One of the problems i found so far is, that when having net5.0 installed (ubuntu 20.04, using rider as IDE),
the compilation fails with
Sdk.targets(201, 9): [NETSDK1005] Assets file 'obj/project.assets.json' doesn't have a target for '.NETStandard,Version=v2.0'. Ensure that restore has run and that you have included '.NETStandard,Version=v2.0' in the TargetFrameworks for your project.
while using
<TargetFramework>netstandard2.0</TargetFramework>.
However when using
<TargetFramework>.NETStandard,Version=v2.0</TargetFramework>
the error is gone. The compilation itself then crashes with the message
H5 : error H5003: The SDK 'h5.Target/0.0.11500' specified could not be found.
which btw crashes with the same error using netcore 3.1 only too on my machine.

Hi @IceReaper - I think I hit that before, seems like something strange changed on the MSBuild included in the NET5.0.
What's happening is that MSBuild is not locating the nuget package that contains the project SDK target (https://www.nuget.org/packages/h5.target/) and is not restoring it either.
I'm planning to start updating our own stack to net50 quite soon, and that will start with h5. I'll post an update here as soon as I've some time to get this going!

by the way - fully uninstalling the net50 preview and keeping only the netcore3.1 sdk fixed the issue for me - you might want to give it a try!

Nope, i've created another issue for now for net 3.1, so the two versions do not mix up here.

@IceReaper finally updated to net5.0 - think I found the cause of the bug when using the latest MSBuild (dotnet/msbuild#5875), and a workaround for it. Will be available soon!

@IceReaper published the updated compiler, targets, etc... now supporting NET5.0 :)

https://www.nuget.org/packages/h5-compiler
https://www.nuget.org/packages/h5.target

Let me know if you hit any issues post-update!

@IceReaper finally updated to net5.0 - think I found the cause of the bug when using the latest MSBuild (dotnet/msbuild#5875), and a workaround for it. Will be available soon!

Building triggers precisely the problem you mentioned above. I tried to add the 4 workaround tags to my csproj file, but that didnt fix it.

<Project Sdk="h5.Target/0.0.13615"> and i did dotnet tool update --global h5-compiler --version 0.0.13622

Did some more tests: It is related to #29 Without any dependency it compiles correctly. Adding another library breaks it. So i guess #25 is resolved.