Re: Re: Add support for <xti.h>

Tom Lane writes:
> >> Actually, given your description of the problem, I'm half
> >> inclined to revert the whole patch and instead make configure's
> >> test for availability of <netinet/tcp.h> first include
> >> <netinet/in.h>, so that that configure test will succeed on IRIX
> >> etc.
>
> Pete,
> After looking at this I'm confused again. The configure test
> consists of seeing whether cpp will process
>
> #include <netinet/tcp.h>
>
> without complaint. I can well believe that the full C compilation
> process will generate errors if <netinet/tcp.h> is included without
> also including <netinet/in.h>, but it's a little harder to believe
> that cpp alone will complain. Could you double-check this?
>
> It would be useful to look at the config.log file generated by the
> configure run that's reporting tcp.h isn't found. It should
> contain the error messages generated by failed tests.

On IRIX 6.5.5m I get the following error. The header <standards.h> is
included by (nearly!) all of the standard headers. It is the IRIX
equivalent of config.h if you will.

In order to preprocess this test on IRIX a system header such as
<stdio.h> must precede <netinet/tcp.h>. The logical choice of header
to use is <netinet/in.h> as tcp.h is supplying values for levels
defined in in.h.

This is an IRIX bug but I think that we need to work around it.

configure:4349: checking for netinet/tcp.h
configure:4359: cc -E conftest.c >/dev/null 2>conftest.out
cc-1035 cc: WARNING File = /usr/include/sys/endian.h, Line = 32
#error directive: "<standards.h> must be included before <sys/endian.h>."

#error "<standards.h> must be included before <sys/endian.h>."
^
configure: failed program was:
#line 4354 "configure"
#include "confdefs.h"
#include <netinet/tcp.h>

--
Pete Forman -./\.- Disclaimer: This post is originated
Western Geophysical -./\.- by myself and does not represent
pete(dot)forman(at)westgeo(dot)com -./\.- the opinion of Baker Hughes or
http://www.crosswinds.net/~petef -./\.- its divisions.