Re: {PATCH] fix __packed in exported kernel headers

[Mike Frysinger]

On Thu, Jun 30, 2011 at 15:01, H. Peter Anvin wrote:
> On 06/30/2011 11:58 AM, Mike Frysinger wrote:
>> On Thu, Jun 30, 2011 at 14:52, H. Peter Anvin wrote:
>>> On 06/30/2011 11:48 AM, Mike Frysinger wrote:
>>>> without fallback logic (#ifndef xxx...#define xxx...#endif), i think
>>>> that's throwing an unreasonable amount of requirements onto userspace
>>>> consumers
>>>
>>> Unclear. ÂToo much "smarts" in kernel headers is a constant headache to
>>> userspace consumers.
>>
>> not even being able to include a header without hitting a build
>> failure without first declaring some magic defines (which,
>> realistically, the vast majority of people will be doing exactly the
>> same as they'll be using gcc) is unreasonable. Âhence my suggestion
>> about compiler.h.
>
> Not unless the kernel uses its own namespace for these defines. ÂThe
> thing is, most libraries have their own macro library for this, and
> collisions are both likely and bad.

while that's true for exporting compiler.h, namespacing is irrelevant
to my requirement -- the headers should have sane/usable defaults.
-mike
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