Commit 8cc7af75 authored by Masahiro Yamada's avatar Masahiro Yamada
Browse files

kbuild: remove ARCH_{CPP,A,C}FLAGS 



These flags were added by commit 61754c18 ("kbuild: Allow arch
Makefiles to override {cpp,ld,c}flags") to allow ARC to override -O2.

We did not see any other usage after all. Now that ARC switched to
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3, there is no more user of
these variables.

Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
parent 15f5db60

Documentation/kbuild/makefiles.rst

+0 −7
Original line number Diff line number Diff line
@@ -959,13 +959,6 @@ When kbuild executes, the following steps are followed (roughly): 
	$(KBUILD_ARFLAGS) set by the top level Makefile to "D" (deterministic

	mode) if this option is supported by $(AR).



    ARCH_CPPFLAGS, ARCH_AFLAGS, ARCH_CFLAGS   Overrides the kbuild defaults



	These variables are appended to the KBUILD_CPPFLAGS,

	KBUILD_AFLAGS, and KBUILD_CFLAGS, respectively, after the

	top-level Makefile has set any other flags. This provides a

	means for an architecture to override the defaults.



    KBUILD_LDS



	The linker script with full path. Assigned by the top-level Makefile.

Makefile

+4 −10
Original line number Diff line number Diff line
@@ -668,11 +668,6 @@ RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc 
export RETPOLINE_CFLAGS

export RETPOLINE_VDSO_CFLAGS



# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default

# values of the respective KBUILD_* variables

ARCH_CPPFLAGS :=

ARCH_AFLAGS :=

ARCH_CFLAGS :=

include arch/$(SRCARCH)/Makefile



ifdef need-config
@@ -927,11 +922,10 @@ include scripts/Makefile.kasan 
include scripts/Makefile.extrawarn

include scripts/Makefile.ubsan



# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the

# last assignments

KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)

KBUILD_AFLAGS   += $(ARCH_AFLAGS)   $(KAFLAGS)

KBUILD_CFLAGS   += $(ARCH_CFLAGS)   $(KCFLAGS)

# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments

KBUILD_CPPFLAGS += $(KCPPFLAGS)

KBUILD_AFLAGS   += $(KAFLAGS)

KBUILD_CFLAGS   += $(KCFLAGS)



KBUILD_LDFLAGS_MODULE += --build-id

LDFLAGS_vmlinux += --build-id

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