# pkg_add -r strace Fetching ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-9.0-release/Latest/strace.tbz... Done. pkg_add: warning: package 'strace-4.5.18_1' requires 'perl-5.12.4_3', but 'perl-5.12.4_4' is installed