Failing to run in Ubuntu 22.04 after make install because of libltfs.so.0 not being found

[13e7h4x]

Describe the bug

After a clean make / make-install in Ubuntu 22.04, LTFS fails to run because it seems to be looking for libltfs.so.0 in a different place than where it sits.

To Reproduce
Steps to reproduce the behavior:

1. Install all dependencies (apt install automake autoconf libtool fuse uuid libxml2 libxml2-dev libsnmp-dev pkg-config libfuse-dev uuid-dev icu-devtools)
2. Git clone https://github.com/LinearTapeFileSystem/ltfs
3. Execute ./autogen.sh, ./configure, make, make install
4. Run "ltfs" on the shell (sudo or not)

ltfs: error while loading shared libraries: libltfs.so.0: cannot open shared object file: No such file or directory

Worth nothing that libltfs.so.0 was properly generated and exists:

sudo find / -name libltfs.so.0
/usr/local/lib/libltfs.so.0
/home/user/ltfs/src/libltfs/.libs/libltfs.so.0

Expected behavior
The application should run.

Desktop (please complete the following information):

• OS: Ubuntu Linux 22.04 - 5.15.0-97-generic

[13e7h4x]

This can be fixed with:
sudo ldconfig

Can this be included in the "make install" routine, or at least included in the Ubuntu install instructions?

[piste-jp]

It is really generic knowledge to refresh shard library cache when an error happens in dynamic link loader.

And I never know the project that make install make it at all in other OSS projects. I think it is good to describe something to README or another place.

Can you please write it up and open a PR for this project?