[5.0.0rc13] ROCm dependency leaks into libmpi.so even with "--enable-mca-dso=yes"

[mkre]

What version of Open MPI are you using? (e.g., v3.0.5, v4.0.2, git branch name and hash, etc.)

5.0.0rc13

Describe how Open MPI was installed (e.g., from a source/distribution tarball, from a git clone, from an operating system distribution package, etc.)

Compiled from source

Details of the problem

I am experimenting with 5.0.0rc13. I am trying to build all MCA components as DSOs using --enable-mca-dso=yes and enable ROCm support using --with-rocm. As expected, I end up with a mca_accelerator_rocm.so file in my lib/openmpi directory. However, at the same time my top-level libmpi.so is having a dependency on libamdhip64.so.5. I cannot guarantee that this library will always be available at run time (hence building ROCm support as a DSO), so how can I avoid this link dependency?

[edgargabriel]

@mkre would you have a chance to test the fix in https://github.com/edgargabriel/ompi/tree/topic/rocm-ldflags-libs ? I think it resolves the problem, but would like you to confirm it if possible. The current fix is for main, but I would backport it to 5.0 if it fixes the issue (not sure whether it would make it in 5.0.0 or 5.0.1 though)

[mkre]

@edgargabriel, with your fix applied, the dependency from libmpi.so to libamdhip64.so is gone. Thanks!

[wenduwan]

@edgargabriel Is this still targeted for the next 5.0 release?

[edgargabriel]

@wenduwan yes, the fix is already in master, and the pr to 5.0 has been also filed and reviewed (but not yet merged)

[janjust]

closing, fixed with #12047