gRPC should be installed as described in official doc
and built with
-DgRPC_SSL_PROVIDER=package
Install freeswitch repo as described in confluence, than
sudo yum installl -y freeswitch-devel
sudo ln -s /usr/share/freeswitch/pkgconfig/freeswitch.pc /usr/lib64/pkgconfig/ You need to check correct path to your pkgconfig directory