Runtime dylibs can't be stripped: error: symbols referenced by indirect symbol table entries that can't be stripped in:

[rolfbjarne]

Repro:

#!/bin/bash -eux

PKG=Microsoft.NETCore.App.Runtime.osx-x64
curl -L https://www.nuget.org/api/v2/package/$PKG/11.0.0-preview.1.26104.118 -o $PKG.nupkg

rm -rf nupkg
unzip -d nupkg $PKG.nupkg 'runtimes/osx-x64/native/libcoreclr.dylib'

xcrun strip nupkg/runtimes/osx-x64/native/libcoreclr.dylib

Result:

$ ./test.sh
+ PKG=Microsoft.NETCore.App.Runtime.osx-x64
+ curl -L https://www.nuget.org/api/v2/package/Microsoft.NETCore.App.Runtime.osx-x64/11.0.0-preview.1.26104.118 -o Microsoft.NETCore.App.Runtime.osx-x64.nupkg
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   266    0   266    0     0    453      0 --:--:-- --:--:-- --:--:--   454
100 37.5M  100 37.5M    0     0  34.5M      0  0:00:01  0:00:01 --:--:-- 90.2M
+ rm -rf nupkg
+ unzip -d nupkg Microsoft.NETCore.App.Runtime.osx-x64.nupkg runtimes/osx-x64/native/libcoreclr.dylib
Archive:  Microsoft.NETCore.App.Runtime.osx-x64.nupkg
  inflating: nupkg/runtimes/osx-x64/native/libcoreclr.dylib
+ xcrun strip nupkg/runtimes/osx-x64/native/libcoreclr.dylib
/Applications/Xcode_26.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip: error: symbols referenced by indirect symbol table entries that can't be stripped in: /Users/rolf/test/nupkg/runtimes/osx-x64/native/libcoreclr.dylib
_CCRandomGenerateBytes
_CFRelease
_CFStringCreateWithCString
_CFUserNotificationDisplayAlert
_SessionGetInfo
__NSGetEnviron
__NSGetExecutablePath
__Unwind_Resume
__ZSt9terminatev
[... numerous other symbols ... ]

I'm not sure if this is the expected behavior (i.e. these dylibs shouldn't be stripped), or if there's a bug somewhere, but filing an issue to get clarification on this at least.

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[akoeplinger]

Sounds like this might be expected for plain strip: rust-lang/rust#93988 ?

[kotlarmilos]

I suggest to strip debug sections and local symbols: xcrun strip -S -x