Golang：调用Windows DLL函数 [英] Golang: call Windows DLL functions

问题描述

我正在编写一个Go应用程序，可以调用Windows DLL。该DLL用MSVC编写，并使用__declspec（dllexport）进行外部C导出。

I am writing a Go app that calls into a Windows DLL. The DLL was written with MSVC and has extern "C" exports using __declspec(dllexport).

Go应用程序的顶部如下所示：

The top of my Go app is as follows:

//#cgo CFLAGS: -IC:/Repos/Module/include
//#cgo LDFLAGS: -L. C:/Repos/Module/go/bin/MyModule.dll
//#include <MyModule.h>
import "C"

我从模块调用函数，如下所示：

I'm calling functions from the module like so:

nRet := C.moduleImpl_len()

问题是，当我尝试运行此应用程序时，出现以下错误：

The problem is that when I try to run this app, I get the following error:

C:\Users\MINDO~1\AppData\Local\Temp\go-build836751819\mod\modimpl\_obj\modimpl.cgo2.o: In function `_cgo_e2aaf076ab69_Cfunc_moduleImpl_len':
C:/Repos/Module/go/src/mod/modimpl/modimpl.go:90: undefined reference to `moduleImpl_len'

我使用DUMPBIN查看了DLL导出的符号，并且它精确地显示了moduleImpl_len作为导出的符号。这也是MyModule.h中定义的符号。

I looked at the DLL exported symbols with DUMPBIN and it showed exactly "moduleImpl_len" as the exported symbol. This is also the symbol as defined in MyModule.h.

有关如何让符号链接而不必进入系统调用路径的任何建议？

Any suggestions on how I can get the symbols to link without having to go the syscall route?

推荐答案

如果你想链接到dll，你需要/想要LDFLAGS中的-lMyModule？ https://stackoverflow.com/a/15853231/32453

If you're trying to link against the dll you need/want "-lMyModule" in the LDFLAGS? https://stackoverflow.com/a/15853231/32453

这篇关于Golang：调用Windows DLL函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！