RFE: Support building shared libraries

[opoplawski]

Attempting to build shared libraries results in:

CMake Error at src/mpi/CMakeLists.txt:27 (install):
  install TARGETS given no LIBRARY DESTINATION for shared library target
  "caf_mpi".

Is there a specific reason that this isn't supported?

[zbeekman]

Not that I'm aware of... overhauling the CMake build system a bit has been on my todo list for a while.

Can you share what you did to produce that error? I.e., how do you normally build shared libs with CMake?

[opoplawski]

To enable shared libraries you pass -DBUILD_SHARED_LIBS:BOOL=ON

All library targets also need a LIBRARY DESTINATION then in addition to the ARCHIVE DESTINATION. Also, you'll want to set the SOVERSION for the libraries - probably starting with 0.

[zbeekman]

Ok thanks for the deets. I'll try to get to this soon.

[zbeekman]

Also, you'll want to set the SOVERSION for the libraries - probably starting with 0.

@opoplawski Why starting with 0 vs the current MAJOR.MINOR? Or do you mean 0.major.minor?

EDIT: Upon further reading and looking at other projects, I'm going to do MAJOR.MINOR. We mostly follow semantic versioning, so this should work well, but do let me know if I'm missing something.