===>  License GPLv3 accepted by the user
===>   shadowsocks-libev-0cipiertest depends on file: /usr/local/sbin/pkg - found
===> Fetching all distfiles required by shadowsocks-libev-0cipiertest for building
===>  Extracting for shadowsocks-libev-0cipiertest
=> SHA256 Checksum OK for shadowsocks-shadowsocks-libev-v0cipiertest_GH0.tar.gz.
===>  Patching for shadowsocks-libev-0cipiertest
/usr/bin/sed -i.bak -e 's|^#ifdef TCP_FASTOPEN|#if defined(TCP_FASTOPEN) \&\& defined(__linux)|'  /wrkdirs/shadowsocks-libev-0cipiertest-port/work/shadowsocks-libev-0cipiertest/src/local.c /wrkdirs/shadowsocks-libev-0cipiertest-port/work/shadowsocks-libev-0cipiertest/src/server.c
===>   shadowsocks-libev-0cipiertest depends on executable: gmake - found
===>  Configuring for shadowsocks-libev-0cipiertest
===>  Script "configure" failed unexpectedly.
Please report the problem to xiaoding+freebsd@xiaoding.org [maintainer] and
attach the
"/wrkdirs/shadowsocks-libev-0cipiertest-port/work/shadowsocks-libev-0cipiertest/config.log"
including the output of the failure of your make command. Also, it might be
a good idea to provide an overview of all packages installed on your system
(e.g. a /usr/local/sbin/pkg-static info -g -Ea).
*** Error code 1

Stop.
make: stopped in /shadowsocks-libev-0cipiertest-port
1