[SOLVED] rpi3 broken emerge - libffi

Message

krotuss · Post by **krotuss** » Fri Sep 23, 2022 7:32 pm

Hi, update of world at fairly old gentoo system on my rpi3 got interrupted by power outage (not sure if it is the cause) and now emerge complains about missing /usr/lib/libffi.so.7. There is already installed /usr/lib/libffi.so.8 on that system. I was looking at current stage3, but it also contains libffi.so.8. What will be the easiest way to fix this? Is it likely that I will be able to build libffi.so.7 on that system? Which libffi version installed so.7? Or is there a way to use stage3 to somehow fix portage on that system? Thanks.

Post by **NeddySeagoon** » Fri Sep 23, 2022 7:50 pm

krotuss,

dev-libs/libffi is not slotteh so you may not have several versions installed at the same time.
Does your Pi3 have a 32 bit or 64 bit install?

Please post the full command and output including the error message.

Post by **NeddySeagoon** » Fri Sep 23, 2022 7:52 pm

Moved from Portage & Programming to Gentoo on ARM.

The Pi3 is arm or arm64

krotuss · Post by **krotuss** » Fri Sep 23, 2022 7:59 pm

NeddySeagoon wrote:krotuss,
Please post the full command and output including the error message.

Which command do you mean specifically? I currently don't have access to that system, but every emerge command that I have tried fails with python backtrace with complain about missing "/usr/lib/libffi.so.7" at the bottom. It looks like that libffi was updated, but emerge/python/dependencies was not rebuild against newer "/usr/lib/libffi.so.8"

System is 32 bit.

Looks like 811462

krotuss · Post by **krotuss** » Sat Sep 24, 2022 9:03 am

Posting output of emerge command:

Code: Select all

emerge --info
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.9/emerge", line 55, in <module>
    from _emerge.main import emerge_main
  File "/usr/lib/python3.9/site-packages/_emerge/main.py", line 22, in <module>
    from portage.sync import _SUBMODULE_PATH_MAP
  File "/usr/lib/python3.9/site-packages/portage/sync/__init__.py", line 9, in <module>
    from portage.sync.controller import SyncManager
  File "/usr/lib/python3.9/site-packages/portage/sync/controller.py", line 21, in <module>
    from portage.package.ebuild.doebuild import _check_temp_dir
  File "/usr/lib/python3.9/site-packages/portage/package/ebuild/doebuild.py", line 116, in <module>
    from portage.util.compression_probe import _compressors
  File "/usr/lib/python3.9/site-packages/portage/util/compression_probe.py", line 4, in <module>
    import ctypes
  File "/usr/lib/python3.9/ctypes/__init__.py", line 8, in <module>
    from _ctypes import Union, Structure, Array
ImportError: libffi.so.7: cannot open shared object file: No such file or directory

I was able to build libffi-3.3-r2 outside of portage on my affected system and manually placed .so.7 files into /usr/lib. That fixed emerge.