openmpi not linking

[Pedro Valdez]

MPICH2 is long gone, as it requires python2, that almost every linux has removed. Now find gcc 13 will not compile MPICH3, due to compilers becoming more pedantic. So I tried openmpi. But the build fails at the make icps stage.

undefined reference to symbol 'opal_error_register'

error adding symbols: DSO missing from command line

Search engine finds little about opal_error_register.

Has anybody else had this problem, and did you solve it?

[Lewis Goss]

Dear Pedro:

I installed gcc and gfortran 9 (which is not the default) under most recent version of ubuntu (default is v11).

I was able to install using openmpi, which I recommend also, and I am using the most recent main branch of ubuntu, which is Ubuntu 22.043 LTS. 

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[Pedro Valdez]

Someone else told me they used openmpi in Debian 11. I guess I stuffed something up trying to install openmpi over a broken MPICH mess. Anyhow, I found MPICH 4.1 works. It just takes a lot longer to compile, as these things get more bloated.