diff -ur ruby-1.8.6-preview1-o/configure.in ruby-1.8.6-preview1-n/configure.in
--- ruby-1.8.6-preview1-o/configure.in	2007-02-20 01:02:11.000000000 -0700
+++ ruby-1.8.6-preview1-n/configure.in	2007-02-20 01:20:48.000000000 -0700
@@ -1241,7 +1241,7 @@
     if test "$rb_cv_missing_fconvert" = yes; then
       AC_DEFINE(MISSING_FCONVERT)
     fi
-    AC_LIBOBJ([x68.o])
+    AC_LIBOBJ([x68])
     CFLAGS="$CFLAGS -fansi-only"
     XCFLAGS="$XCFLAGS -cc1-stack=262144 -cpp-stack=2694144"
     EXEEXT=.x