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PERLFREEBSD(1) Perl Programmers Reference Guide PERLFREEBSD(1)
README.freebsd - Perl version 5 on FreeBSD systems
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 prefer-
ence to non-re-entrant versions. There is a bug in FreeBSD's "readdir_r" function in ver-
sions 4.5 and earlier that can cause a SEGV when reading large directories. A patch for
FreeBSD libc is available (see http://www.freebsd.org/cgi/query-pr.cgi?pr=misc/30631 )
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 operating system. On Free-
BSD the full path of the perl interpreter is found by reading the symlink /proc/cur-
proc/file. There is a bug on FreeBSD, where the result of reading this symlink is can be
wrong in certain circumstances (see http://www.freebsd.org/cgi/query-pr.cgi?pr=35703 ).
In these cases perl will fall back to the old behaviour of using C's argv value for
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 probably be part of the "default install",
and in any case the latest version 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.
Nicholas Clark <email@example.com>, collating wisdom supplied by Slaven Rezic and Tim Bunce.
Please report any errors, updates, or suggestions to firstname.lastname@example.org.
perl v5.8.9 2007-11-17 PERLFREEBSD(1)
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