问题描述
首先，我看到 this question，虽然问题看起来很相似，但其实不一样.
Firstly, I've seen this question, and while the problem seems similar, it is not the same.
我正在运行一个精简的单声道，使用 ./configure --with-profile4=yes --with-profile4_5=no 在没有 4.5 配置文件的情况下构建.
I'm running a trimmed down mono, built without the 4.5 profile using ./configure --with-profile4=yes --with-profile4_5=no.
我有一个针对 .NET 4.0 的应用程序，使用 mono 的 xbuild 构建.当我针对精简后的单声道安装运行它时，出现此错误:
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:
<代码>未找到或无法加载程序集 mscorlib.dll.它应该已经安装在 `/opt/my-app/mono/lib/mono/4.5/mscorlib.dll' 目录中.
现在，我不仅仅引用 4.0 程序集 - 没有任何来自 4.5 的 AFAICS.
Now, I'm not referencing only 4.0 assemblies - nothing from 4.5, AFAICS.
为什么我会收到此错误?
Why might I be getting this error?
我不确定它是否相关，但我在使用 xbuild 构建时收到此警告(但在使用 msbuild 构建时没有，尽管我仍然收到 mscorlib.dll 运行时针对我修剪的单声道):
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'
我也不确定这是否相关，但构建机器确实安装了 .NET 4.5.
I'm also not sure if this is relevant either, but the build machine does has .NET 4.5 installed.
推荐答案
我想通了 - 我需要将 MONO_PATH 设置为:
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:.
所以我需要告诉它在哪里寻找图书馆；我曾(错误地)假设这将根据单声道可执行文件的位置自动进行.
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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