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PERLFREEBSD(1) Perl Programmers Reference Guide PERLFREEBSD(1) NAME README.freebsd - Perl version 5 on FreeBSD systems DESCRIPTION This document describes various features of FreeBSD that will affect how Perl version 5 (hereafter just Perl) is compiled and/or runs. FreeBSD core dumps from readdir_r with ithreads When perl is configured to use ithreads, it will use re-entrant library calls in preference to non-re-entrant versions. There is a bug in FreeBSD's "readdir_r" function in versions 4.5 and earlier that can cause a SEGV when reading large directories. A patch for FreeBSD libc is available (see <a href="http://www.freebsd.org/cgi/query-pr.cgi?pr=misc/30631" title="http://www.freebsd.org/cgi/query-pr.cgi?pr=misc/30631">http://www.freebsd.org/cgi/query-pr.cgi?pr=misc/30631</a> ) which has been integrated into FreeBSD 4.6. $^X doesn't always contain a full path in FreeBSD perl 5.8.0 sets $^X where possible to a full path by asking the operat- ing system. On FreeBSD the full path of the perl interpreter is found by reading the symlink /proc/curproc/file. There is a bug on FreeBSD, where the result of reading this symlink is can be wrong in certain circumstances (see <a href="http://www.freebsd.org/cgi/query-pr.cgi?pr=35703" title="http://www.freebsd.org/cgi/query-pr.cgi?pr=35703">http://www.freebsd.org/cgi/query-pr.cgi?pr=35703</a> ). In these cases perl will fall back to the old behaviour of using C's argv[0] value for $^X. Perl will no longer be part of "base FreeBSD" Not as bad as it sounds--what this means is that Perl will no longer be part of the kernel build system of FreeBSD. Perl will still very prob- ably be part of the "default install", and in any case the latest ver- sion will be in the ports system. The first FreeBSD version this change will affect is 5.0, all 4.n versions will keep the status quo. AUTHOR Nicholas Clark <nick@ccl4.org>, collating wisdom supplied by Slaven Rezic and Tim Bunce. Please report any errors, updates, or suggestions to <a href="mailto:perlbug@perl.org">perlbug@perl.org</a>. perl v5.8.8 2006-01-07 PERLFREEBSD(1)