Specifying both `--enable-client-only` and `--enable-jni` configuration options will cause compilation error

[deviance]

$ make [--snip--] Making all in src Making all in est CC est.lo CC est_ossl_util.lo CC est_client_proxy.lo CC est_client.lo CC est_client_http.lo CC multipart_parser.lo CC jsmn.lo CCLD libest_client.la make[4]: Nothing to be done for 'all-am'. Making all in java/jni make[3]: *** No rule to make target '../../src/est/libest.la', needed by 'libjest.la'. Stop.