configure seems to have detected ffsl() properly, but it looks like our
ffsl() redefinition gets enabled anyway, and conflicts with the
system-wide one.

Does it help if you comment out line #66 of include/private/misc.h ?
extern int ffsl(long) __hwloc_attribute_const;

Brice



Le 05/01/2017 13:52, Xavier LACOSTE a écrit :
>
> Hello Brice,
>
>  
>
> I attached the files.
>
>  
>
> I could build hwloc and link with it using the default (gcc) compiler.
>
> But If I use gcc to build the library I can link with gcc/icc/pgcc but
> not with cc from cray.
>
>  
>
> Thanks,
>
>  
>
> XL.
>
>  
>
>  
>
> *De :*Brice Goglin [mailto:brice.gog...@inria.fr]
> *Envoyé :* jeudi 5 janvier 2017 12:50
> *À :* Xavier LACOSTE
> *Cc :* Hardware locality user list
> *Objet :* Re: [hwloc-users] Building hwloc on Cray with
> /opt/cray/craype/2.5.4/bin/cc
>
>  
>
> Hello Xavier
> Can you send the /usr/include/string.h from that cray machine, your
> config.log and include/private/autogen/config.h from the hwloc build
> directory?
> Do you get the same error if building from the default compiler
> instead of /opt/cray/craype/2.5.4/bin/cc?
> thanks
> Brice
>
> Le 05/01/2017 12:31, Xavier LACOSTE a écrit :
>
>      
>
>     Hello,
>
>      
>
>     I’m trying to build hwloc on a cray machine with cray
>     compiler :/opt/cray/craype/2.5.4/bin/cc
>
>      
>
>     I get the following error :
>
>     $> CC=cc ./configure --prefix=$PWD-cc-install
>
>     $> make
>
>     Making all in src
>
>     make[1]: Entering directory `/home/j0306818/xavier/hwloc-1.11.5/src'
>
>       CC       bitmap.lo
>
>     CC-147 craycc: ERROR
>
>       Declaration is incompatible with "int ffsl(long)" (declared at
>     line 526 of
>
>               "/usr/include/string.h").
>
>      
>
>      
>
>     Total errors detected in bitmap.c: 1
>
>     make[1]: *** [bitmap.lo] Error 1
>
>     make[1]: Leaving directory `/home/j0306818/xavier/hwloc-1.11.5/src'
>
>     make: *** [all-recursive] Error 1
>
>      
>
>     Do you have any idea of what I am doing wrong ?
>
>     Is this a known issue ?
>
>      
>
>     Another secondary question :
>
>      
>
>     Hwloc builds correctly with gcc compiler but the CPUVendor field
>     is not available using this code :
>
>      
>
>     #include <hwloc.h>
>
>      
>
>     int main(int argc, char *argv[])
>
>     {
>
>       hwloc_topology_t topo;
>
>       hwloc_obj_t obj;
>
>       int err;
>
>       int i;
>
>       char obj_str[2048];
>
>       char attr_str[2048];
>
>      
>
>       /* initialize a topology context */
>
>       err = hwloc_topology_init(&topo);
>
>       assert(!err);
>
>      
>
>       /* insert optional topology configuration here */
>
>      
>
>       /* build the topology created and configured above */
>
>       err = hwloc_topology_load(topo);
>
>      
>
>       /* play with the topology here */
>
>       obj = hwloc_get_obj_by_type(topo, HWLOC_OBJ_PACKAGE, 0);
>
>       fprintf(stdout, "CPU_Vendor : %s \n",
>     hwloc_obj_get_info_by_name(obj,"CPUVendor"));
>
>       hwloc_obj_type_snprintf(obj_str, 2048, obj, 1);
>
>       hwloc_obj_attr_snprintf(attr_str,2048, obj, " | ", 1);
>
>       fprintf(stdout, "%s : %s\n", obj_str, attr_str);
>
>      
>
>       /* terminate this topology context */
>
>       hwloc_topology_destroy(topo);
>
>      
>
>       return 0;
>
>     }
>
>      
>
>     Am I using the correct code to retrieve the CPUVendor ? As far as
>     I see the topology is correctly detected anyway.
>
>      
>
>     Regards,
>
>      
>
>     XL.
>
>
>
>
>     _______________________________________________
>
>     hwloc-users mailing list
>
>     hwloc-users@lists.open-mpi.org <mailto:hwloc-users@lists.open-mpi.org>
>
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>
>  
>

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