[mpich-discuss] Build failed with Undefined symbols

[Tony Curtis]

> On Jul 19, 2021, at 3:59 PM, Junchao Zhang via discuss <discuss at mpich.org> wrote:
> 
> Hello,
> 
> I configured mpich/main (or 4.0a2) with 
>    ./configure  CC=gcc CXX=g++ --enable-fortran=no
> on Mac with Apple clang version 12.0.5 (clang-1205.0.22.11). The build failed with
> 
>   ...
>   CCLD     hydra_pmi_proxy
> Undefined symbols for architecture x86_64:
>   "_hwloc_topology_set_io_types_filter", referenced from:
>       _HYDT_topo_hwloc_init in libhydra.a(topo_hwloc.o)
> 

Do you have hwloc installed (e.g. via brew)?  Or if so, is it new enough?

Tony