fails to build with recent OpenMPI versions

[lnussbaum]

Hi,

HPCC fails to build with recent OpenMPI versions, due to the use of functions that were removed in recent versions of the MPI standard.

> mpicc -o ../../../src/comm/HPL_copyL.o -c ../../../src/comm/HPL_copyL.c  -DHPL_CALL_CBLAS -I../../../include -I../../../include/Debian   -fomit-frame-pointer -O3 -funroll-loops -W -Wall -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>/hpl/lib/arch/build=. -fstack-protector-strong -Wformat -Werror=format-security
> In file included from ../../../include/hpl_pmisc.h:54,
>                  from ../../../include/hpl.h:80,
>                  from ../../../src/comm/HPL_packL.c:50:
> ../../../src/comm/HPL_packL.c: In function ‘HPL_packL’:
> /usr/lib/x86_64-linux-gnu/openmpi/include/mpi.h:322:57: error: expected expression before ‘_Static_assert’
>   322 | #define THIS_SYMBOL_WAS_REMOVED_IN_MPI30(func, newfunc) _Static_assert(0, #func " was removed in MPI-3.0.  Use " #newfunc " instead.")
>       |                                                         ^~~~~~~~~~~~~~
> /usr/lib/x86_64-linux-gnu/openmpi/include/mpi.h:2842:27: note: in expansion of macro ‘THIS_SYMBOL_WAS_REMOVED_IN_MPI30’
>  2842 | #define MPI_Address(...)  THIS_SYMBOL_WAS_REMOVED_IN_MPI30(MPI_Address, MPI_Get_address)
>       |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ../../../src/comm/HPL_packL.c:172:22: note: in expansion of macro ‘MPI_Address’
>   172 |             ierr =   MPI_Address( bufs[nbufs], &disp[nbufs] );
>       |                      ^~~~~~~~~~~

The corresponding Debian bug is https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=952067

[luszczek]

Fixed by PR #2