FreeBSD: cater for deprecation of objformat

[Ralf Wildenhues]

The manpage of objformat reveals that upcoming FreeBSD 6 might not have
it any more.  OK for this patch (all branches) to cater for this?
(I merely guessed that using versions up to 3 for aout should be safe.)

Should I rather cross-check this on one of their mailing lists?

Regards,
Ralf

        * m4/libtool.m4 (_LT_SYS_DYNAMIC_LINKER) [ freebsd ]: Do not
        assume `aout' for modern FreeBSD by absence of deprecated
        `objformat'.

Index: m4/libtool.m4
===================================================================
RCS file: /cvsroot/libtool/libtool/m4/libtool.m4,v
retrieving revision 1.209
diff -u -r1.209 libtool.m4
--- m4/libtool.m4       10 Aug 2005 06:25:10 -0000      1.209
+++ m4/libtool.m4       14 Aug 2005 08:22:19 -0000
@@ -1939,7 +1939,14 @@
 freebsd* | dragonfly*)
   # DragonFly does not have aout.  When/if they implement a new
   # versioning mechanism, adjust this.
-  objformat=`test -x /usr/bin/objformat && /usr/bin/objformat || echo aout`
+  if test -x /usr/bin/objformat; then
+    objformat=`/usr/bin/objformat`
+  else
+    case $host_os in
+    freebsd[[123]]*) objformat=aout ;;
+    *) objformat=elf ;;
+    esac
+  fi
   version_type=freebsd-$objformat
   case $version_type in
     freebsd-elf*)