Re: OFED-4.8, rdma-core, and library paths

[Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>]

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On Tue, Feb 07, 2017 at 11:42:06AM -0700, Jason Gunthorpe wrote:
> On Tue, Feb 07, 2017 at 08:35:38PM +0200, Leon Romanovsky wrote:
> > I made it (rdma_shared_provider function), but have a very hard time
> > to properly create ".." symlink, because during the build (in place too)
> > the output is placed in build/lib in flat structure and symlinks need to
> > be without "..". But during installation phase, these symlinks should
> > be changed to ".." and it doesn't work for me in automatic way :(
>
> For symlinks build/ and installed are two different flows, they don't intermix
>
> 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.

>
> 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 :(
-- verbs_provder_dir = /usr/lib64/libibverbs
-- install_libdir = /usr/lib64
-- link_path =

lrwxrwxrwx 1 root root     18 Feb  7 21:43 /lib64/libibverbs/libmlx5-rdmav2.so -> /libmlx5.so.1.0.13
lrwxrwxrwx 1 root root     10 Feb  7 21:43 /lib64/libmlx5-rdmav2.so -> libmlx5.so
lrwxrwxrwx 1 root root     12 Feb  7 21:43 /lib64/libmlx5.so -> libmlx5.so.1
lrwxrwxrwx 1 root root     17 Feb  7 21:43 /lib64/libmlx5.so.1 -> libmlx5.so.1.0.13
-rwxr-xr-x 1 root root 666637 Feb  7 21:43 /lib64/libmlx5.so.1.0.13
lrwxrwxrwx 1 root root     18 Feb  7 21:43 /usr/lib64/libibverbs/libmlx5-rdmav2.so -> /libmlx5.so.1.0.13
lrwxrwxrwx 1 root root     10 Feb  7 21:43 /usr/lib64/libmlx5-rdmav2.so -> libmlx5.so
lrwxrwxrwx 1 root root     12 Feb  7 21:43 /usr/lib64/libmlx5.so -> libmlx5.so.1
lrwxrwxrwx 1 root root     17 Feb  7 21:43 /usr/lib64/libmlx5.so.1 -> libmlx5.so.1.0.13
-rwxr-xr-x 1 root root 666637 Feb  7 21:43 /usr/lib64/libmlx5.so.1.0.13


>  rdma_install_symlink("${LINK_PATH}/libibverbs-dv-mlx5.so.1.0.13" "${VERBS_PROVIDER_DIR}/libmlx5-rdmav2.so")
>
> The rdma_install_symlink helper takes care of the install step.
>
> Jason

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