/usr/bin/ld: errno: TLS definition in /lib/libc.so.6

hello.
Getting this error when compile my program. I assume that perhaps can be library problem. can any one tell me right answer.........

Problem is...........

/usr/bin/ld: errno: TLS definition in /lib/libc.so.6 section .tbss mismatches non-TLS reference in /tmp/ccUV4UJJ.o
/lib/libc.so.6: could not read symbols: Bad value
collect2: ld returned 1 exit status

and all the header file......

Code:

#include <netdb.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <syslog.h>
#include <sys/ioctl.h>
#ifdef __GLIBC__
#include <net/if.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#else
#include <stdlib.h> /* some of these were included in the original */
#include <unistd.h> /* but not really needed */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#endif

extern int errno;

#ifndef NOFILE
#define NOFILE 1024
#endif

Simple answer:
Just include <errno.h> in your source, and remove the extern int errno;

More detailed answer:
errno is not always a single int - in this case, the linker is telling you that there is a TLS (Thread local storage) version of errno - so errno is something like this:

pseudo linux-code

Code:

#define errno() *errnofunc()

int *errnofunc() 
{
    int *errnoptr = get_thread_data(ERRNOPTR);
    return errnoptr;
}

--
Mats


--
Mats

Well, on old programs, one often meets
symbol errno, version GLIBC_2.0 not defined in file libc.so.6 with link time reference
error, so I made a little library with

Code:

extern int (* __errno_location);
int errno()
{
  return(*__errno_location);
    }

and preload this library with LD_PRELOAD. This always me to use olds programs like Maple 5 or 7 on recent linux (Debian Etch for instance). But since libc 2.7 there is errors if I try to recompile this library, looking what gcc -E gives to #include <errno.h> and i=errno(); I change this program to

Code:

extern int *__errno_location (void) __attribute__ ((__nothrow__)) __attribute__ ((__const__));
int errno ()
{
  return((*__errno_location ()));
    }

good compilation but

Code:

$ gcc -shared -Wl,-soname,lib-errno -o lib-errno.so lib-errno.o

give
errno: TLS definition in /lib/libc.so.6 section .tbss mismatches non-TLS definition in lib-errno.o section .tex
I try to find your pseudo code or something like in the includes files but I fails. Do you have a suggestion?

Sorry if you think I stool the thread, but I thought it's the same subject.

Really sorry for my English, I'm French and try to write good English but... see the result

We have a rule about waking old (dead) threads. A moderator may want to split this off into a new thread.

Further, I'm not sure what the actual QUESTION is that you want answered - or are you just stating something?

--
Mats

Sorry, I make a new thread and make my question more «precise»...