Permalink
Browse files

Update README.freebsd with the new approach for making $^X absolute.

  • Loading branch information...
1 parent 6f31bef commit 7969fa3ad87a5c1e868e959d5ff214a5a1b2fdab Nicholas Clark committed Sep 28, 2011
Showing with 5 additions and 4 deletions.
  1. +5 −4 README.freebsd
View
@@ -22,10 +22,11 @@ which has been integrated into FreeBSD 4.6.
=head2 $^X doesn't always contain a full path in FreeBSD
-perl 5.8.0 sets C<$^X> where possible to a full path by asking the operating
-system. On FreeBSD the full path of the perl interpreter is found by reading
-the symlink F</proc/curproc/file>. FreeBSD has a bug where reading this
-symlink sometimes returns an incorrect value
+perl sets C<$^X> where possible to a full path by asking the operating
+system. On FreeBSD the full path of the perl interpreter is found by using
+C<sysctl> with C<KERN_PROC_PATHNAME> if that is supported, else by reading
+the symlink F</proc/curproc/file>. FreeBSD 7 and earlier has a bug where
+either approach sometimes returns an incorrect value
(see http://www.freebsd.org/cgi/query-pr.cgi?pr=35703 ).
In these cases perl will fall back to the old behaviour of using C's
argv[0] value for C<$^X>.

0 comments on commit 7969fa3

Please sign in to comment.