Hi, On 4/14/20 2:22 PM, Shuah Khan wrote: > -CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/ $(MOUNT_CFLAGS) > -LDLIBS += $(MOUNT_LDLIBS) > +CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/ $(VAR_CFLAGS) > +LDLIBS += $(VAR_LDLIBS) (1) Can that series of ../../../.. be replaced by $(objtree)? If so, that would be much cleaner IMO. (2) I can't find anything that checks that ../../../../usr/include exists (or has been installed via 'make headers_install'). Or anything that requires that CONFIG_HEADERS_INSTALL be set/enabled. Well, other than a Makefile error, but that's not a nice way to find out. Preferably we would have some Kconfig check/enforcement or at least some documentation. Thoughts? thanks. -- ~Randy