g ++：如何取消导出的符号 [英] g++: How to unmangle exported symbols

问题描述

我试图编译一个使用JNI的Java库。当我启动程序时，我看到一个UnsatisfiedLinkError崩溃，它说DLL中找不到特定的方法。

I'm trying to compile a Java library that uses JNI. When I start the program, I see a crash with an UnsatisfiedLinkError, which says that a particular method could not be found in the DLL.

仔细检查后，我发现我用于编译和链接的g ++通过向方法名称添加后缀（如@ 8或@ 16）来改变我的方法名称。有没有人知道正确的编译器选项来禁用名称修改？提前感谢！

On closer inspection, I found out that g++, which I use for compilation and linking, mangled my method names by adding suffixes such as "@8" or "@16" to the method names. Does anybody know the correct compiler options to disable the name mangling? Thanks in advance!

编辑：我通过Eclipse + CDT插件使用MinGW。

EDIT: I'm using MinGW through Eclipse + CDT plugin.

推荐答案

对于使用GCC编译的Windows DLL的JNI调用，您需要在链接阶段向GCC添加add-stdcall-alias参数：

For JNI calls to work with Windows DLLs compiled with GCC you need to add a add-stdcall-alias parameter to GCC on linking phase:

gcc -Wl,--add-stdcall-alias

这将为DLL添加正确的函数名称，从而通过JNI启用调用。

Which will add correct function names to the DLL and thus enable calls via JNI.

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