Re: hwloc update with so-bump and mpich rebuild

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On Thu, Aug 29, 2019 at 2:05 PM Philip Kovacs via devel
<devel@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
> Is there something odd going on with arch aarch64 -- openmpi builds are failing on that arch.

There sure is.  I had the same thing happen with a qd build.  Look for
this in your build log:

checking for g++ option to produce PIC... -fPIC -DPIC
checking if g++ PIC flag -fPIC -DPIC works... no

and then configure decides not to add -fPIC to the compiler flags, and
the library fails to build due to invalid relocations for a shared
object.  It only happens with g++, not gcc, and it only happens in
Rawhide.  I messed around with the qd build for awhile, and
accidentally found that adding -mabi=lp64 to CXXFLAGS makes that
configure test pass.  That shouldn't be necessary, as -mabi=lp64 is
already the default.  So, yes, something strange is going on with
aarch64 in Rawhide.
-- 
Jerry James
http://www.jamezone.org/
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