hi philip,
> That was an aside rather than a reason. The reason is that your system
> warns if a symbol in a program re-defines one in a library.
fair enuf.
>> cc dns.c
>> dns.c: In function 'dns_next_rr':
>> dns.c:171: error: 'HEADER' undeclared (first use in this function)
>
> HEADER is defined as a structure in /usr/include/arpa/nameser_compat.h
> on my box. This is included automatically from
> /usr/include/arpa/nameser.h. I cannot think of any way of fudging round
> this one.
in BOTH my /usr/include/arpa/nameser_compat.h &
/usr/include/arpa/nameser8_compat.h, there is, indeed, a HEADER struct def,
e.g.:
typedef struct {
unsigned id :16; /* query identification number */
#if BYTE_ORDER == BIG_ENDIAN
/* fields in third byte */
unsigned qr: 1; /* response flag */
...
unsigned arcount :16; /* number of resource entries */
} HEADER;
checking, my /usr/include/arpa/nameser.h exists (as a link back to
../nameser.h):
% ls -al /usr/include/arpa/nameser.h
lrwxr-xr-x 1 root wheel 12 Jun 6 15:44 nameser.h -> ../nameser.h
in it, i find:
...
#ifndef _NAMESER_9_H_
#define _NAMESER_9_H_
#ifdef BIND_8_COMPAT
#include <arpa/nameser8_compat.h>
#else
#include <sys/param.h>
#if (!defined(BSD)) || (BSD < 199306)
...
which should clearly be pulling in the HEADER struct from nameser8_compat.h
when BIND_8_COMPAT is defined.
revisiting; per Changelog ...
Exim version 4.30
-----------------
...
27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
...
and verifying that it IS defined:
% grep BIND_8_COMPAT `grep -rln BIND_8_COMPAT .`
./build-Darwin-powerpc/Makefile:CFLAGS=-O -no-cpp-precomp
-DBIND_8_COMPAT
./doc/ChangeLog:27. Added -DBIND_8_COMPAT to the CLFAGS setting for
Darwin.
./OS/Makefile-Darwin:CFLAGS=-O -no-cpp-precomp -DBIND_8_COMPAT
>> dns.c:442: error: 'C_IN' undeclared (first use in this function)
>> dns.c: In function 'dns_special_lookup':
>> dns.c:754: error: 'HEADER' undeclared (first use in this function)
>> dns.c:754: error: 'h' undeclared (first use in this function)
>> dns.c:754: error: parse error before ')' token
>> dns.c:755: error: 'QUERY' undeclared (first use in this function)
>> dns.c:756: error: 'NOERROR' undeclared (first use in this function)
>> dns.c:756: error: 'NXDOMAIN' undeclared (first use in this function)
>> dns.c:764: error: 'T_SOA' undeclared (first use in this function)
>
> T_SOA was one I overlooked when I added the other T_xx thing defaults.
>
> But as I can't do the structure, you will have to find out whether there
> are any definitions of these things on your box. It is indeed the BIND 8
> compatibility issue. If there is a file that defines them, we might be
> able to sort this out.
let's see:
ls -al ./build-Darwin-powerpc/dns.c
lrwxr-xr-x 1 root wheel 12 Jun 28 10:22 ./build-Darwin-powerpc/dns.c
-> ../src/dns.c
% grep "nameser.h" ./src/dns.c
(empty)
% grep "include " ./src/dns.c
#include "exim.h"
there's only one include of exim.h, where:
% grep "nameser.h" ./src/exim.h
#include <arpa/nameser.h>
arpa/nameser.h *is* included, afaik, outside of any conditional ...
so, i'm confused ... with BIND_8_COMPAT *defined*, why are we NOT seeing the
HEADER struct def?
trying some bruteforce tests ...
EDITing dns.c
#include "exim.h"
+++ #include "/usr//include/arpa/nameser_compat.h"
NOW, 'make' *continues* thru the 'missing' HEADER def, ad eventually fails w/:
...
cc dns.c
In file included from dns.c:13:
/usr/include/arpa/nameser_compat.h:141:1: warning: "T_A" redefined
In file included from dns.c:12:
exim.h:287:1: warning: this is the location of the previous definition
In file included from dns.c:13:
/usr/include/arpa/nameser_compat.h:142:1: warning: "T_NS" redefined
In file included from dns.c:12:
exim.h:299:1: warning: this is the location of the previous definition
In file included from dns.c:13:
/usr/include/arpa/nameser_compat.h:145:1: warning: "T_CNAME" redefined
In file included from dns.c:12:
exim.h:291:1: warning: this is the location of the previous definition
In file included from dns.c:13:
/usr/include/arpa/nameser_compat.h:152:1: warning: "T_PTR" redefined
In file included from dns.c:12:
exim.h:303:1: warning: this is the location of the previous definition
In file included from dns.c:13:
/usr/include/arpa/nameser_compat.h:155:1: warning: "T_MX" redefined
In file included from dns.c:12:
exim.h:295:1: warning: this is the location of the previous definition
In file included from dns.c:13:
/usr/include/arpa/nameser_compat.h:156:1: warning: "T_TXT" redefined
In file included from dns.c:12:
exim.h:275:1: warning: this is the location of the previous definition
In file included from dns.c:13:
/usr/include/arpa/nameser_compat.h:168:1: warning: "T_AAAA" redefined
In file included from dns.c:12:
exim.h:264:1: warning: this is the location of the previous definition
In file included from dns.c:13:
/usr/include/arpa/nameser_compat.h:173:1: warning: "T_SRV" redefined
In file included from dns.c:12:
exim.h:279:1: warning: this is the location of the previous definition
cc drtables.c
cc enq.c
cc exim.c
...
srs.c:153: warning: pointer targets in passing argument 2 of 'srs_reverse'
differ in signedness
srs.c:164: warning: pointer targets in passing argument 1 of 'string_copy'
differ in signedness
...
cc dk.c
awk '{ print ($1+1) }' cnumber.h > cnumber.temp
rm -f cnumber.h; mv cnumber.temp cnumber.h
cc version.c
rm -f exim
cc -o exim
/usr/bin/ld: Undefined symbols:
_GETSHORT
_res_9_dn_expand
_res_9_init
_res_9_search
_strnlen
collect2: ld returned 1 exit status
make[1]: *** [exim] Error 1
make: *** [go] Error 2
richard
