Re: [Xen-devel] Build problems with xen 4.7

[George Dunlap <dunlapg@xxxxxxxxx>]

On Fri, May 13, 2016 at 4:23 PM, Konrad Rzeszutek Wilk
<konrad.wilk@xxxxxxxxxx> wrote:
> --- xen-4.7.0/config/StdGNU.mk.orig     2016-04-15 22:56:52.191227591 +0100
> +++ xen-4.7.0/config/StdGNU.mk  2016-04-15 23:01:40.978829756 +0100
> @@ -37,6 +37,12 @@
>
>  ifneq ($(debug),y)
>  CFLAGS += -O2 -fomit-frame-pointer -fno-tree-coalesce-vars
> +ifeq ($(XEN_TARGET_ARCH),x86_64)
> +#might be cross-compiling so strip out possible x86_32 options
> +CFLAGS += $(shell echo $(CFLAGS_EXTRA) | sed -e 's/-m32//g' -e 
> 's/-march=i686//g' -e 's/-mtune=atom//g')
> +else
> +CFLAGS += $(CFLAGS_EXTRA)
> +endif

Why the if?  Under what circumstances is it actually appropriate to
pass in those kinds of flags to the Xen build system?

 -George

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