AC_CHECK_HEADERS(shadow.h netinet/tcp.h sys/security.h security/pam_appl.h)
AC_CHECK_HEADERS(stropts.h poll.h readline.h history.h readline/readline.h)
AC_CHECK_HEADERS(readline/history.h sys/capability.h syscall.h sys/syscall.h)
-AC_CHECK_HEADERS(sys/acl.h sys/cdefs.h)
+AC_CHECK_HEADERS(sys/acl.h sys/cdefs.h glob.h)
AC_CHECK_SIZEOF(int,cross)
AC_CHECK_SIZEOF(long,cross)