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kbuild: use 4-space indentation when followed by conditionals

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GNU Make manual [1] clearly forbids a tab at the beginning of the
conditional directive line:
 "Extra spaces are allowed and ignored at the beginning of the
  conditional directive line, but a tab is not allowed."

This will not work for the next release of GNU Make, hence commit
82175d1f94 ("kbuild: Replace tabs with spaces when followed by
conditionals") replaced the inappropriate tabs with 8 spaces.

However, the 8-space indentation cannot be visually distinguished.
Linus suggested 2-4 spaces for those nested if-statements. [2]

This commit redoes the replacement with 4 spaces.

[1]: https://www.gnu.org/software/make/manual/make.html#Conditional-Syntax
[2]: https://lore.kernel.org/all/CAHk-=whJKZNZWsa-VNDKafS_VfY4a5dAjG-r8BZgWk_a-xSepw@mail.gmail.com/

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Masahiro Yamada 2024-02-02 10:31:42 +09:00
parent 841c351693
commit 3b9ab248bc
4 changed files with 14 additions and 14 deletions
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12
Makefile
View File

@ -294,15 +294,15 @@ may-sync-config := 1
single-build :=
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
need-config :=
endif
endif
endif
ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),)
may-sync-config :=
endif
endif
endif
need-compiler := $(may-sync-config)
@ -323,9 +323,9 @@ endif
# We cannot build single targets and the others at the same time
ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),)
single-build := 1
ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),)
ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),)
mixed-build := 1
endif
endif
endif
# For "make -j clean all", "make -j mrproper defconfig all", etc.

4
arch/m68k/Makefile
View File

@ -15,10 +15,10 @@
KBUILD_DEFCONFIG := multi_defconfig
ifdef cross_compiling
ifeq ($(CROSS_COMPILE),)
ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := $(call cc-cross-prefix, \
m68k-linux-gnu- m68k-linux- m68k-unknown-linux-gnu-)
endif
endif
endif
#

4
arch/parisc/Makefile
View File

@ -50,12 +50,12 @@ export CROSS32CC
# Set default cross compiler for kernel build
ifdef cross_compiling
ifeq ($(CROSS_COMPILE),)
ifeq ($(CROSS_COMPILE),)
CC_SUFFIXES = linux linux-gnu unknown-linux-gnu suse-linux
CROSS_COMPILE := $(call cc-cross-prefix, \
$(foreach a,$(CC_ARCHES), \
$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
endif
endif
endif
ifdef CONFIG_DYNAMIC_FTRACE

8
arch/x86/Makefile
View File

@ -112,13 +112,13 @@ ifeq ($(CONFIG_X86_32),y)
# temporary until string.h is fixed
KBUILD_CFLAGS += -ffreestanding
ifeq ($(CONFIG_STACKPROTECTOR),y)
ifeq ($(CONFIG_SMP),y)
ifeq ($(CONFIG_STACKPROTECTOR),y)
ifeq ($(CONFIG_SMP),y)
KBUILD_CFLAGS += -mstack-protector-guard-reg=fs -mstack-protector-guard-symbol=__stack_chk_guard
else
else
KBUILD_CFLAGS += -mstack-protector-guard=global
endif
endif
endif
else
BITS := 64
UTS_MACHINE := x86_64