Re: buildbot test failures

[John W. Eaton]

On 04/12/2017 07:23 PM, Dmitri A. Sergatskov wrote:
> On Wed, Apr 12, 2017 at 9:34 AM, John W. Eaton <address@hidden
> <mailto:address@hidden>> wrote:
>
>
>         ​I guess I spoke too soon here. I still get the HDF5 fail if I
>         set the
>         flags
>         to "-O2 -flot=4".
>
>
>     Hmm, OK.I will add the configure flags in the buildbot config.
>
>
> ​Do you want keep "fat-lto-objects " for some reason? ​
> ​I also fond out that you do not need LDFLAG​, and io.tst would pass
> with -O1,
> but fail with -Os or -O2.
>
> So, from my point of view
>
>
>
> ../src/configure 'CFLAGS=-O2 -flto=4' 'CXXFLAGS=-O2 -flto=4' 'FFLAGS=-O2
> -flto=4
> ​'​
> ​'​
> NM=gcc-nm
> ​'​
> ​'​
> AR=gcc-ar
> ​'​
> ​'​
> RANLIB=gcc-ranlib
> ​'​

I had to look up what fat-lto-objects are.  I guess we don't need them 
for these builds since we know that the tools are present to support LTO.

If the test passes with one level of optimization but not another, are 
we doing something wrong or is this a compiler/linker bug?

jwe