Not having the commit first line as per contributing guide, I added those build requirements as part of commit 71248a2f7394b69c85f030f103afb2a8f6a5a49e, along with other changes.
If any issue introduced (eg., I added also pkgconfig which makes it easier to detect path to libs and include files), open an issue, or make a PR, but follow the contributing guidelines so the PR can be merged from here using the web ui:
* https://github.com/kamailio/kamailio/blob/master/.github/CONTRIBUTING.md#com...