名称修改和转储箱
昨天我正在帮助朋友编译Intel的MKL Java示例。尽管一切看起来都很好（根据示例文件/makefile），我们还是遇到了“未解决的外部问题”的问题。
然后我使用了 Visual Studio 的 dumpbin检查库中是否存在未解析的函数。未解析的外部的一个示例是名为 _cblas_sgemm 的函数。当从库（dumpbin /symbols mkl_core.lib）转储符号时，我只能在库上找到一个函数cblas_sgemm，它错过了前缀_。然后我发现该函数实际上仅称为 cblas_sgemm，并且编译器添加了 _ 前缀，作为名称修改规则的一部分。
TL;DR
那么，我的问题是：
dumpbin是否显示库中入口点的全名？或者由于某种原因它实际上“解开了”这个名字？- 该库是随安装包一起提供的，所以不知道是用哪个编译器编译的。不同的编译器会产生不同的名称吗？
我真的不认为我做对了；我可能在其他地方做错了什么，但我想确定这两个问题。
此处有一个没有答案的类似问题。
Yesterday I was helping a friend to compile Intel's MKL Java examples. We were having issues with "unresolved externals", even though everything seemed fine (accordingly to the example files / makefile).
I then used Visual Studio's dumpbin to check whether the unresolved functions were present in the library. One example of a unresolved external was a function called _cblas_sgemm. When dumping the symbols from the library (dumpbin /symbols mkl_core.lib), I was only able to find a function cblas_sgemm on the library, which missed the prefix _. I then discovered that the function actually was only called cblas_sgemm, and that the compiler added the _ prefix, as part of the name mangling rule.
TL;DR
So, my questions are:
- Does
dumpbindisplays the full name of the entry point in the library? Or for some reason it actually "unmangles" the name? - The library came with the installation package, so I don't know which compiler was used to compile it. Does different compilers produce different names?
I don't really think I got it right; I'm probably doing something wrong somewhere else, but I want to be sure about those two questions.
A similar question with no answers is here.
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
dumpbin将显示库中（而不是源代码中）符号的全名，没有任何更改。对于 MS 损坏的 C++ 名称，它将在括号中显示原始符号（如果它可以找出原始符号）。 （使用 dumpbin 9.00.21022.08 进行测试）不同的编译器确实会生成不同的符号，特别是对于 C++ 符号。对于符号，编译器往往会就名称修改达成一致，因此
extern "C"符号可以在不同编译器之间链接。这是一篇关于名称修改的维基百科文章。
dumpbinwill show the full name of symbol in the library(not in the source), without any alternation. For MS mangled of C++ names, it will show the original symbol in parenthesis (if it can figure out the original symbol). (tested with dumpbin 9.00.21022.08)Different compilers do generate different symbols, especially for C++ symbols. For symbols, compilers tend to have an agreement about name mangling, so
extern "C"symbols can be linked between different compilers.Here is an wikipedia article about name mangling.