Thanks Michal for correcting the concept. :) And I get to understand your point. It's an out-of-tree module makefile, I'll still try to figure out how -pg removed. Best regards, Raphael > -----origin----- > sender: Michal Marek [mailto:mmarek@xxxxxxxx] > > On 2015-08-20 13:03, RaphaelWu@xxxxxxxxxxxxxx wrote: > > Let me show the simplified piece. > > > > obj-m += test.o > > KBUILD_CFLAGS := $(subst -pg,,$(KBUILD_CFLAGS)) > > > > all: > > @echo $(KBUILD_CFLAGS) > > $(MAKE) -C /lib/modules/`uname`/build M=$(PWD) modules > > > > So if it's not a kbuild makefile, why the -pg flag can be successful removed > through KBUILD_CFLAGS. > > There are no all: rules in kbuild files. > > Michal The information transmitted in this e-mail is intended only for the addressee and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of this information by persons or entities other than the intended recipient is prohibited. If you received this e-mail in error, please notify the sender immediately, and delete this e-mail and any attachments. Thank you. -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
