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求助! apue的例子无法在linux编译 -- 错误: undefined reference to ...
来源: 互联网 发布时间:2015-02-27
本文导语: 各位前辈,小弟正在学习linux下的编程,阅读到apue中的章节,其中第一个程序就无法正常编译,百思不得其解,敬请各位高手点拨!谢谢! 错误描述: /tmp/cc2qM4Lf.o(.text+0x1f): undefined reference to `err_quit' /tmp/cc2qM4Lf.o(.te...
各位前辈,小弟正在学习linux下的编程,阅读到apue中的章节,其中第一个程序就无法正常编译,百思不得其解,敬请各位高手点拨!谢谢!
错误描述:
/tmp/cc2qM4Lf.o(.text+0x1f): undefined reference to `err_quit'
/tmp/cc2qM4Lf.o(.text+0x53): undefined reference to `err_sys'
名为 的程序目的是显示一个目录下的文件内容,如下:
==========================================================================
#include
#include
#include "ourhdr.h"
int
main(int argc, char *argv[])
{
DIR *dp;
struct dirent *dirp;
if (argc != 2)
err_quit("a single argument (the directory name) is required");
printf("Error1");
if ( (dp = opendir(argv[1])) == NULL)
err_sys("can't open %s", argv[1]);
printf("Error2");
while ( (dirp = readdir(dp)) != NULL)
printf("%sn", dirp->d_name);
closedir(dp);
exit(0);
}
==========================================================================
其中包含的头函数,中间定义了'err_quit'和'err_sys':
==========================================================================
/* Our own header, to be included *after* all standard system headers */
#ifndef __ourhdr_h
#define __ourhdr_h
#include /* required for some of our prototypes */
#include /* for convenience */
#include /* for convenience */
#include /* for convenience */
#include /* for convenience */
#define MAXLINE 4096 /* max line length */
#define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
/* default file access permissions for new files */
#define DIR_MODE (FILE_MODE | S_IXUSR | S_IXGRP | S_IXOTH)
/* default permissions for new directories */
typedef void Sigfunc(int); /* for signal handlers */
/* 4.3BSD Reno doesn't define SIG_ERR */
#if defined(SIG_IGN) && !defined(SIG_ERR)
#define SIG_ERR ((Sigfunc *)-1)
#endif
#define min(a,b) ((a) (b) ? (a) : (b))
/* prototypes for our own functions */
char *path_alloc(int *); /* {Prog pathalloc} */
int open_max(void); /* {Prog openmax} */
void clr_fl(int, int); /* {Prog setfl} */
void set_fl(int, int); /* {Prog setfl} */
void pr_exit(int); /* {Prog prexit} */
void pr_mask(const char *); /* {Prog prmask} */
Sigfunc *signal_intr(int, Sigfunc *);/* {Prog signal_intr_function} */
int tty_cbreak(int); /* {Prog raw} */
int tty_raw(int); /* {Prog raw} */
int tty_reset(int); /* {Prog raw} */
void tty_atexit(void); /* {Prog raw} */
#ifdef ECHO /* only if has been included */
struct termios *tty_termios(void); /* {Prog raw} */
#endif
void sleep_us(unsigned int); /* {Ex sleepus} */
ssize_t readn(int, void *, size_t);/* {Prog readn} */
ssize_t writen(int, const void *, size_t);/* {Prog writen} */
int daemon_init(void); /* {Prog daemoninit} */
int s_pipe(int *); /* {Progs svr4_spipe bsd_spipe} */
int recv_fd(int, ssize_t (*func)(int, const void *, size_t));
/* {Progs recvfd_svr4 recvfd_43bsd} */
int send_fd(int, int); /* {Progs sendfd_svr4 sendfd_43bsd} */
int send_err(int, int, const char *);/* {Prog senderr} */
int serv_listen(const char *); /* {Progs servlisten_svr4 servlisten_44bsd} */
int serv_accept(int, uid_t *); /* {Progs servaccept_svr4 servaccept_44bsd} */
int cli_conn(const char *); /* {Progs cliconn_svr4 cliconn_44bsd} */
int buf_args(char *, int (*func)(int, char **));
/* {Prog bufargs} */
int ptym_open(char *); /* {Progs ptyopen_svr4 ptyopen_44bsd} */
int ptys_open(int, char *); /* {Progs ptyopen_svr4 ptyopen_44bsd} */
#ifdef TIOCGWINSZ
pid_t pty_fork(int *, char *, const struct termios *,
const struct winsize *); /* {Prog ptyfork} */
#endif
int lock_reg(int, int, int, off_t, int, off_t);
/* {Prog lockreg} */
#define read_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLK, F_RDLCK, offset, whence, len)
#define readw_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLKW, F_RDLCK, offset, whence, len)
#define write_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLK, F_WRLCK, offset, whence, len)
#define writew_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLKW, F_WRLCK, offset, whence, len)
#define un_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLK, F_UNLCK, offset, whence, len)
pid_t lock_test(int, int, off_t, int, off_t);
/* {Prog locktest} */
#define is_readlock(fd, offset, whence, len)
lock_test(fd, F_RDLCK, offset, whence, len)
#define is_writelock(fd, offset, whence, len)
lock_test(fd, F_WRLCK, offset, whence, len)
void err_dump(const char *, ...); /* {App misc_source} */
void err_msg(const char *, ...);
void err_quit(const char *, ...);
void err_ret(const char *, ...);
void err_sys(const char *, ...);
void log_msg(const char *, ...); /* {App misc_source} */
void log_open(const char *, int, int);
void log_quit(const char *, ...);
void log_ret(const char *, ...);
void log_sys(const char *, ...);
void TELL_WAIT(void); /* parent/child from {Sec race_conditions} */
void TELL_PARENT(pid_t);
void TELL_CHILD(pid_t);
void WAIT_PARENT(void);
void WAIT_CHILD(void);
#endif /* __ourhdr_h */
==========================================================================
错误描述:
/tmp/cc2qM4Lf.o(.text+0x1f): undefined reference to `err_quit'
/tmp/cc2qM4Lf.o(.text+0x53): undefined reference to `err_sys'
名为 的程序目的是显示一个目录下的文件内容,如下:
==========================================================================
#include
#include
#include "ourhdr.h"
int
main(int argc, char *argv[])
{
DIR *dp;
struct dirent *dirp;
if (argc != 2)
err_quit("a single argument (the directory name) is required");
printf("Error1");
if ( (dp = opendir(argv[1])) == NULL)
err_sys("can't open %s", argv[1]);
printf("Error2");
while ( (dirp = readdir(dp)) != NULL)
printf("%sn", dirp->d_name);
closedir(dp);
exit(0);
}
==========================================================================
其中包含的头函数,中间定义了'err_quit'和'err_sys':
==========================================================================
/* Our own header, to be included *after* all standard system headers */
#ifndef __ourhdr_h
#define __ourhdr_h
#include /* required for some of our prototypes */
#include /* for convenience */
#include /* for convenience */
#include /* for convenience */
#include /* for convenience */
#define MAXLINE 4096 /* max line length */
#define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
/* default file access permissions for new files */
#define DIR_MODE (FILE_MODE | S_IXUSR | S_IXGRP | S_IXOTH)
/* default permissions for new directories */
typedef void Sigfunc(int); /* for signal handlers */
/* 4.3BSD Reno doesn't define SIG_ERR */
#if defined(SIG_IGN) && !defined(SIG_ERR)
#define SIG_ERR ((Sigfunc *)-1)
#endif
#define min(a,b) ((a) (b) ? (a) : (b))
/* prototypes for our own functions */
char *path_alloc(int *); /* {Prog pathalloc} */
int open_max(void); /* {Prog openmax} */
void clr_fl(int, int); /* {Prog setfl} */
void set_fl(int, int); /* {Prog setfl} */
void pr_exit(int); /* {Prog prexit} */
void pr_mask(const char *); /* {Prog prmask} */
Sigfunc *signal_intr(int, Sigfunc *);/* {Prog signal_intr_function} */
int tty_cbreak(int); /* {Prog raw} */
int tty_raw(int); /* {Prog raw} */
int tty_reset(int); /* {Prog raw} */
void tty_atexit(void); /* {Prog raw} */
#ifdef ECHO /* only if has been included */
struct termios *tty_termios(void); /* {Prog raw} */
#endif
void sleep_us(unsigned int); /* {Ex sleepus} */
ssize_t readn(int, void *, size_t);/* {Prog readn} */
ssize_t writen(int, const void *, size_t);/* {Prog writen} */
int daemon_init(void); /* {Prog daemoninit} */
int s_pipe(int *); /* {Progs svr4_spipe bsd_spipe} */
int recv_fd(int, ssize_t (*func)(int, const void *, size_t));
/* {Progs recvfd_svr4 recvfd_43bsd} */
int send_fd(int, int); /* {Progs sendfd_svr4 sendfd_43bsd} */
int send_err(int, int, const char *);/* {Prog senderr} */
int serv_listen(const char *); /* {Progs servlisten_svr4 servlisten_44bsd} */
int serv_accept(int, uid_t *); /* {Progs servaccept_svr4 servaccept_44bsd} */
int cli_conn(const char *); /* {Progs cliconn_svr4 cliconn_44bsd} */
int buf_args(char *, int (*func)(int, char **));
/* {Prog bufargs} */
int ptym_open(char *); /* {Progs ptyopen_svr4 ptyopen_44bsd} */
int ptys_open(int, char *); /* {Progs ptyopen_svr4 ptyopen_44bsd} */
#ifdef TIOCGWINSZ
pid_t pty_fork(int *, char *, const struct termios *,
const struct winsize *); /* {Prog ptyfork} */
#endif
int lock_reg(int, int, int, off_t, int, off_t);
/* {Prog lockreg} */
#define read_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLK, F_RDLCK, offset, whence, len)
#define readw_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLKW, F_RDLCK, offset, whence, len)
#define write_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLK, F_WRLCK, offset, whence, len)
#define writew_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLKW, F_WRLCK, offset, whence, len)
#define un_lock(fd, offset, whence, len)
lock_reg(fd, F_SETLK, F_UNLCK, offset, whence, len)
pid_t lock_test(int, int, off_t, int, off_t);
/* {Prog locktest} */
#define is_readlock(fd, offset, whence, len)
lock_test(fd, F_RDLCK, offset, whence, len)
#define is_writelock(fd, offset, whence, len)
lock_test(fd, F_WRLCK, offset, whence, len)
void err_dump(const char *, ...); /* {App misc_source} */
void err_msg(const char *, ...);
void err_quit(const char *, ...);
void err_ret(const char *, ...);
void err_sys(const char *, ...);
void log_msg(const char *, ...); /* {App misc_source} */
void log_open(const char *, int, int);
void log_quit(const char *, ...);
void log_ret(const char *, ...);
void log_sys(const char *, ...);
void TELL_WAIT(void); /* parent/child from {Sec race_conditions} */
void TELL_PARENT(pid_t);
void TELL_CHILD(pid_t);
void WAIT_PARENT(void);
void WAIT_CHILD(void);
#endif /* __ourhdr_h */
==========================================================================
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你可以把他的lib.*,主要是lib.sun下的文件都编译了做成一个静态库,比如叫libmisc.a
然后编译的时候连接这个库就行了,中间有些文件可能不能编译通过(看你的系统)
,忽略掉,然后就可以了
然后编译的时候连接这个库就行了,中间有些文件可能不能编译通过(看你的系统)
,忽略掉,然后就可以了