I have a minimal c++ script that's called from a minimal c# script. The dll is compiled on Windows 10 using mingw g++ and it works fine in the editor. Build an run however leads to the following error message:> Plugins: Failed to load 'C:/(...)/dll-example_Data/Plugins/libTest.dll' with error 'A dynamic link library (DLL) initialization routine failed.
Here's the .cs file:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Runtime.InteropServices;
public class TestScript : MonoBehaviour
{
[DllImport("libTest", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)]
public static extern int TestFunction();
void Start()
{
Debug.LogFormat("libTest says: {0}", TestFunction());
}
}
And the .cpp:
extern "C" {
int __stdcall __declspec(dllexport) TestFunction() {
int* test = new int[1]; // removing this line will make everything work when building
return 4;
}
}
Here's how I build it:
g++ -O2 -g -Wall -c -fmessage-length=0 Test.cpp
g++ -shared -o libTest.dll Test.o
So If I delete the marked line (int* test = ...), recompile and replace the .dll everything works fine using the build .exe and the editor.
Any suggestions would be appreciated!
I've tried finding a difference between the dlls using ldd, objdump and dumpbin.exe but couldn't find anything obvious, however I'm not quite an expert with these tools.
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