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Re: [Xen-devel] [PATCH 2/3] xen: move -nostdinc into common Rules.mk.



On Thu, 2013-08-15 at 14:25 +0100, Tim Deegan wrote:
> Previously we didn't use it at all the on ARM ports or for clang builds.
> 
> For ARM, I think this is just an oversight.

Yes.

> 
> For clang, this used not to work, because '-withprefix include' didn't
> let us see stdarg.h, but that's fixed in clang v3.0.
> 
> Also move the '-withprefix include' to beside -nostdinc as it's only
> needed with -nostdinc anyway.
> 
> Signed-off-by: Tim Deegan <tim@xxxxxxx>

Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

> ---
>  xen/Rules.mk          |    6 +++++-
>  xen/arch/x86/Rules.mk |    6 ------
>  2 files changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/xen/Rules.mk b/xen/Rules.mk
> index c432ad6..bbfc1ac 100644
> --- a/xen/Rules.mk
> +++ b/xen/Rules.mk
> @@ -44,8 +44,12 @@ ALL_OBJS-$(x86)          += $(BASEDIR)/crypto/built_in.o
>  CFLAGS-y                += -fno-builtin -fno-common
>  CFLAGS-y                += -Werror -Wredundant-decls -Wno-pointer-arith
>  CFLAGS-y                += -pipe
> -CFLAGS-y                += -iwithprefix include
>  CFLAGS-y                += -g -D__XEN__ -include 
> $(BASEDIR)/include/xen/config.h
> +# Solaris puts stdarg.h &c in the system include directory.
> +ifneq ($(XEN_OS),SunOS)
> +CFLAGS-y                += -nostdinc -iwithprefix include
> +endif
> +
>  CFLAGS-$(XSM_ENABLE)    += -DXSM_ENABLE
>  CFLAGS-$(FLASK_ENABLE)  += -DFLASK_ENABLE -DXSM_MAGIC=0xf97cff8c
>  CFLAGS-$(FLASK_ENABLE)  += -DFLASK_DEVELOP -DFLASK_BOOTPARAM 
> -DFLASK_AVC_STATS
> diff --git a/xen/arch/x86/Rules.mk b/xen/arch/x86/Rules.mk
> index f629dff..04c1a90 100644
> --- a/xen/arch/x86/Rules.mk
> +++ b/xen/arch/x86/Rules.mk
> @@ -19,12 +19,6 @@ xenoprof := y
>  #
>  supervisor_mode_kernel ?= n
>  
> -# Solaris grabs stdarg.h and friends from the system include directory.
> -# Clang likewise.
> -ifneq ($(XEN_OS),SunOS)
> -CFLAGS-$(gcc) += -nostdinc
> -endif
> -
>  CFLAGS += -I$(BASEDIR)/include 
>  CFLAGS += -I$(BASEDIR)/include/asm-x86/mach-generic
>  CFLAGS += -I$(BASEDIR)/include/asm-x86/mach-default



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