)
# Checks for header files.
-AC_CHECK_HEADERS([inttypes.h stddef.h stdlib.h string.h unistd.h])
+AC_CHECK_HEADERS([inttypes.h stddef.h stdlib.h string.h unistd.h time.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
# Checks for library functions.
AC_FUNC_MALLOC
-AC_CHECK_FUNCS([atexit memset sqrt strdup])
+AC_CHECK_FUNCS([atexit memset sqrt strdup nanosleep])
AC_CONFIG_FILES([Makefile])
AC_OUTPUT