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I'm trying to convert a particular .NET dll (System.DirectoryServices) to a Java stub using ikvmstub.exe. I get the following error:

ikvmstub.exe System.DirectoryServices.dll Error: unable to load assembly 'System.DirectoryServices.dll' as it depends on a higher version of mscorlib than the one currently loaded

I believe the DLL depends on v4.0.30319, which I have. So I ran this command and got the following output:

ikvmstub.exe -nostdlib -r:/c/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll System.DirectoryServices.dll Error: unable to find mscorlib.dll

The path I gave to mscorlib is definitely correct. For the record, I'm in Git Bash in Windows 7. What can I do to resolve this error?

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  • Writing a java stub of DirectoryServices seems... Odd. You may want to write a dll that just exposes what you need and have that user made dll call into DirectoryServices instead. (Or even better, find a Active Directory management java library) Commented Sep 9, 2015 at 20:50
  • Yes, it's odd. I'm trying to allow users to authenticate to and query AD without entering their passwords. This is possible in C# but not in any Java library I'm familiar with. I thought that by exposing the DirectoryServices library to Java I'd be able to take advantage of C#'s access to the existing AD bind. Commented Sep 10, 2015 at 13:03

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Still not sure why this was occurring, but I solved it by reading through the IKVM source.

internal void Init(Universe universe, bool nostdlib, IList<string> references, IList<string> userLibPaths) { this.universe = universe; // like the C# compiler, the references are loaded from: // current directory, CLR directory, -lib: option, %LIB% environment // (note that, unlike the C# compiler, we don't add the CLR directory if -nostdlib has been specified) ...

So I nagivated to the directory where mscorlib and my target dll were located, called ikvmstub.exe from there, and it worked fine.

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