--- a/configure.ac
+++ b/configure.ac
@@ -376,14 +376,14 @@
 esac
 AC_SUBST(native_abs_top_srcdir)
 
-case $host_os in
+case $host in
      aix*)
        ## Don't use AIX driver until starts to really work
        ## cd_drivers="${cd_drivers}, AIX"
        ## AC_DEFINE([HAVE_AIX_CDROM], [1],
        ##     [Define 1 if you have AIX CD-ROM support])
        ;;
-     darwin[[6-9]].*|darwin[[1-9]][[0-9]].*)
+     *-apple-darwin*)
        AC_CHECK_HEADERS(IOKit/IOKitLib.h CoreFoundation/CFBase.h,
                         [have_iokit_h="yes"])
        if test "x$have_iokit_h" = "xyes" ; then