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cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected

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If CONFIG_ETRAX_AXISFLASHMAP is not configured, the flash rescue image
object file is empty. With recent versions of binutils, this results
in the following build error.

cris-linux-objcopy: error:
	the input file 'arch/cris/boot/rescue/rescue.o' has no sections

This is seen, for example, when trying to build cris:allnoconfig
with recently generated toolchains.

Since it does not make sense to build a flash rescue image if there is
no flash, only build it if CONFIG_ETRAX_AXISFLASHMAP is enabled.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 66ab3a74c5 ("CRIS: Merge machine dependent boot/compressed ..")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
This commit is contained in:
Guenter Roeck 2016-10-30 09:09:18 -07:00 committed by Jesper Nilsson
parent bc33b0ca11
commit 328cf6927b
1 changed files with 8 additions and 0 deletions
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8
arch/cris/boot/rescue/Makefile
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@ -10,6 +10,9 @@
asflags-y += $(LINUXINCLUDE)
ccflags-y += -O2 $(LINUXINCLUDE)
ifdef CONFIG_ETRAX_AXISFLASHMAP
arch-$(CONFIG_ETRAX_ARCH_V10) = v10
arch-$(CONFIG_ETRAX_ARCH_V32) = v32
@ -28,6 +31,11 @@ $(obj)/rescue.bin: $(obj)/rescue.o FORCE
$(call if_changed,objcopy)
cp -p $(obj)/rescue.bin $(objtree)
else
$(obj)/rescue.bin:
endif
$(obj)/testrescue.bin: $(obj)/testrescue.o
$(OBJCOPY) $(OBJCOPYFLAGS) $(obj)/testrescue.o tr.bin
# Pad it to 784 bytes