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sh: fix build error for empty CONFIG_BUILTIN_DTB_SOURCE

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If CONFIG_USE_BUILTIN_DTB is enabled, but CONFIG_BUILTIN_DTB_SOURCE
is empty (for example, allmodconfig), it fails to build, like this:

  make[2]: *** No rule to make target 'arch/sh/boot/dts/.dtb.o',
  needed by 'arch/sh/boot/dts/built-in.o'.  Stop.

Surround obj-y with ifneq ... endif.

I replaced $(CONFIG_USE_BUILTIN_DTB) with 'y' since this is always
the case from the following code from arch/sh/Makefile:

  core-$(CONFIG_USE_BUILTIN_DTB)  += arch/sh/boot/dts/

Signed-off-by: Masahiro Yamada <[email protected]>
This commit is contained in:
Masahiro Yamada committed 2018-03-02 09:20:55 +09:00
1 parent f4bc1eefc1
commit 1b1e4ee86e
1 file changed
+3 -1
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arch/sh/boot/dts/Makefile
+3 -1
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@@ -1 +1,3 @@
obj-$(CONFIG_USE_BUILTIN_DTB) += $(patsubst "%",%,$(CONFIG_BUILTIN_DTB_SOURCE)).dtb.o
ifneq ($(CONFIG_BUILTIN_DTB_SOURCE),"")
obj-y += $(patsubst "%",%,$(CONFIG_BUILTIN_DTB_SOURCE)).dtb.o
endif