Index: configure.in
===================================================================
--- configure.in.orig	2010-06-08 11:26:34.000000000 +0200
+++ configure.in	2010-07-01 14:07:03.849193105 +0200
@@ -1433,7 +1433,7 @@ rb_cv_missing_fconvert=yes, rb_cv_missin
     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