quiet compile kernel

Prasad Joshi prasadjoshi124 at gmail.com
Wed Apr 27 13:04:02 EDT 2011

On Wed, Apr 27, 2011 at 5:48 PM, loody <miloody at gmail.com> wrote:
> Hi all:
> I found the compile message of kernel is quite succinct, when we set
> V=0, and I try to make my project output as clean as kernel did.
> Then I traced the Makefile and it just define "quiet" and "Q" then export it.
> Where is the exact place that quiet build begin?
> Is that complicated to copy this quiet-build process?

Here is a simple way to do it

ifeq ($(strip $(V)),)
        E = @echo
        Q = @
        E = @\#
        Q =
export E Q

%.o: %.c
        $(E) "  CC      " $@
        $(Q) $(CC) -c $(CFLAGS) $< -o $@

So when V is defined, the make command will display the detailed
compilation message or else it will only show an echoed message. One
can also add a check for verbose level.

Thanks and Regards,

> --
> Thanks for your help,
> miloody
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