Messages in this thread | | | Date | Wed, 25 Jun 2003 19:15:32 +0100 | From | Christoph Hellwig <> | Subject | Re: DVB Include files |
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On Wed, Jun 25, 2003 at 08:09:51PM +0200, Marcus Metzler wrote: > > If the structures change incompatibly you're fucked anyway. Better > > Not necessarily, e.g. changing > > #define AUDIO_SET_ATTRIBUTES _IOW('o', 17, audio_attributes_t) > #define AUDIO_SET_KARAOKE _IOW('o', 18, audio_karaoke_t) > > to > > #define AUDIO_SET_ATTRIBUTES _IOW('o', 47, audio_attributes_t) > #define AUDIO_SET_KARAOKE _IOW('o', 48, audio_karaoke_t) > > or
In that case yes, you are screwed. Your ABI just changed incompatibly.
> Anyway, even in user/include it should be under linux/dvb because > that's just what it is Linux DVB. So the app has to include > <linux/dvb/xxx.h>.
No! <linux/*.h> is the namesapce for kernelheaders. Currently they're still in the the user includes, too (due to legacy reasons). The DVD API must move to a directory outside <linux/dvb>.
If you userland packages add headers to /usr/include/linux/ they are totally bogus.
> I don't care what distributions do. When I get a new kernel (no > packages), I use the includes from that kernel and compile my apps > with that.
And that's wrong. You must always compile against the kernel headers that your libc was compiled against.
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