Bug#225300: libc6-dev: sys/poll.h do not define POLLRDNORM
On Wed, Dec 31, 2003 at 01:16:06AM +0100, Simone Piccardi wrote:
> On Tue, 2003-12-30 at 04:23, Colin Watson wrote:
> > This definitely implies to me that you need to define _XOPEN_SOURCE
> > (__USE_XOPEN may have the same effect but it's supposed to be set by
> > <features.h>, not the user) in order to get this constant. See 'info
> > libc "Feature Test Macros"' for information on this kind of thing.
>
> Sorry, I was not clear. I defined _XOPEN_SOURCE. But still not working.
> I'll find the program that do not work in the attachment, and those are
> the errors:
> gcc -L./ -lgapil -Wall -g -fPIC poll_echod.c -o pechod
> poll_echod.c: In function `main':
> poll_echod.c:167: error: `POLLRDNORM' undeclared (first use in this
> function)
> poll_echod.c:167: error: (Each undeclared identifier is reported only
> once
> poll_echod.c:167: error: for each function it appears in.)
You must #define _XOPEN_SOURCE before anything that #includes
<features.h>. Since that covers practically all system headers, it's
best to put the #define before any #include lines.
When I make this modification to your test case, the error about
POLLRDNORM disappears.
Cheers,
--
Colin Watson [cjwatson@flatline.org.uk]
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