How to link to a shared library using Automake

Having spent most of my development career in IDE I'm currently attempting to extend an Opensource project C-ICAP that uses Autoconf and Automake, so this may be a glaringly obvious answer to those more familiar with this toolset. I'm attempting to add a new service to the ICAP service that uses our proprietary shared library but can't work out the necessary updates to the Makefile.am to add our library to the link operation of the new service.

I need to create the equivalent of

-lmylibrary

I've tried the following,

LDADD = mylibraryLDADD = libmylibrary.soLIBADD = mylibraryLIBADD = libmylibrary.so

but when I 'make' the project, there is no mention of 'mylibrary' in the build log.When I tried

LIBS = mylibrary

'mylibrary' appeared in the build log, but running ldd on the built .so file did not include 'mylibrary'.

The project is being installed onto an Ubuntu host.Our 'libmylibrary.so' is installed into /usr/lib.

I am running the following sequence of commands after updates to the Makefile.am

aclocalautoconfautomake --add-missing./configure --with-c-icap=/usr/local/c-icap --prefix=/usr/local/c-icapmake

What am I missing to enable the new service to link to the installed shared libary?