remove obsolete objformat
--- configure.orig	2008-06-06 11:23:51.000000000 +0900
+++ configure	2008-06-06 11:24:15.000000000 +0900
@@ -6339,7 +6339,7 @@
 
 freebsd*)
   objformat=`test -x /usr/bin/objformat && /usr/bin/objformat || echo aout`
-  version_type=freebsd-$objformat
+  version_type=freebsd-elf
   case $version_type in
     freebsd-elf*)
       library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so $libname.so'