Undefined symbol: SSL_library_init with Syslog-ng

I have OpenSSL installed from source and linked the GLIB_LIBS and GLIB_CFLAGS to the correct directories during configure and configured with-SSL When I try to start syslog-ng (Version 3.6.4) on Ubuntu Server 14.04, I get the following errors: [2017-04-20T12:39:18.252222] Error opening plugin module; module='afsocket', error='/linux1/lib/syslog-ng/libsyslog-ng-crypto.so: undefined symbol: SSL_library_init' [2017-04-20T12:39:18.253205] Error opening plugin module; module='dbparser', error='/linux1/lib/syslog-ng/libsyslog-ng-crypto.so: undefined symbol: SSL_library_init' [2017-04-20T12:39:18.255387] Error opening plugin module; module='afsocket-tls', error='/linux1/lib/syslog-ng/libsyslog-ng-crypto.so: undefined symbol: SSL_library_init' [2017-04-20T12:39:18.256429] Error opening plugin module; module='cryptofuncs', error='/linux1/lib/syslog-ng/libsyslog-ng-crypto.so: undefined symbol: SSL_library_init' [2017-04-20T12:39:18.256964] Error opening plugin module; module='syslog-ng-crypto', error='/linux1/lib/syslog-ng/libsyslog-ng-crypto.so: undefined symbol: SSL_library_init'