@jkoritzinsky, could you please run extra-platform pipeline against this PR? It was added to fix linux-musl-x64 cross build on linux-x64 host in https://github.com/dotnet/runtime/pull/84870/files, but I think we don't need this argument (--target should be enough). If it fails, then we can limit it to linux-musl or exclude freebsd but lets try this first.

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/azp run runtime-extra-platforms

Thanks, linux_musl-x64 leg is green without --gcc-toolchain, e.g.:

before (on main): https://dev.azure.com/dnceng-public/public/_build/results?buildId=1006646&view=logs&j=a5a10ef5-00b4-5192-a5e0-d5614c791e6e&t=49464f9f-dc77-5c1e-eb52-f05912fd00b7

Building native export: "/usr/local/bin/clang-20" -O2 -shared -fpic -D DNNE_ASSEMBLY_NAME=Microsoft.Interop.Tests.NativeExports -D DNNE_COMPILE_AS_SOURCE -I "/__w/1/s/.packages/dnne/2.0.5/tools/platform" -I "/__w/1/s/.packages/microsoft.netcore.app.host.linux-musl-x64/10.0.0-preview.3.25162.19/runtimes/linux-musl-x64/native" -o "/__w/1/s/artifacts/obj/NativeExports/Release/net10.0/linux-musl-x64/dnne/bin/Microsoft.Interop.Tests.NativeExportsNE.so" --target=x86_64-alpine-linux-musl --gcc-toolchain=/crossrootfs/x64/usr --sysroot=/crossrootfs/x64 "/__w/1/s/artifacts/obj/NativeExports/Release/net10.0/linux-musl-x64/dnne/Microsoft.Interop.Tests.NativeExports.g.c" "/__w/1/s/.packages/dnne/2.0.5/tools/platform/platform.c" -lstdc++ "/__w/1/s/.packages/microsoft.netcore.app.host.linux-musl-x64/10.0.0-preview.3.25162.19/runtimes/linux-musl-x64/native/libnethost.a" --target=x86_64-alpine-linux-musl --gcc-toolchain=/crossrootfs/x64/usr --sysroot=/crossrootfs/x64 -fuse-ld=lld -Wl,--rpath-link=/crossrootfs/x64/lib/x86_64-alpine-linux-musl -Wl,--rpath-link=/crossrootfs/x64/usr/lib/x86_64-alpine-linux-musl

after (this PR): https://dev.azure.com/dnceng-public/public/_build/results?buildId=1030263&view=logs&j=a5a10ef5-00b4-5192-a5e0-d5614c791e6e&t=49464f9f-dc77-5c1e-eb52-f05912fd00b7

Building native export: "/usr/local/bin/clang-20" -O2 -shared -fpic -D DNNE_ASSEMBLY_NAME=Microsoft.Interop.Tests.NativeExports -D DNNE_COMPILE_AS_SOURCE -I "/__w/1/s/.packages/dnne/2.0.5/tools/platform" -I "/__w/1/s/artifacts/bin/linux-musl-x64.Release/corehost" -o "/__w/1/s/artifacts/obj/NativeExports/Release/net10.0/linux-musl-x64/dnne/bin/Microsoft.Interop.Tests.NativeExportsNE.so" --target=x86_64-alpine-linux-musl --sysroot=/crossrootfs/x64 "/__w/1/s/artifacts/obj/NativeExports/Release/net10.0/linux-musl-x64/dnne/Microsoft.Interop.Tests.NativeExports.g.c" "/__w/1/s/.packages/dnne/2.0.5/tools/platform/platform.c" -lstdc++ "/__w/1/s/artifacts/bin/linux-musl-x64.Release/corehost/libnethost.a" --target=x86_64-alpine-linux-musl --sysroot=/crossrootfs/x64 -fuse-ld=lld -Wl,--rpath-link=/crossrootfs/x64/lib/x86_64-alpine-linux-musl -Wl,--rpath-link=/crossrootfs/x64/usr/lib/x86_64-alpine-linux-musl

Rest of the failures are unrelated.

/ba-g WBT failures unrelated