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powerpc: Only build prom_init.o when CONFIG_PPC_OF_BOOT_TRAMPOLINE=y 

Commit 28794d34 ("powerpc/kconfig: Kill PPC_MULTIPLATFORM"), added
CONFIG_PPC_OF_BOOT_TRAMPOLINE to control the buliding of prom_init.o

However the Makefile still unconditionally builds prom_init_check,
the script that checks prom_init.o for symbol usage, and so in turn
prom_init.o is still always being built. (it's not linked though)

So surround all the prom_init_check logic with an ifeq block testing
if CONFIG_PPC_OF_BOOT_TRAMPOLINE is set.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2009-06-11 02:12:28 +00:00 committed by Benjamin Herrenschmidt
parent 3240776ce2
commit 7719ed7ce8
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/kernel/Makefile
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@ -125,6 +125,7 @@ PHONY += systbl_chk
systbl_chk: $(src)/systbl_chk.sh $(obj)/systbl_chk.i
$(call cmd,systbl_chk)
ifeq ($(CONFIG_PPC_OF_BOOT_TRAMPOLINE),y)
$(obj)/built-in.o: prom_init_check
quiet_cmd_prom_init_check = CALL $<
@ -133,5 +134,6 @@ quiet_cmd_prom_init_check = CALL $<
PHONY += prom_init_check
prom_init_check: $(src)/prom_init_check.sh $(obj)/prom_init.o
$(call cmd,prom_init_check)
endif
clean-files := vmlinux.lds