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Re: Suppress "is up to date" log?
From: |
Kaz Kylheku |
Subject: |
Re: Suppress "is up to date" log? |
Date: |
Sun, 06 Nov 2022 07:47:09 -0800 |
User-agent: |
Roundcube Webmail/1.4.13 |
On 2022-11-06 02:28, Masahiro Yamada wrote:
> Is there a solution to suppress this 'up to date' log?
Hi, Masahiro,
Use make -s. That option also suppresses the printing of
the recipe commands that are being executed. However, that
is not a problem for a makefile which already hides them
with the @ character, and performs its own customized printing.
0:[1106:073304]:sun-go:~/txr$ make all
make: Nothing to be done for 'all'.
0:[1106:073306]:sun-go:~/txr$ make -s
0:[1106:073307]:sun-go:~/txr$ touch eval.c stdlib/optimize.tl
0:[1106:073318]:sun-go:~/txr$ make -s
CC eval.c -> opt/eval.o
LINK opt/txr.o [.. SNIP ...] opt/gzio.o -> txr
TXR stdlib/optimize.tl -> stdlib/optimize.tlo
0:[1106:073325]:sun-go:~/txr$ make -s
0:[1106:073327]:sun-go:~/txr$
Unfortunately, I see that the kernel Makefile is too clever;
when you run make -s, it obeys that and suppresses its
custom output like:
CC init/version.o
LD init/built-in.o
LD vmlinux.o
Maybe there is a way to opt-in to that output in spite of
make -s?
(I work in embedded, so I'm not on the latest kernel;
I'm doing everything here with 4.9.)
I see that in tools/build/Makefile.build, it is checking
for -s being in MAKEFLAGS and manipulating the quiet
variable. This works for me:
make -s quiet=quiet_
The check for -s in MAKEFLAGS is done in a way that
the user's V variable is ignored. At a glance, I don't
see any deliberate interface for overriding that; so
I resorted to overriding the quiet variable with the
correct internal value to get the default abbreviated
comand printing mode.
Cheers ...