[MacPorts] #65570: mpich-default fails at build on Big Sur

[MacPorts]

#65570: mpich-default fails at build on Big Sur
----------------------+---------------------------
 Reporter:  mbrethen  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.7.2
 Keywords:            |       Port:  mpich-default
----------------------+---------------------------
 {{{
 --->  Configuring mpich-default
 Warning: Configuration logfiles contain indications of -Wimplicit-
 function-declaration; check that features were not accidentally disabled:
   VALGRIND_DESTROY_MEMPOOL: found in mpich-4.0.2/src/mpl/config.log
   VALGRIND_MEMPOOL_FREE: found in mpich-4.0.2/src/mpl/config.log
   VALGRIND_PRINTF_BACKTRACE: found in mpich-4.0.2/src/mpl/config.log
   VALGRIND_CREATE_BLOCK: found in mpich-4.0.2/src/mpl/config.log
   VALGRIND_MEMPOOL_ALLOC: found in mpich-4.0.2/src/mpl/config.log
   __atomic_load_8: found in mpich-4.0.2/modules/libfabric/config.log
   VALGRIND_CREATE_MEMPOOL: found in mpich-4.0.2/src/mpl/config.log
   exit: found in mpich-4.0.2/modules/json-c/config.log
 --->  Building mpich-default
 Error: Failed to build mpich-default: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_mpich
 /mpich-default/main.log for details.
 Error: Follow https://guide.macports.org/#project.tickets if you believe
 there is a bug.
 Error: Processing of port mpich-default failed
 }}}

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Ticket URL: <https://trac.macports.org/ticket/65570>
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