More comments for the FreeBSD threads hints.

p4raw-id: //depot/perl@21191

diff --git a/hints/freebsd.sh b/hints/freebsd.sh
index 0ded431..396abdd 100644 (file)
--- a/hints/freebsd.sh
+++ b/hints/freebsd.sh
@@ -223,6 +223,11 @@ EOM
                 exit 1
              fi
              case "$osvers" in
+             # 500016 is the first osreldate in which one could
+             # just link against libc_r without disposing of libc
+             # at the same time.  500016 ... up to whatever it was
+             # on the 31st of August 2003 can still be used with -pthread,
+             # but it is not necessary.
              5.*)      if [ `/sbin/sysctl -n kern.osreldate` -lt 500016 ]; then
                                 ldflags="-pthread $ldflags"
                         fi