AC_CHECK_HEADER(unistd.h,[AC_CHECK_FUNCS(lchown)])
AC_CHECK_HEADER(readline/readline.h, [HaveReadlineReadlineH=YES], [HaveReadlineReadlineH=NO])
AC_CHECK_HEADER(unistd.h,[AC_CHECK_FUNCS(lchown)])
AC_CHECK_HEADER(readline/readline.h, [HaveReadlineReadlineH=YES], [HaveReadlineReadlineH=NO])