CODEWITHSUNDEEP
c#linuxelfrpath
0xC0000022L
0xC0000022L

Reputation: 21309

How to control the RPATH of a launcher created with "dotnet publish --self-contained" on Linux?

When using dotnet publish --self-contained one gets a launcher that has a hard-coded RPATH as follows:

$ llvm-readelf-16 -d launcher
Dynamic section at offset 0x217b0 contains 33 entries:
  Tag                Type           Name/Value
  0x0000000000000001 (NEEDED)       Shared library: [libpthread.so.0]
  0x0000000000000001 (NEEDED)       Shared library: [libdl.so.2]
  0x0000000000000001 (NEEDED)       Shared library: [libstdc++.so.6]
  0x0000000000000001 (NEEDED)       Shared library: [libm.so.6]
  0x0000000000000001 (NEEDED)       Shared library: [libgcc_s.so.1]
  0x0000000000000001 (NEEDED)       Shared library: [libc.so.6]
  0x000000000000000f (RPATH)        Library rpath: [$ORIGIN/netcoredeps]
...

I already attempted to solve this with LDFLAGS while invoking dotnet publish. Alas, I think ld isn't even getting invoked under the hood and therefore this has no effect.

So my question: is there a way to control the RPATH of a launcher created with dotnet publish?

PS: using .NET 6.x currently on Ubuntu 22.04 (the packaged .NET).

Upvotes: 0

Views: 196

Answers (1)

teapot418
teapot418

Reputation: 2578

Judging by this

The main executable of published .NET Core applications ... has an RPATH property set to $ORIGIN/netcoredeps

it is not meant to be configurable.

Source: https://github.com/dotnet/core/blob/main/Documentation/self-contained-linux-apps.md

There's always patchelf which you can use to edit or remove the RPATH after the fact.

Upvotes: 2

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