I think it should use dynamic linking same as tls module.
``` root@qa1-voip:/usr/src/kamailio# make clean &&make && cd src/modules/auth_ephemeral/; make && ldd auth_ephemeral.so && cd ../tls/ && make && ldd tls.so [cut] make -C src/ make[1]: Entering directory '/usr/src/kamailio/src' make[1]: 'kamailio' is up to date. make[1]: Leaving directory '/usr/src/kamailio/src' make: 'auth_ephemeral.so' is up to date. linux-vdso.so.1 = (0x00007ffc0cd61000) libc.so.6 =/lib/x86_64-linux-gnu/libc.so.6 (0x00007fb15287c000) /lib64/ld-linux-x86-64.so.2 (0x00007fb152e64000) make: 'tls.so' is up to date. linux-vdso.so.1 = (0x00007fffe5104000) libssl.so.1.0.0 =/lib/x86_64-linux-gnu/libssl.so.1.0.0 (0x00007f77edbd6000) libc.so.6 =/lib/x86_64-linux-gnu/libc.so.6 (0x00007f77ed80c000) libcrypto.so.1.0.0 =/lib/x86_64-linux-gnu/libcrypto.so.1.0.0 (0x00007f77ed3c8000) /lib64/ld-linux-x86-64.so.2 (0x00007f77ee0ce000) libdl.so.2 =/lib/x86_64-linux-gnu/libdl.so.2 (0x00007f77ed1c4000) root@qa1-voip:/usr/src/kamailio/src/modules/tls#
```