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hedmo
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Joined: 29 Aug 2009
Posts: 1331
Location: sweden
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 Posted: Sat Jul 13, 2024 6:26 pm Post subject: broken emerge again(solved) |
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hi .
after failing update emerge broke and i need help . at the moment i am at : https://wiki.gentoo.org/wiki/Project:Portage/Fixing_broken_portage
but still no go . here is the output :
| Code: |
myt30 /tmp/portage # bin/emerge --info
Traceback (most recent call last):
File "/tmp/portage/bin/emerge", line 51, in <module>
from _emerge.main import emerge_main
File "/tmp/portage/lib/_emerge/main.py", line 24, in <module>
from portage.sync import _SUBMODULE_PATH_MAP
File "/tmp/portage/lib/portage/sync/__init__.py", line 9, in <module>
from portage.sync.controller import SyncManager
File "/tmp/portage/lib/portage/sync/controller.py", line 21, in <module>
from portage.package.ebuild.doebuild import _check_temp_dir
File "/tmp/portage/lib/portage/package/ebuild/doebuild.py", line 115, in <module>
from portage.util.compression_probe import _compressors
File "/tmp/portage/lib/portage/util/compression_probe.py", line 4, in <module>
import ctypes
File "/usr/lib/python3.12/ctypes/__init__.py", line 8, in <module>
from _ctypes import Union, Structure, Array
ImportError: /usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-arm-linux-gnueabihf.so: undefined symbol: ffi_type_longdouble, version LIBFFI_BASE_8.0
myt30 /tmp/portage
# |
regards hedmo
Last edited by hedmo on Mon Jul 15, 2024 5:33 am; edited 1 time in total |
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bstaletic
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Joined: 05 Apr 2014
Posts: 361
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| Posted: Sat Jul 13, 2024 6:55 pm Post subject: |
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From the error, it looks like it is your python that is broken, rather than portage. To confirm, try: | Code: | $ python3.12 -c 'print(__import__("_ctypes").__file__)'
$ nm -CD `!!` | grep ffi_type_longdouble |
and post the output.
The first command should output /usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-arm-linux-gnueabihf.so.
The second command should output U ffi_type_longdouble@LIBFFI_BASE_8.0.
If the second command outputs nothing, you need a working python, rather than a working portage. |
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hedmo
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Joined: 29 Aug 2009
Posts: 1331
Location: sweden
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| Posted: Sat Jul 13, 2024 7:05 pm Post subject: |
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| bstaletic wrote: | From the error, it looks like it is your python that is broken, rather than portage. To confirm, try: | Code: | $ python3.12 -c 'print(__import__("_ctypes").__file__)'
$ nm -CD `!!` | grep ffi_type_longdouble |
and post the output.
The first command should output /usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-arm-linux-gnueabihf.so.
The second command should output U ffi_type_longdouble@LIBFFI_BASE_8.0.
If the second command outputs nothing, you need a working python, rather than a working portage. |
bstaletic
yes i think it is a broken python but the same time emerge is still broken. here is the output of the commands :
| Code: |
myt30 /tmp/portage # python3.12 -c 'print(__import__("_ctypes").__file__)'
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: /usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-arm-linux-gnueabihf.so: undefined symbol: ffi_type_longdouble, version LIBFFI_BASE_8.0
myt30 /tmp/portage # nm -CD `!!` | grep ffi_type_longdouble
nm -CD `python3.12 -c 'print(__import__("_ctypes").__file__)'` | grep ffi_type_longdouble
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: /usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-arm-linux-gnueabihf.so: undefined symbol: ffi_type_longdouble, version LIBFFI_BASE_8.0
nm: 'a.out': No such file
myt30 /tmp/portage #
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regards hedmo |
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bstaletic
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Joined: 05 Apr 2014
Posts: 361
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| Posted: Sat Jul 13, 2024 7:14 pm Post subject: |
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Okay, let's avoid using python...
| Code: | | nm -CD /usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-arm-linux-gnueabihf.so | grep longdouble |
That should output | Code: | | U ffi_type_longdouble@LIBFFI_BASE_8.0 |
, which is the symbol that your python is failing to find.
The U symbol type stands for "undefined" - it needs to be resolved by one of the dependencies.
| Code: | | ldd '/usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-x86_64-linux-gnu.so' |
That will output the dependencies of the `_ctypes` module. Something like this: | Code: | linux-vdso.so.1 (0x00007ffdc11bf000)
libffi.so.8 => /usr/lib64/libffi.so.8 (0x00007f028f70b000)
libc.so.6 => /lib64/libc.so.6 (0x00007f028f52c000)
/lib64/ld-linux-x86-64.so.2 (0x00007f028f748000) |
You can see that libffi.so.8, which looks interesting.
| Code: | | nm -CD /usr/lib64/libffi.so.8 | grep longdouble |
That should output something like
| Code: | 000000000000bae0 D ffi_type_complex_longdouble@@LIBFFI_COMPLEX_8.0
0000000000009000 R ffi_type_longdouble@@LIBFFI_BASE_8.0 |
The second line is the symbol that python is looking for. The D stands for "initialized data section".
Post all outputs and let's see where your stuff differs from mine. |
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hedmo
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Joined: 29 Aug 2009
Posts: 1331
Location: sweden
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| Posted: Sat Jul 13, 2024 7:20 pm Post subject: |
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bstaletic
the second commad fails . here is the outputs :
| Code: |
myt30 /tmp/portage # nm -CD /usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-arm-linux-gnueabihf.so | grep longdouble
U ffi_type_longdouble@LIBFFI_BASE_8.0
myt30 /tmp/portage # ldd '/usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-x86_64-linux-gnu.so'
ldd: /usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-x86_64-linux-gnu.so: No such file or directory
myt30 /tmp/portage # nm -CD /usr/lib64/libffi.so.8 | grep longdouble
nm: '/usr/lib64/libffi.so.8': No such file
myt30 /tmp/portage #
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regards hedmo |
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bstaletic
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Joined: 05 Apr 2014
Posts: 361
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| Posted: Sat Jul 13, 2024 7:23 pm Post subject: |
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Ah, it failed because you're on an ARM system and your _ctypes has a different suffix than my amd64 one.
Here's the correct path: /usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-arm-linux-gnueabihf.so
Please repeat the steps with the correct path. |
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hedmo
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Joined: 29 Aug 2009
Posts: 1331
Location: sweden
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| Posted: Sat Jul 13, 2024 7:39 pm Post subject: |
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bstaletic
the second commad gives :
| Code: |
myt30 /tmp/portage # ldd '/usr/lib/python3.12/lib-dynload/_ctypes.cpython-312-arm-linux-gnueabihf.so'
linux-vdso.so.1 (0xbeff6000)
libffi.so.8 => /usr/lib/libffi.so.8 (0xb6efb000)
libc.so.6 => /lib/libc.so.6 (0xb6d88000)
/lib/ld-linux-armhf.so.3 (0xb6f3d000)
libgcc_s.so.1 => /usr/lib/gcc/armv7a-unknown-linux-gnueabihf/14/libgcc_s.so.1 (0xb6d7c000)
myt30 /tmp/portage #
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but the third command gives me nothing . i think the path is :
| Code: |
myt30 /tmp/portage # nm -CD /usr/lib/libffi.so.8 | grep longdouble
myt30 /tmp/portage #
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because of :
| Code: |
myt30 /tmp/portage # ls /usr
armv7a-hardfloat-linux-gnueabi bin include libexec portage share tmp
armv7a-unknown-linux-gnueabihf false lib local sbin src
myt30 /tmp/portage #
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regards hedmo |
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bstaletic
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Joined: 05 Apr 2014
Posts: 361
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| Posted: Sat Jul 13, 2024 7:57 pm Post subject: |
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Well... either your libffi is broken, or your python is broken.
Do other things that depend on libffi work? You can get a list of things depending on libffi with this: | Code: | | grep -F libffi.so.8 /var/db/pkg/*/*/NEEDED |
Have you compiled python yourself, or did you use a binhost? If you don't remember, look in /var/db/pkg/dev-lang/python-3.12.*, for files BUILD_TIME and BINPKGMD5.
Former indicates you have compiled it and latter that you have installed the package from a bihost.
Have you compiled libffi yourself?
Either way, I would try building python manually, somewhere, then putting that in my PATH and its libpython in my LD_LIBRARY_PATH. Then, with that python, I'd try to import _ctypes. That should work.
If it does, we can figure out how to repair python without touching portage.
Also... post the output of the grep command from the start of this post. |
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hedmo
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Joined: 29 Aug 2009
Posts: 1331
Location: sweden
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| Posted: Sun Jul 14, 2024 8:14 am Post subject: |
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bstaletic
thanks for helping me yesterday. i had a broken python . i solved it by using two gentoo wiki :
i followed the Handbook:AMD64 like i was on a livecd but added two command before chrooting :
| Code: |
# mkdir /mnt/gentoo/broken
mount -o bind / /mnt/gentoo/broken
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now i was in a chrooted environment with working python , emerge and my broken system at /broken  . time to build a binary package ...
i followed Raspberry_Pi/Installation at section : 'Compiling using chroot' but change the commands to this :
| Code: |
# quickpkg python
# cd /broken
# ROOT=$PWD/ emerge --usepkgonly --oneshot --nodeps --jobs=1 --quiet-build=n python
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and now i have installed a working python on my broken system . time to check :
| Code: |
# emerge --info
Portage 3.0.65 (python 3.12.3-final-0, default/linux/arm/23.0/split-usr/armv7a_hf/desktop/plasma, gcc-13, glibc-2.39-r9, 6.9.0+ armv7l)
=================================================================
...
#
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best regards hedmo |
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