Re: [Xen-devel] [Qemu-devel] [PATCH v2] qemu/configure: fix CFLAGS handling for i386

[Andreas FÃrber <afaerber@xxxxxxx>]

Am 04.04.2012 18:09, schrieb Peter Maydell:
> On 4 April 2012 16:40, Peter Maydell <peter.maydell@xxxxxxxxxx> wrote:
>> Having looked at configure I'm pretty sure what we want here is
>>  QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
>>
>> because we're only doing this for the benefit of a particular bit
>> of code in hw/vhost.c and so QEMU_CFLAGS is sufficient. Also this
>> brings it into line with other places where we add a -march flag,
>> which use QEMU_CFLAGS, not CFLAGS.
> 
> ...and having dug around in the git history we find that QEMU_CFLAGS
> were introduced in commit a558ee1, whose commit message defines the
> difference like this:
>     QEMU_CFLAGS: flags without which we can't compile
>     CFLAGS: "-g -O2"
> 
> "-march=i486" is clearly "flags without which we can't compile",
> so we should be setting it in QEMU_CFLAGS, not CFLAGS.
> 
> Olaf, if you want to submit a fixed patch I think we should apply
> it to upstream qemu.
> 
> PS: remarks like
> "This patch is against the qemu-xen tree, but it should apply also to
> qemu.git since it has the same issue. Please apply to both trees."
> 
> should go below the '---' in a patch email so they don't appear
> in the git commit message when the patch is applied.

And you also forgot to update the subject to something like:
"configure: Fix CFLAGS handling for i386" - this is for the QEMU
repository after all, so no need to put that into the commit message.

Andreas

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