On Tue, Feb 07, 2017 at 10:14:28PM +0200, Leon Romanovsky wrote:
> > > Compile the library to build/lib/libibverbs-dv-mlx5.so.1.0.13
> > > and setup a symlink build/lib/libmlx5-rdmav2.so -> libibverbs-dv-mlx5.so.1.0.13
> >
> > Just as a note, I'm calling it libmlx5 and not libibverbs-dv-mlx5.
That will clash with the legacy providers, don't recommend it.
> > > For install, use realpath like this:
> > >
> > > execute_process(COMMAND "realpath --relative-to ${VERBS_PROVIDER_DIR} ${CMAKE_INSTALL_LIBDIR}/libmlx5.so.1.0.13" OUTPUT_VARIBALE LINK_PATH)
> >
> > It doesn't work for me :(
Ah realpath needs the paths to exist.. Sigh
Another alternative is this:
python -c "import os; print(os.path.relpath('/usr/lib64/libmlx4.so','/usr/lib64/libibverbs'));"
> add_custom_target(share_link ALL DEPENDS "${DEST}" COMMAND ${CMAKE_COMMAND} -E create_symlink "lib${DEST}.so.${VERSION}"
> "${BUILD_LIB}/lib${DEST}-rdmav2.so")
> add_dependencies(share_link ${DEST})
The doesn't need a build time, just do:
execute_process(COMMAND "${CMAKE_COMMAND}" -E create_symlink
"lib${DEST}.so.${VERSION}"
"${BUILD_LIB}/lib${DEST}-rdmav2.so")
It creates a dangling link until compilation, which is fine..
> install(FILES "${BUILD_LIB}/lib${DEST}-rdmav2.so" DESTINATION "${CMAKE_INSTALL_LIBDIR}")
This line isn't needed, it is part of the next function
> rdma_install_symlink("${CMAKE_INSTALL_LIBDIR}/lib${DEST}.so.${VERSION}" "${VERBS_PROVIDER_DIR}/libmlx5-rdmav2.so")
Should be
rdma_install_symlink("${CMAKE_INSTALL_LIBDIR}/lib${DEST}.so.${VERSION}" "${VERBS_PROVIDER_DIR}/lib${DEST}-rdmav2.so")
And most distros will not allow an absolute link under /usr which is
why you need to make a relpath work and use that instead of
${CMAKE_INSTALL_LIBDIR}
Jason
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