《Unix网络编程卷1-套接字联网API》第一个例子编译

第一个例子：一个简单的时间获取客户程序，利用GCC编译会出错，需要查看源码中的README文档。

下载源码 unpv13e解压，可看到README文档，打开可看到：

Execute the following from the src/ directory:

./configure    # try to figure out all implementation differences

cd lib         # build the basic library that all programs need
make           # use "gmake" everywhere on BSD/OS systems

cd ../libfree  # continue building the basic library
make

cd ../libroute # only if your system supports 4.4BSD style routing sockets
make           # only if your system supports 4.4BSD style routing sockets

cd ../libxti   # only if your system supports XTI
make           # only if your system supports XTI

cd ../intro    # build and test a basic client program
make daytimetcpcli
./daytimetcpcli 127.0.0.1

If all that works, you're all set to start compiling individual programs.

进入到unpv13e的目录中

1、$ ./configure 执行。会出现权限不够的提醒，用chmod 777 修改权限即可，然后执行通过

2、cd lib

make

通过

3、cd ../libfree

make

通过

4、接下来的两次make不是必须的，敲make。有可能编译不通过，我的只通过了 libroute，后一个未通过。

5、执行最后一步

cd ../intro

make daytimetcpcli

./daytimetcpcli 127.0.0.1

发现出错—–connect error: Connection refused

解决方法：

因为系统默认的daytime服务是关闭的，在这个目录下有一个daytimetcpsrv.c文件， 执行make，编译后执行daytimetcpsrv，即sudo ./daytimetcpsrv。它的功能就是开启本机的daytime服务，再次执行./daytimetcpcli 127.0.0.1 h会通过。