IncludeNativeLibrariesForSelfExtract does not include Mach-O universal binaries

[pjc50]

Description

I have a library which identifies in 'file' as

Mach-O universal binary with 2 architectures: [x86_64:\012- Mach-O 64-bit x86_64 dynamically linked shared library, flags:<NOUNDEFS|DYLDLINK|TWOLEVEL|NO_REEXPORTED_DYLIBS|HAS_TLV_DESCRIPTORS>] [\012- arm64:\012- Mach-O 64-bit arm64 dynamically linked shared library, flags:<NOUNDEFS|DYLDLINK|TWOLEVEL|NO_REEXPORTED_DYLIBS|HAS_TLV_DESCRIPTORS>]

It has the magic number 'ca fe ba be' in the first four bytes. For some reason, this is considered to be 'Unknown' and therefore not added unless the option IncludeAllContentForSelfExtract is set to True.

Reproduction Steps

Add a Mach-O universal binary .dylib to a single-file project on OSX

Set IncludeNativeLibrariesForSelfExtract to True

Expected behavior

dylib should be included in self-extracted files

Actual behavior

dylib is not included

Regression?

No response

Known Workarounds

Use IncludeAllContentForSelfExtract

Configuration

No response

Other information

No response

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[pjc50]

Forgot to mention - SDK version 8.0.303

[elinor-fung]

@pjc50 would you be able to try .NET 10 Preview 1 or later? I think @jtschuster addressed this in #108992 (started respecting the magic values for universal macOS binaries).

[elinor-fung]

Verified that universal binaries get included in .NET 10.