Re: [PATCH] kvm: fix unifdef problem

[Sheng Yang <sheng@linux.intel.com>]

On Tuesday 21 October 2008 15:31:04 Sheng Yang wrote:
> Reminder by Avi, unifdef need a -U parameter to deal undefined macro, other
> wise it can't deal with #if defined() || defined().
>
> Also fix a historic bug on never execute unifdef...
>
> Also discard "set -e" before unifdef, because unifdef would return 1 if it
> have done something to the file.

Hi, Christian

Can you help to check if it's affect powerpc side?

Thanks!
--
regards
Yang, Sheng
>
> Signed-off-by: Sheng Yang <sheng@linux.intel.com>
> ---
>  kernel/Makefile |   10 ++++++----
>  1 files changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/kernel/Makefile b/kernel/Makefile
> index ef18fa6..fed3bd4 100644
> --- a/kernel/Makefile
> +++ b/kernel/Makefile
> @@ -3,6 +3,8 @@ include config.kbuild
>
>  ARCH_DIR = $(if $(filter $(ARCH),x86_64 i386),x86,$(ARCH))
>  ARCH_CONFIG := $(shell echo $(ARCH_DIR) | tr '[:lower:]' '[:upper:]')
> +# NONARCH_CONFIG used for unifdef, and only cover X86 and IA64 now
> +NONARCH_CONFIG = $(filter-out $(ARCH_CONFIG),X86 IA64)
>
>  KVERREL = $(patsubst /lib/modules/%/build,%,$(KERNELDIR))
>
> @@ -24,8 +26,8 @@ _hack = mv $1 $1.orig && \
>
>  	    | sed '/\#include/! s/\blapic\b/l_apic/g' > $1 && rm $1.orig
>
>  unifdef = mv $1 $1.orig && \
> -	  unifdef -DCONFIG_$(ARCH_CONFIG) $1.orig > $1; \
> -          [ $$? -le 1 ] && rm $1.orig
> +	  unifdef -DCONFIG_$(ARCH_CONFIG) -UCONFIG_$(NONARCH_CONFIG) $1.orig >
> $1; \ +          [ $$? -le 2 ] && rm $1.orig
>
>  hack = $(call _hack,$T/$(strip $1))
>
> @@ -67,7 +69,7 @@ header-sync:
>  	     "$(LINUX)"/arch/$(ARCH_DIR)/include/asm/./kvm*.h \
>               $T/include/asm-$(ARCH_DIR)/
>
> -	set -e && for i in $(find $T -name '*.h'); do \
> +	for i in $$(find $T -name '*.h'); do \
>  		$(call unifdef,$$i); done
>  	$(call hack, include/linux/kvm.h)
>  	set -e && for i in $$(find $T -type f -printf '%P '); \
> @@ -81,7 +83,7 @@ source-sync:
>  	     "$(LINUX)"/virt/kvm/./*.[cSh] \
>  	     $T/
>
> -	set -e && for i in $(find $T -name '*.c'); do \
> +	for i in $$(find $T -name '*.c'); do \
>  		$(call unifdef,$$i); done
>
>  	for i in $(hack-files); \