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Subject[PATCH 3/6] ARC: build: add boot_targets to PHONY
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The top-level boot_targets (uImage and uImage.*) should be phony
targets. They just let Kbuild descend into arch/arc/boot/ and create
files there.

If a file exists in the top directory with the same name, the boot
image will not be created.

You can confirm it by the following steps:

$ export CROSS_COMPILE=<your-arc-compiler-prefix>
$ make -s ARCH=arc defconfig all # vmlinux will be built
$ touch uImage.gz
$ make ARCH=arc uImage.gz
CALL scripts/atomic/check-atomics.sh
CALL scripts/checksyscalls.sh
CHK include/generated/compile.h
# arch/arc/boot/uImage.gz is not created

Specify the targets as PHONY to fix this.

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

arch/arc/Makefile | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index 61a41123ad4c..cf9da9aea12a 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -104,6 +104,7 @@ boot := arch/arc/boot

boot_targets := uImage uImage.bin uImage.gz uImage.lzma

+PHONY += $(boot_targets)
$(boot_targets): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

--
2.25.1
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