[release/10.0.1xx] ProcessFrameworkReferences: use portable ILCompiler when RuntimeIdentifier is null.#52485
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baronfel merged 10 commits intorelease/10.0.1xxfrom Jan 28, 2026
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…times if it's empty (#52685) Co-authored-by: Marc Paine <marcpop@microsoft.com>
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Backport of #52407 to release/10.0.1xx
Fixes #52395
Fixes #42335
Customer Issue
Users trying to publish NativeAOT applications on source-built SDKs would error because the tooling always directed them to non-portable versions of the NativeAOT tooling - which may not be present in the installs. The desired semantic is that the source-built AOT tooling should only be used when targeting the non-portable RID associated with the source-built SDK platform.
Description
This PR ensures that on all SDKs, the 'portable' version of the AOT tooling is used when no explicit RID is chosen for targeting. This means that by default applications that users build with NativeAOT will user Microsoft binaries from NuGet. Users that specifically want to target non-portable RIDs (e.g.
fedora.x.y) must specify that RID explicitly.Was this a regression?
Testing
A new test has been added that explicitly maps out the expected behaviors:
Risk
Low - there is broader testing coverage of asset selection now and this pathway continues to work as expected for all other AOT/Trimming related publishing tests.