Question

What are the list of predefined Make macros available for linux kernel build

I have come across

make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build

make V=2 [targets] 2 => give reason for rebuild of target

make O=dir [targets] Locate all output files in “dir”, including
.config

make C=1 [targets] Check all c source with $CHECK (sparse by default)

make C=2 [targets] Force check of all c source with $CHECK

Then soon I have come across a macro M

$ make M=drivers/usb/serial

which will build all the needed files in that directory and link the final module images.

I am wondering where can I find the complete list of all make macros.

Thanks.

Answer 1

It’s not macros, just variable assignment. Then makefile decides what to do depending on that variables. Take a look on
Passing additional variables from command line to make