[PATCH] kbuild: remove AS variable

[PATCH] kbuild: remove AS variable

[Masahiro Yamada]

The assembler files in the barebox are *.S instead of *.s, so they must
be preprocessed. Since 'as' of GNU binutils is not able to preprocess,
we always use $(CC) as an assembler driver.

Remove AS variable.

Linux also removed AS. See Linux commits:

 aa824e0c962b ("kbuild: remove AS variable")
 1ca0c2f61211 ("kbuild: remove unused AS assignment")

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 Makefile          | 3 +--
 arch/arm/Makefile | 2 --
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index d483302fe..efb5fc9ee 100644
--- a/Makefile
+++ b/Makefile
@@ -372,7 +372,6 @@ KBUILD_HOSTLDLIBS   := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
 
 # Make variables (CC, etc...)
 
-AS		= $(CROSS_COMPILE)as
 LD		= $(CROSS_COMPILE)ld
 CC		= $(CROSS_COMPILE)gcc
 CPP		= $(CC) -E
@@ -425,7 +424,7 @@ LDFLAGS_barebox	:= -Map barebox.map
 LDFLAGS_barebox += $(call ld-option, --no-dynamic-linker)
 LDFLAGS_pbl += $(call ld-option, --no-dynamic-linker)
 
-export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
+export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC
 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL PYTHON3 UTS_MACHINE
 export LEX YACC
 export HOSTCXX CHECK CHECKFLAGS
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 6c7373c20..46dfe1f62 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -10,11 +10,9 @@ endif
 
 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
 KBUILD_CPPFLAGS	+= -mbig-endian
-AS		+= -EB
 LD		+= -EB
 else
 KBUILD_CPPFLAGS	+= -mlittle-endian
-AS		+= -EL
 LD		+= -EL
 endif
 
-- 
2.25.1


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Re: [PATCH] kbuild: remove AS variable

[Sascha Hauer]

On Wed, Jun 17, 2020 at 11:57:36AM +0900, Masahiro Yamada wrote:
> The assembler files in the barebox are *.S instead of *.s, so they must
> be preprocessed. Since 'as' of GNU binutils is not able to preprocess,
> we always use $(CC) as an assembler driver.
> 
> Remove AS variable.
> 
> Linux also removed AS. See Linux commits:
> 
>  aa824e0c962b ("kbuild: remove AS variable")
>  1ca0c2f61211 ("kbuild: remove unused AS assignment")
> 
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
> 
>  Makefile          | 3 +--
>  arch/arm/Makefile | 2 --
>  2 files changed, 1 insertion(+), 4 deletions(-)

Applied, thanks

Sascha

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