Linux - Unix环境高级编程(第三版) 源代码编译（即头文件apue.h如何使用问题）

1. 下载代码：http://www.apuebook.com/code3e.html

2. 安装依赖库：sudo apt-get install libbsd-dev 

3. 进入下载目录make

4. 复制头文件和动态链接库

 sudo cp ./include/apue.h /usr/include/
 sudo cp ./lib/libapue.a /usr/local/lib/
 sudo cp ./lib/libapue.a /usr/lib/

5. 设置 错误文件error.h

 #include "apue.h"
 #include       /* for definition of errno */
 #include      /* ISO C variable aruments */

 static void err_doit(int, int, const char *, va_list);

 /*
  * Nonfatal error related to a system call.
  * Print a message and return.
  */
 void err_ret(const char *fmt, ...)
 {
     va_list     ap;

     va_start(ap, fmt);
     err_doit(1, errno, fmt, ap);
     va_end(ap);
 }


 /*
  * Fatal error related to a system call.
  * Print a message and terminate.
  */
 void err_sys(const char *fmt, ...)
 {
     va_list     ap;

     va_start(ap, fmt);
     err_doit(1, errno, fmt, ap);
     va_end(ap);
     exit(1);
 }


 /*
  * Fatal error unrelated to a system call.
  * Error code passed as explict parameter.
  * Print a message and terminate.
  */
 void err_exit(int error, const char *fmt, ...)
 {
     va_list     ap;

     va_start(ap, fmt);
     err_doit(1, error, fmt, ap);
     va_end(ap);
     exit(1);
 }


 /*
  * Fatal error related to a system call.
  * Print a message, dump core, and terminate.
  */
 void err_dump(const char *fmt, ...)
 {
     va_list     ap;

     va_start(ap, fmt);
     err_doit(1, errno, fmt, ap);
     va_end(ap);
     abort();        /* dump core and terminate */
     exit(1);        /* shouldn't get here */
 }


 /*
  * Nonfatal error unrelated to a system call.
  * Print a message and return.
  */
 void err_msg(const char *fmt, ...)
 {
     va_list     ap;

     va_start(ap, fmt);
     err_doit(0, 0, fmt, ap);
     va_end(ap);
 }


 /*
  * Fatal error unrelated to a system call.
  * Print a message and terminate.
  */
 void err_quit(const char *fmt, ...)
 {
     va_list     ap;

     va_start(ap, fmt);
     err_doit(0, 0, fmt, ap);
     va_end(ap);
     exit(1);
 }


 /*
  * Print a message and return to caller.
  * Caller specifies "errnoflag".
  */
 static void err_doit(int errnoflag, int error, const char *fmt, va_list ap)
 {
     char    buf[MAXLINE];
    vsnprintf(buf, MAXLINE, fmt, ap);
    if (errnoflag)
        snprintf(buf+strlen(buf), MAXLINE-strlen(buf), ": %s",
          strerror(error));
    strcat(buf, "\n");
    fflush(stdout);     /* in case stdout and stderr are the same */
    fputs(buf, stderr);
    fflush(NULL);       /* flushes all stdio output streams */
 }

6. 注销，重启

7. 代码文件

 #include "apue.h"
 #include "error.h"