Reduce size of AOT SDK images by removing unnecessary packages#7231
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This PR is ready for review, but it should be merged only after #7234 is merged. |
mthalman
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Jun 11, 2026
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Native AOT compilation only needs a linker and something to drive it. The .NET runtime defaults to clang but falls back to gcc when clang isn't present. Both are used to drive the same
bfdlinker under the hood, so clang/llvm is not needed. Here is where the runtime calculates the toolchain/linker: https://github.com/dotnet/runtime/blob/4832002fd28748322015287b8fb3b8126334865f/src/coreclr/nativeaot/BuildIntegration/Microsoft.NETCore.Native.Unix.targets#L18-L26We also replace the heavyweight
build-base/build-essentialmeta-packages with just the packages AOT linking actually requires (gcc, binutils, libc dev headers, zlib dev).This is applied only to .NET 11; changing the toolchain on .NET 10 and earlier would be a breaking change.
Size impact: