Generate separate objects for cu and nvrtc

[abelsiqueira]

Description

Generate separate objects for cu and nvrtc. Namely libcudawrappers_cu.so and libcudawrappers_nvrtc.so.

Related issues:

• Generate separate objects for each wrapper #95

Instructions to review the pull request

• Check that CHANGELOG.md has been updated if necessary

Clone and verify

cd $(mktemp -d --tmpdir cudawrappers-XXXXXX)
git clone https://github.com/nlesc-recruit/cudawrappers .
git checkout <this-branch>
cmake -S . -B build
make -C build
make -C build format # Nothing should change
make -C build lint # linting is broken until we fix the issues (see #92)

• Look into build for the .so files.

[fdiblen]

We are not sure if this is what we need as #96 is suggesting something else.

[csbnw]

There is no need to build libcudawrappers.so from source, you could just link all the libcudawrappers_*.so files together?

[abelsiqueira]

From what I understood no, the .so does not have the necessary information to be merged or linked in another .so.

[abelsiqueira]

Ref: https://stackoverflow.com/questions/915128/merge-multiple-so-shared-libraries

[csbnw]

You might want to consider the use of CMake object libraries. You can make object libraries for cudawrappers_cu and cudawrappers_nvrt and link these into the final libcudawrappers_cu.so and libcudawrappers_nvrtc.so, as well as libcudawrappers.so.

[fdiblen]

I think we need to make this more clear before we do more work.

[fdiblen]

Ref:

• Summary of CMake refactor plan #141

[bouweandela]

Superseded by #150