On Mon, Sep 22, 2014 at 10:43:27AM +0200, Ludovic Courtès wrote:
> What libc version is this?

The package is glibc-2.12-1.107.el6_4.5.x86_64.

> It would have been great, if this is still possible, to post lib/poll.h.
> Normally that file uses #include_next to get libc’s <poll.h>, but maybe
> that mechanism somehow fails with old GCC versions.

I just retried the compilation, and poll.h is attached. It contains
#if 1
# include_next <poll.h>
#endif

There is a /usr/include/poll.h, which contains the one line
#include <sys/poll.h>
This in turn does an
#include <bits/poll.h>
which has a line
#define POLLIN          0x001           /* There is data to read.  */

I tried to replace the # include_next in lib/poll.h by a simple #include,
but that leads to
../lib/poll.h:31:18: error: #include nested too deeply

Andreas