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Comment by andrewmd5 | Hacker News Reader

The binary is that big on Linux because the debug symbols are embedded in the executable. You need to strip them.

In the interest of keeping the comment small, I omitted a couple things:

    -p:Configuration=Release -p:DebuggerSupport=false

FWIW, I did also try the following, but found they had basically no impact on output size:

    -p:TrimMode=link
    -p:EnableUnsafeBinaryFormatterSerialization=false 
    -p:EnableUnsafeUTF7Encoding=false 
    -p:EventSourceSupport=false 
    -p:HttpActivityPropagationSupport=false

(Tested on .NET Core 3.1.5)

Huh, the debug symbols are in separate .pdb files, aren't they?

38MB is a pretty typical size for a real-world, self-contained, assembly-trimmed package, and the size comes from the runtime itself, plus the core assemblies that weren't trimmed out.

Actually, in my tests with the AoT compiler I had to strip the binary to get a significantly smaller one despite there being a .pdb file. Your mileage may vary as the build flags can be a bit fiddly.

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