On Tue, 30 Jul 2019, KingLotterry@163.com wrote: > maybe in environment or in 'make' command line I think.  quite possibly, but the impression i got from the Documentation file was that this could be done elsewhere in a different Kconfig file, and i have no idea how that would be done. rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================