Re: HAVE_RELIABLE_FIONREAD & ioctl

[Bruno Haible]

Hi Sam,

> I pulled ioctl module from gnulib because of a compilation error about
> "ioctl_used_without_requesting_gnulib_ioctl" and I am wondering whether
> the HAVE_RELIABLE_FIONREAD et al are still relevant.

The problem that clisp/src/m4/ioctl.m4 tests against is fixed in Solaris 7
and newer, but is present in Solaris 2.6, FreeBSD 6.4, IRIX 6.5.

> Also, I get this error on linux:
> 
> /home/sds/src/clisp/sf/clisp/build-g-gxx/gllib/sys/ioctl.h:361: error: 
> declaration of C function 'int ioctl(int, int, ...)' conflicts with
> /usr/include/sys/ioctl.h:42: error: previous declaration 'int ioctl(int, long 
> unsigned int, ...)' here
> make: *** [spvw.o] Error 1
> 
> (after I removed the ioctl declaration from unix.h)
> what's wrong?

In this situation (on Linux, which has the non-POSIX declaration for ioctl())
REPLACE_IOCTL should be set to 1 by config.status, so that gllib/sys/ioctl.h
provides a declaration for rpl_ioctl, not ioctl. Somehow this is not happening.
Can you look in config.status what is the value of REPLACE_IOCTL? And if it is
0, look up in config.log the details of "checking for ioctl with POSIX 
signature ..."

Bruno
-- 
In memoriam Pancho Villa <http://en.wikipedia.org/wiki/Pancho_Villa>