$ ldd /usr/local/lib/php/20131226/intl.so
/usr/local/lib/php/20131226/intl.so:
        libicui18n.so.55 => not found (0)
        libicuuc.so.55 => not found (0)
        libicudata.so.55 => not found (0)
        libicuio.so.55 => not found (0)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x80165d000)
        libc.so.7 => /lib/libc.so.7 (0x80081f000)

$ cd /usr/ports/devel/ruby-gems
$ make build deinstall reinstall
[...]
===>   Registering installation for ruby22-gems-2.4.7
[...]
$ pkg audit
0 problem(s) in the installed packages found.