I have no idea how fast Cray acts in such a case. -erik
On Thu, Jan 17, 2013 at 2:05 PM, Brice Goglin <brice.gog...@inria.fr> wrote: > Does Cray fix such bugs quickly usually? If so, no need to change hwloc. > If not, I'll need somebody to test the change on other cray platforms and > compiler versions. > Brice > > > > Jeff Hammond <jhamm...@alcf.anl.gov> a écrit : >> >> This is a bug in the Cray compiler. They cannot and should not set >> the __GNUC__ flag unless they are fully compatible with GCC. There >> are many ways to define "fully compatible" but at a minimum, code that >> compiles with GCC needs to compile with any compiler that elects to >> define __GNUC__. It is prudent to impose a higher standard in some >> cases but that's not pertinent to this discussion. >> >> Lots of vendor compilers pretend to be __GNUC__ for any number of >> reasons. I believe that they are all wrong for doing it. >> >> Regarding this specific issue, there is nothing wrong with hwloc and I >> don't know why anyone should bother trying to fix Cray's problem, but >> I suspect that pragmatism will prevail, as it appears to have in the >> case of Boost >> (http://www.boost.org/doc/libs/1_52_0/boost/config/select_platform_config.hpp). >> >> I'll reproduce this locally and contact Cray directly about fixing >> this on their end. >> >> Best, >> >> Jeff >> >> On Thu, Jan 17, 2013 at 12:19 PM, Erik Schnetter <schnet...@gmail.com> wrote: >> >>> hwloc-1.6.1rc2 fails to build with the Cray compiler >>> >>> Cray C : Version 8.1.2 Thu Jan 17, 2013 12:18:54 >>> >>> The error message is >>> >>> CC bitmap.lo >>> CC-147 craycc: ERROR >>> Declaration is incompatible with "int ffsl(long)" (declared at line 526 of >>> "/opt/cray/xe-sysroot/4.1.20/usr/include/string.h"). >>> >>> (Yes, there is no line number with the error message.) >>> >>> This seems to be caused by the fact that the Cray c! >>> ompiler >>> sets __GNUC__, >>> >>> but is not quite compatible. A work-around is to change line 56 of >>> include/private/misc.h from >>> >>> #elif defined(__GNUC__) >>> >>> to >>> >>> #elif defined(__GNUC__) && !defined(_CRAYC) >>> >>> -erik >>> >>> -- >>> Erik Schnetter <schnet...@gmail.com> >>> http://www.perimeterinstitute.ca/personal/eschnetter/ >>> >>> ------------------------------ >>> >>> hwloc-users mailing list >>> hwloc-us...@open-mpi.org >>> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users >>> >> >> >> > _______________________________________________ > hwloc-users mailing list > hwloc-us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users > -- Erik Schnetter <schnet...@cct.lsu.edu> http://www.perimeterinstitute.ca/personal/eschnetter/
