大唐双龙传漫画,金犊奖官网,杨浦区haobc
大神的链接：https://www.cnblogs.com/skynet/archive/2010/07/10/1774964.html
问题来源：编译简单的服务端程序，结果出现错误
$ g++ UNIX_TEXT.c -lunp
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0x26):
undefined reference to `Socket(int, int, int)'
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0x26):
relocation truncated to fit: R_X86_64_PC32 against undefined symbol
`Socket(int, int, int)'
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0x98):
undefined reference to `Listen(int, int)'
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0x98):
relocation truncated to fit: R_X86_64_PC32 against undefined symbol `Listen(int, int)'
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0xbb):
undefined reference to `Accept(int, sockaddr*, int*)'
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0xbb):
relocation truncated to fit: R_X86_64_PC32 against undefined symbol `Accept(int, sockaddr*, int*)'
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0x110):
undefined reference to `Write(int, void*, unsigned long)'
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0x110):
relocation truncated to fit: R_X86_64_PC32 against undefined symbol `Write(int, void*, unsigned long)'
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0x11d):
undefined reference to `Close(int)'
/tmp/cciCxwbF.o:UNIX_TEXT.c:(.text+0x11d):
relocation truncated to fit: R_X86_64_PC32 against undefined symbol `Close(int)'
collect2: error: ld returned 1 exit
status
同一个程序用g++编译就无法通过，但是用gcc却可以正常运行。
原因：c++允许函数重载，c不允许。所以两者的编译和链接规则不同。
解决方法：怎样实现混合编译，c++中使用c的函数；c中使用c++的函数
修改unp.h文件
开头：
我要评论1 #ifndef __unp_h
2 #define __unp_h
3
4 #ifdef __cplusplus
5 extern "C"
6 {
7 #endif
结尾：
1 #ifdef __cplusplus 2 } 3 #endif 4 5 #endif /* __unp_h */
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