Re: 23.0.50; Undefined symbol: _res_9_init

[Peter Dyballa <Peter_Dyballa@Freenet.DE>]

Am 19.10.2007 um 17:38 schrieb Peter Dyballa:

> 	/sw/lib/odcctools/bin/ld: Undefined symbols:
> 	_res_9_init

Compiling src/process.c with -E -dD I get in the output:

	#define HAVE_GETADDRINFO 1
	...
	#define HAVE_RES_INIT 1
	...
	#define res_init res_9_init	/* from resolv.h */
	...
	int res_9_init (void);		/* from resolv.h */
	...
	      res_9_init ();	/* line #3094 src/process.c in  
"make_network_process" */
			/* could also happen on line #3144 when HAVE_GETADDRINFO is 0 */

Nm tells about libc:

	/usr/lib/libc.dylib(res_init.o):
	9004561c T _res_init

so it's obviously a mistake to re-define res_init as res_9_init. This  
re-definition happens in resolv.h in:

	#ifndef __BIND_NOSTATIC
	...
	#define res_init			res_9_init
	...
	__BEGIN_DECLS
	...
	int		res_init __P((void));
	...
	__END_DECLS
	#endif

In the Fink project for compilation of netcat 0.6.1 CFLAGS is set to

	-D__BIND_NOSTATIC

Re-configuring with this among the CPPFLAGS used allows to create  
temacs. /usr/include/resolv.h is the only file that uses  
__BIND_NOSTATIC, src/process.c is the only file that includes  
resolv.h (found by compiling with -H), so on (some ?) Mac OS X src/ 
process.c should be compiled with an extra CPPFLAG or CFLAG - 
D__BIND_NOSTATIC when HAVE_RES_INIT is 1.

--
Greetings

   Pete

The future will be much better tomorrow.
                                -- George W. Bush