errno 2019错误

最新推荐文章于 2024-01-11 18:58:09 发布

seayou

最新推荐文章于 2024-01-11 18:58:09 发布

阅读量1.1k

点赞数

CC 4.0 BY-SA版权

分类专栏： window 编程文章标签： linker insert mfc date file c

本文链接：https://blog.youkuaiyun.com/seayou/article/details/4263422

window 编程专栏收录该内容

6 篇文章

订阅专栏

本文解决Visual C++链接器报告未定义符号的问题，通过添加空白C++源文件并声明特定全局变量来避免不同库之间的冲突。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

不是用预编译头，加入下面的东西

Visual C++ linker complaints about undefined symbols.
--------------------------------------------------------------------------------

Article ID#: 0007
Date: 4/7/97
Product: ST-Developer 1.5
Platform: Windows

Description of the problem
When linking a project, Visual C++ linker shows the following messages:
Linking...
rose.lib(IORose.obj) : error LNK2001: unresolved external symbol __pctype
rose.lib(IORose.obj) : error LNK2001: unresolved external symbol ___mb_cur_max
rose.lib(RoseServer.obj) : error LNK2001: unresolved external symbol _errno
p21.exe : fatal error LNK1120: 3 unresolved externals
Error executing link.exe.

Explanation
The problem is due to the different definitions of these symbols in ROSE and MFC libraries.

Solution
To fix this problem add a new blank C++ source file to your project, and insert the following code into it:
extern "C"
{
    int __mb_cur_max;
    unsigned short* _pctype;
    int errno;
}

Do not add anything else to this file.