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kbuild: drop V=0 support 

The top Makefile sets KBUILD_VERBOSE to 0 by default, it looks weird
now because V=1 and V=2 can be OR'ed as V=12. The default should be
empty.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
This commit is contained in:
Masahiro Yamada 2022-12-23 01:25:35 +09:00
parent 6ae4b9868a
commit 83d98d73b4
2 changed files with 4 additions and 7 deletions
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4
Documentation/kbuild/makefiles.rst
View File

@ -523,7 +523,7 @@ more details, with real examples.
$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
@$(kecho) ' Kernel: $(boot)/$@ is ready'
When kbuild is executing with KBUILD_VERBOSE=0, then only a shorthand
When kbuild is executing with KBUILD_VERBOSE unset, then only a shorthand
of a command is normally displayed.
To enable this behaviour for custom commands kbuild requires
two variables to be set::
@ -544,7 +544,7 @@ more details, with real examples.
GEN lib/crc32table.h
will be displayed with "make KBUILD_VERBOSE=0".
will be displayed with "make KBUILD_VERBOSE=".
3.12 Command change detection
-----------------------------

7
Makefile
View File

@ -78,9 +78,6 @@ unexport GREP_OPTIONS
ifeq ("$(origin V)", "command line")
KBUILD_VERBOSE = $(V)
endif
ifndef KBUILD_VERBOSE
KBUILD_VERBOSE = 0
endif
quiet = quiet_
Q = @
@ -102,7 +99,7 @@ endif
ifneq ($(findstring s,$(short-opts)),)
quiet=silent_
KBUILD_VERBOSE = 0
override KBUILD_VERBOSE :=
endif
export quiet Q KBUILD_VERBOSE
@ -1774,7 +1771,7 @@ help:
printf " %-16s - Show all of the above\\n" help-boards; \
echo '')
@echo ' make V=n [targets] 0: quiet build (default), 1: verbose build'
@echo ' make V=n [targets] 1: verbose build'
@echo ' 2: give reason for rebuild of target'
@echo ' V=1 and V=2 can be combined with V=12'
@echo ' make O=dir [targets] Locate all output files in "dir", including .config'