[PATCH 5/5] kbuild: drop V=0 support

Masahiro Yamada
2022-12-22T16:26:10Z

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>
---

Documentation/kbuild/makefiles.rst | 4 ++--
Makefile | 7 ++-----
2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
index 6b7368d1f516..59085ffbe99a 100644
--- a/Documentation/kbuild/makefiles.rst
+++ b/Documentation/kbuild/makefiles.rst
@@ -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
-----------------------------
diff --git a/Makefile b/Makefile
index bd69bf73a256..99cb8c9de53a 100644
--- a/Makefile
+++ b/Makefile
@@ -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
@@ -1761,7 +1758,7 @@ 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'
--
2.34.1