静态库重复链接导致的LNK4006警告怎么解决？

[Herro]

结构是这样的

a调x,y库，而 x,y 库都调了z库

----x<---
| |
a<- z
| |
----y<---

这样导致x,y库都包含了z库，编译a库就等于输入了2次z库，出现LNK4006警告：xxx已经在xxx中定义，忽略第二个定义。

虽然大致知道原理，但。。。请问这种问题怎么解决？

谢谢各位。

[RockHwnd]

在Z.h中定义
#if !defined(Z_H)
#define Z_H
//Z.h的内容
#endif
就可以避免重复include了

[RockHwnd]

100分的这种问题竟然没有人来回答,难道另有玄机...:-S

[oyljerry]

恩，用头文件避免重复包含
或#pragma once

[gomi]

可以不用解决，不影响什么。
不过这种情况出现，显然代码有需要优化的地方。
检查一下为什么那个函数或全局变量会在多个地方定义。

[Herro]

头文件的那些东西我有写,没用... 因为这个和头文件无关啊

x.lib(z.obj) : warning LNK4006: "public: void __thiscall z::Init(void)" 已在 z.lib(z.obj) 中定义；已忽略第二个定义

[kingzai]

symbol already defined in object; second definition ignored

The given symbol, displayed in its decorated form, was multiply defined. When this warning is encountered, symbol will be added twice, but only its first form will be used
Tips

The given symbol may be a packaged function, created by compiling with /Gy. This symbol was included in more than one file but was changed between compilations. Recompile all files that include the symbol.


The given symbol may have been defined differently in two member objects in different libraries.


An absolute may have been defined twice, with a different value in each definition.


If the error message is received when combining libraries, symbol already exists in the library being added to.
If you are rebuilding the C run-time library, you can ignore this message.

[Herro]

msdn已经看过很多遍了

还是无法解决。。。。。

[xuzheng318]

#pragma once

[Herro]

试过了，加#pragma once没用。。。

[oyljerry]

既然是个warning，先运行一下，看看什么情况

[Herro]

运行一切正常