I am trying to compile nginx 1.7.9 with libressl 2.1.2 the same way I did with 1.7.7 but get the following error:

src/http/ngx_http_request.c: In function ‘ngx_http_ssl_handshake_handler’:
src/http/ngx_http_request.c:775:9: error: implicit declaration of function ‘SSL_get0_alpn_selected’ [-Werror=implicit-function-declaration]
cc1: all warnings being treated as errors
make[1]: *** [objs/src/http/ngx_http_request.o] Error 1
make[1]: Leaving directory `/usr/src/nginx-1.7.9'
make: *** [build] Error 2