[PATCH 04/12] kbuild: remove redundant extra warning flags

Arnd Bergmann
2024-03-26T14:52:07Z

From: Arnd Bergmann <arnd@arndb.de>

There is no point in turning individual options off and then on again,
or vice versa, as the last one always wins. Now that -Wextra always
gets passed first, remove all the redundant lines about warnings
that are implied by either -Wall or -Wextra, and keep only the last
one that disables it in some configurations.

This should not have any effect but keep the Makefile more readable
and the command line shorter.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
scripts/Makefile.extrawarn | 16 ----------------
1 file changed, 16 deletions(-)

diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index c247552c192c..17b00d85f6aa 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -37,11 +37,6 @@ else
KBUILD_CFLAGS += -Wno-main
endif

-# These warnings generated too much noise in a regular build.
-# Use make W=1 to enable them (see scripts/Makefile.extrawarn)
-KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
-KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
-
# These result in bogus false positives
KBUILD_CFLAGS += $(call cc-disable-warning, dangling-pointer)

@@ -90,16 +85,8 @@ KBUILD_CFLAGS += -Wunused
#
ifneq ($(findstring 1, $(KBUILD_EXTRA_WARN)),)

-KBUILD_CFLAGS += $(call cc-option, -Wrestrict)
KBUILD_CFLAGS += -Wmissing-format-attribute
-KBUILD_CFLAGS += -Wold-style-definition
KBUILD_CFLAGS += -Wmissing-include-dirs
-KBUILD_CFLAGS += $(call cc-option, -Wunused-but-set-variable)
-KBUILD_CFLAGS += $(call cc-option, -Wunused-const-variable)
-KBUILD_CFLAGS += $(call cc-option, -Wpacked-not-aligned)
-KBUILD_CFLAGS += $(call cc-option, -Wformat-overflow)
-KBUILD_CFLAGS += $(call cc-option, -Wformat-truncation)
-KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation)

KBUILD_CPPFLAGS += -Wundef
KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1
@@ -150,9 +137,6 @@ ifneq ($(findstring 2, $(KBUILD_EXTRA_WARN)),)
KBUILD_CFLAGS += -Wdisabled-optimization
KBUILD_CFLAGS += -Wshadow
KBUILD_CFLAGS += $(call cc-option, -Wlogical-op)
-KBUILD_CFLAGS += -Wmissing-field-initializers
-KBUILD_CFLAGS += -Wtype-limits
-KBUILD_CFLAGS += $(call cc-option, -Wmaybe-uninitialized)
KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)

KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN2
--
2.39.2