Roslyn fails to load analyzer dependency assemblies

[alexperovich]

Version Used: 2.0.0-beta3

Steps to Reproduce:

1. sync to dotnet/corefx master
2. Replace BuildToolsVersion.txt with the following:

1.0.27-prerelease-01001-03

3. run init-tools.cmd
4. touch foo.cs
5. run csc using Tools/dotnetcli/dotnet.exe Tools/csc.exe with the following commands:

/target:library
/out:foo.dll
/analyzer:Tools/analyzers/Desktop.CSharp.Analyzers.dll
foo.cs

Expected Behavior:
binary foo.dll is produced with no warnings

Actual Behavior:
The analyzer fails to load due to missing dependencies. The specific dependency is Desktop.Analyzers.dll

[srivatsn]

You'll have to pass in all dependencies of an analyzer as input to the compiler. In this case there should be another /analyzer:Tools/analyzers/Desktop.Analyzers.dll

[alexperovich]

The same thing happens with both assemblies passed into the compiler.

[srivatsn]

@mavasani can you take a look at why it fails if the full set of dependencies?

[mavasani]

I am able to repro this issue with the above repro steps. Analyzers with dependencies fail to load with dotnetcore csc but work fine with netfx csc. This is the same issue as summarized in dotnet/roslyn-analyzers#1028 (comment). As summarized by @srivatsn in dotnet/roslyn-analyzers#1028 (comment), you will need .NetCore 1.1 and VS2017 RC compiler toolset to get the relevant fixes for this to work.