Public bug reported:
It seems to me that dotnet7 and dotnet8 packages do not use the system
libunwind library.
ldd /usr/lib/dotnet/shared/Microsoft.NETCore.App/*/libcoreclr.so
/usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.27/libcoreclr.so:
linux-vdso.so.1 (0x00007ffce9bdc000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007c022f3fe000)
libunwind-x86_64.so.8 => /lib/x86_64-linux-gnu/libunwind-x86_64.so.8
(0x00007c022f3e2000)
libunwind.so.8 => /lib/x86_64-linux-gnu/libunwind.so.8 (0x00007c022f3c6000)
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007c022e800000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007c022eb15000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007c022e400000)
/lib64/ld-linux-x86-64.so.2 (0x00007c022f437000)
liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007c022f392000)
/usr/lib/dotnet/shared/Microsoft.NETCore.App/7.0.16/libcoreclr.so:
linux-vdso.so.1 (0x00007fffb24d5000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007320c345a000)
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007320c2800000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007320c336f000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007320c2400000)
/lib64/ld-linux-x86-64.so.2 (0x00007320c3493000)
/usr/lib/dotnet/shared/Microsoft.NETCore.App/8.0.2/libcoreclr.so:
linux-vdso.so.1 (0x00007ffd91bea000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x0000737a5eff7000)
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x0000737a5e400000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x0000737a5e715000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x0000737a5e000000)
/lib64/ld-linux-x86-64.so.2 (0x0000737a5f030000)
Note that only 6.0.27/libcoreclr.so list the following:
libunwind-x86_64.so.8 => /lib/x86_64-linux-gnu/libunwind-x86_64.so.8
(0x00007c022f3e2000)
libunwind.so.8 => /lib/x86_64-linux-gnu/libunwind.so.8 (0x00007c022f3c6000)
The build logs also indicate to me that the bundled version is used.
[ Other ]
* dotnet6 lists "libunwind-dev [amd64]" as Build-Depends, but the
dotnet7 and dotnet8 packages list "libunwind-dev", (without the
"[amd64]")
* dotnet6 had a patch remove-libunwind-build.patch which is not present
in dotnet7/dotnet8. This patch disabled the bundled libunwind build for
non-arm64 architectures to use the system library. The patch needs to be
adapted for .NET 7 & 8, because the project structure has changed and
the patch does not apply cleanly. Additionally we now build .NET 8 for
s390x and plan to build for ppc64el. So we have to look into how this
could work for that platform.
* A possible solution could be patching
src/runtime/src/coreclr/pal/src/CMakeLists.txt to set
CLR_CMAKE_USE_SYSTEM_LIBUNWIND
** Affects: dotnet7 (Ubuntu)
Importance: Low
Status: Triaged
** Affects: dotnet8 (Ubuntu)
Importance: Low
Status: Triaged
** Also affects: dotnet8 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: dotnet8 (Ubuntu)
Status: New => Triaged
** Changed in: dotnet8 (Ubuntu)
Importance: Undecided => Low
** Bug watch added: github.com/canonical/dotnet-regular-tests/issues #6
https://github.com/canonical/dotnet-regular-tests/issues/6
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https://bugs.launchpad.net/bugs/2065178
Title:
bundled libunwind is used
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