链接静态库时__imp_前缀错误

最新推荐文章于 2023-07-05 10:58:19 发布

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最新推荐文章于 2023-07-05 10:58:19 发布

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本文探讨了Visual Studio中链接静态库时出现的__imp_函数名未找到错误，并解释了如何通过正确使用__declspec(dllimport)来解决这一问题。同时，文中还提到了当调用特定函数如UuidEqual时，需要引入相应的库文件才能避免链接错误。

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visual studio 中链接静态库, 出现找不到 __imp_函数名的错误, extern "C"也增加了

找到一段

Logically, the next question to ask is how to get the optimized form. The answer comes in the form of a hint you give to the compiler. The __declspec(dllimport) function modifier tells the compiler that the function resides in another DLL and that the compiler should generate this instruction

CALL DWORD PTR [XXXXXXXX]

rather than this one:

CALL XXXXXXXX

In addition, the compiler emits information telling the linker to resolve the function pointer portion of the instruction to a symbol named __imp_functionname. For instance, if you were calling MyFunction, the symbol name would be __imp_MyFunction. Looking in an import library, you'll see that in addition to the regular symbol name, there's also a symbol with the __imp__ prefix on it. This __imp__ symbol resolves directly to the IAT entry, rather than to the JMP stub.

如果函数声明增加了__declspec(dllimport) ，

链接的时候函数名会加上__imp_前缀，所以如果链接静态库，函数的声明不用增加__declspec(dllimport) 。如果链接动态库，再增加__declspec(dllimport)。

（最后又糊涂了：

最近调用UuidEqual，报错：

error LNK2019: 无法解析的外部符号 __imp__UuidEqual@12

加上库 Rpcrt4.lib就好了
）

http://co63oc.blog.51cto.com/904636/978193