Problemas compilando el authsrv del TIS firewall toolkit

[Han Solo <hsolo@maptel.es>]

Hola a todos/as

Me he bajado el juego de herramientas TIS para montar un cortafuegos, y
todo ha ido bien, salvo la parte del authsrv. Compilar se compila todo
sin problemas, pero a la hora de compilar el authsrv da el siguiente
mensaje:

#make clean && make
rm -f ../libauth.a *.o authmgr authsrv authdump authload snkkey
gcc -I.. -g -DLINUX  -c cliio.c
ar rcv ../libauth.a cliio.o
a - cliio.o
ranlib ../libauth.a
gcc -I.. -g -DLINUX   -c authmgr.c -o authmgr.o
gcc -g -static -o authmgr authmgr.o ../libauth.a ../libfwall.a  
gcc -I.. -g -DLINUX   -c authsrv.c -o authsrv.o
gcc -I.. -g -DLINUX   -c proto.c
gcc -I.. -g -DLINUX   -c db.c -o db.o
gcc -I.. -g -DLINUX   -c pass.c -o pass.o
gcc -I.. -g -DLINUX  -c srvio.c
gcc -g -static -o authsrv authsrv.o proto.o db.o pass.o srvio.o    
../libauth.a ../libfwall.a    -ldb 
pass.o: In function `passverify':
/home/carlosv/ftp.tislabs.com/pub/firewalls/toolkit/dist/fwtk-9ab166/fwtk/auth/pass.c:39:
undefined reference to `crypt'
pass.o: In function `passset':
/home/carlosv/ftp.tislabs.com/pub/firewalls/toolkit/dist/fwtk-9ab166/fwtk/auth/pass.c:70:
undefined reference to `crypt'
collect2: ld returned 1 exit status
make: *** [authsrv] Error 1
 

...y  aquí se queda

Os mando el código, a ver si se os ocurre algo. He revisado los
makefiles, y está todo en orden.

/*-
 * Copyright (c) 1993, Trusted Information Systems, Incorporated
 * All rights reserved.
 *
 * Redistribution and use are governed by the terms detailed in the
 * license document ("LICENSE") included with the toolkit.
 */


/*
 *      Author: Marcus J. Ranum, Trusted Information Systems, Inc.
 */
static  char    RcsId[] = "$Header:
/usr/home/rick/fwtk2.0/fwtk/auth/RCS/pass.c
#include        <time.h>
#include        "firewall.h"
#include        "auth.h"

#ifdef  AUTHPROTO_PASSWORD

extern  char    *crypt();

passverify(user,pass,ap,rbuf)
char    *user;
char    *pass;
Auth    *ap;
char    *rbuf;
{
        char    lclpass[10];

        if(ap->pw[0] == '\0') {
                strcpy(rbuf,"ok");
                return(0);
        }

        if(pass == (char *)0)
                goto reject;
        strncpy(lclpass, pass, 8);
        lclpass[8] = '\0';

        if(!strcmp(crypt(lclpass,ap->pw),ap->pw)) {
                strcpy(rbuf,"ok");
                return(0);
        }
reject:   
        strcpy(rbuf,"Permission Denied.");
        return(1);
}



static unsigned char itoa64[] =         /* 0 ... 63 => ascii - 64 */
       
"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

passset(user,pass,ap,rbuf)
char    *user;
char    *pass;
Auth    *ap;
char    *rbuf;
{
        if(pass == (char *)0)
                ap->pw[0] = '\0';
        else {
                time_t  t;
                char    salt[2];

                time(&t);
                salt[0] = itoa64[getpid() & 0x3f];
                salt[1] = itoa64[(int)t & 0x3f];
                if(strlen(pass) > 7)
                        pass[8] = '\0';
                strncpy(ap->pw,crypt(pass,salt),AUTH_PWSIZ);
        }
        if(auth_dbputu(user,ap) == 0)
                sprintf(rbuf,"Password for %s changed.",user);
        else
                strcpy(rbuf,"Database error.");
        return(0);
}
#endif

Un saludo a todos
P.D. A los de la lista debian una disculpa; esto es un poco offtopic,
pero es que ando muy desdesperado