can’t compile asterisk 13.15.0 (guess higher versions also ) due to absence of support libsrtp v2.x.x
checking for mandatory modules: CRYPTO SRTP OPENSSL… fail
configure: *** The SRTP installation appears to be missing or broken.
configure: *** Either correct the installation, or run configure
configure: *** including --without-srtp.
using libbsrtp v1.5.x - all correct.
centos 6.9 x64
https://issues.asterisk.org/jira/browse/ASTERISK-26976 was closed due to wrong place.