Pergunta

Firstly, I've seen this question, and while the problem seems similar, it is not the same.

I'm running a trimmed down mono, built without the 4.5 profile using ./configure --with-profile4=yes --with-profile4_5=no.

I have an application that targets .NET 4.0, built using mono's xbuild. When I run it against my trimmed down mono installation, I get this error:

The assembly mscorlib.dll was not found or could not be loaded. It should have been installed in the `/opt/my-app/mono/lib/mono/4.5/mscorlib.dll' directory.

Now, I'm not referencing only 4.0 assemblies - nothing from 4.5, AFAICS.

Why might I be getting this error?

I'm not sure if it's related, but I get this warning when building with xbuild (but not when building with msbuild, although I still get the mscorlib.dll when running against my trimmed down mono):

warning CS1685: The predefined type `System.Runtime.CompilerServices.ExtensionAttribute' is defined multiple times.
Using definition from `mscorlib.dll' 

I'm also not sure if this is relevant either, but the build machine does has .NET 4.5 installed.

Foi útil?

Solução

I figured it out - I needed to set MONO_PATH to:

/opt/my-app/mono/lib/mono/4.0:/opt/my-app/mono/lib/mono/3.5:/opt/my-app/mono/lib/mono/2.0:.

So I needed to tell it where to look for libraries; I had (wrongly) assumed that would be automatic based on the location of the mono executable.

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