linux-kernel - [PATCH] xtensa: add boot subdirectories build artifacts to 'targets'

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Message-Id: <20200722004707.779601-1-masahiroy@kernel.org>
Date:   Wed, 22 Jul 2020 09:47:07 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Chris Zankel <chris@...kel.net>, Max Filippov <jcmvbkbc@...il.com>,
        linux-xtensa@...ux-xtensa.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] xtensa: add boot subdirectories build artifacts to 'targets'

Xtensa always rebuilds the following even if nothing in the source code
has been changed. Passing V=2 shows the reason.

  AS      arch/xtensa/boot/boot-elf/bootstrap.o - due to bootstrap.o not in $(targets)
  LDS     arch/xtensa/boot/boot-elf/boot.lds - due to boot.lds not in $(targets)

They are built by if_changed(_dep). Add them to 'targets' so .*.cmd files
are included.

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

 arch/xtensa/boot/boot-elf/Makefile     | 1 +
 arch/xtensa/boot/boot-redboot/Makefile | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/xtensa/boot/boot-elf/Makefile b/arch/xtensa/boot/boot-elf/Makefile
index 12ae1e91cb75..badee63dae27 100644
--- a/arch/xtensa/boot/boot-elf/Makefile
+++ b/arch/xtensa/boot/boot-elf/Makefile
@@ -15,6 +15,7 @@ export CPPFLAGS_boot.lds += -P -C
 export KBUILD_AFLAGS += -mtext-section-literals
 
 boot-y		:= bootstrap.o
+targets		+= $(boot-y) boot.lds
 
 OBJS		:= $(addprefix $(obj)/,$(boot-y))
 
diff --git a/arch/xtensa/boot/boot-redboot/Makefile b/arch/xtensa/boot/boot-redboot/Makefile
index 8632473ad319..1a277dd57b2a 100644
--- a/arch/xtensa/boot/boot-redboot/Makefile
+++ b/arch/xtensa/boot/boot-redboot/Makefile
@@ -13,6 +13,7 @@ endif
 LD_ARGS	= -T $(srctree)/$(obj)/boot.ld
 
 boot-y	:= bootstrap.o
+targets	+= $(boot-y)
 
 OBJS	:= $(addprefix $(obj)/,$(boot-y))
 LIBS	:= arch/xtensa/boot/lib/lib.a arch/xtensa/lib/lib.a
-- 
2.25.1