Daftar Isi

• NAME
• DESCRIPTION
  • FreeBSD core dumps from readdir_r with ithreads
  • $^X doesn't always contain a full path in FreeBSD
• AUTHOR

NAME

perlfreebsd - Perl version 5 on FreeBSD systems

DESCRIPTION

This document describes various features of FreeBSD that will affect how Perlversion 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 callsin preference to non-re-entrant versions. There is a bug in FreeBSD'sreaddir_r function in versions 4.5 and earlier that can cause a SEGV whenreading 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 sets $^X where possible to a full path by asking the operatingsystem. On FreeBSD the full path of the perl interpreter is found by usingsysctl with KERN_PROC_PATHNAME if that is supported, else by readingthe symlink /proc/curproc/file. FreeBSD 7 and earlier has a bug whereeither approach sometimes returns an incorrect value(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'sargv[0] value for $^X.

AUTHOR

Nicholas Clark <[email protected]>, collating wisdom supplied by Slaven Rezicand Tim Bunce.

Please report any errors, updates, or suggestions to [email protected].