v3.0.4
Bisecting: 467 revisions left to test after this (roughly 9 steps)
...
ccf7f70c3252d4e38933de00dd2f4bb49a389a61 is the first bad commit
commit ccf7f70c3252d4e38933de00dd2f4bb49a389a61
Author: Pavan Balaji <balaji at mcs.anl.gov>
Date:   Sat May 18 22:38:40 2013 -0500

    Warning squash for clang.

    For the VA_ARGS test, clang was accepting it in C89 mode, but
throwing
    warnings.  This causes configure to enable it, but the build to
throw
    many warnings.  This patch will disable VA_ARGS support unless the
    compiler can accept it without warnings.

    No reviewer.

:040000 040000 cb59b5abfef07e8076e405141f701798ecde55f9
5727410f767d93a42a31cd461c37750e588223e0 M        confdb
bisect run success