x64 libraries build error

[gbalykov]

If I try to build with subsets specified for libraries, lots of different errors show up:

./build.sh --clang9 --arch x64 --configuration Release --subsetcategory libraries --subset native-src

error MSB3245: Could not resolve this reference. Could not locate the assembly "System.Collections". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. [/home/z/Dev/runtime/src/libraries/Microsoft.CSharp/src/Microsoft.CSharp.csproj]

error CS0246: The type or namespace name 'System' could not be found (are you missing a using directive or an assembly reference?) [/home/z/Dev/runtime/src/libraries/Microsoft.Extensions.Caching.Abstractions/src/Microsoft.Extensions.Caching.Abstractions.csproj]

IDistributedCache.cs(74,72): error CS0246: The type or namespace name 'CancellationToken' could not be found (are you missing a using directive or an assembly reference?) [/home/z/Dev/runtime/src/libraries/Microsoft.Extensions.Caching.Abstractions/src/Microsoft.Extensions.Caching.Abstractions.csproj]

etc.

Build without subsets is fine:

./build.sh --clang9 --arch x64 --configuration Release --subsetcategory libraries

Seems that this is related to depprojs and #33553:

runtime/eng/Subsets.props

Line 61 in 986518e

<DefaultLibrariesSubsets>depprojs-native-ref-src-pretest-packages</DefaultLibrariesSubsets>

cc @alpencolt @jkotas

Tagging @safern, @ViktorHofer as an area owner

[ViktorHofer]

Make sure that you ran -restore once. Currently deprojs only run for the full subsetCategory. We are planning to remove the depprojs so that the upfront restore isn't necessary anymore.

[safern]

Also, the error is because you're missing to build the ref assemblies which we use to build the src. So after running -restore once you would need to build native-ref-src if you haven't built the ref subset yet.

[gbalykov]

Thank you, that helped. So, the current working solution is:

./build.sh --clang9 --arch x64 --configuration Release --subsetcategory libraries --restore
./build.sh --clang9 --arch x64 --configuration Release --subsetcategory libraries --subset native-ref-src --build

[ViktorHofer]

You could also just do ./build.sh --arch x64 --configuration Release --subsetcategory libraries. Restore and build are implicit here. Also I don't think you need the --clang9 parameter here. If you are on x64 you don't need to specify --arch as well.

[gbalykov]

@ViktorHofer I want to build only specific subsets, e.g. I don't need packages and native in some cases, and src in others

[ViktorHofer]

Then you are good to go with this: ./build.sh --clang9 --arch x64 --configuration Release --subsetcategory libraries --subset depprojs-native-ref-src Restore and build is incremental here.

[gbalykov]

depprojs is not available from the command line and is not listed in the list from --subset --help

[ViktorHofer]

Oh right. We plan to remove them anyway soon. I'll fix this in the meantime.

[ViktorHofer]

They are available now on latest master. Closing as I believe this issue is now fixed.