Python3 "_sqlite3" module cannot be found at build time.

Buildroot kjn 1 participant 1 message Nov 18, 2020

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kjn

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2020-11-18 03:34 UTC #0 lore raw

           Product: buildroot
           Version: 2020.05
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other

Correct dependencies are selected for build, however the build fails looking for "_sqlite3".

However can confirm that if the offending package requiring is deselected, _sqlite3 is available on the target.

/Traceback (most recent call last):
File "setup.py", line 5, in <module>
import diskcache
File
"/home/buildroot-2020.05.1/output/build/python-diskcache-5.1.0/diskcache/__init__.py", line 9, in <module>

    from .core import (

File
"/home/buildroot-2020.05.1/output/build/python-diskcache-5.1.0/diskcache/core.py",
line 15, in <module>
import sqlite3
File
"/home/buildroot-2020.05.1/output/host/arm-buildroot-linux-uclibcgnueabihf/sysroot/usr/lib/python3.8/sqlite3/__init__.py", line 23, in <module>
from sqlite3.dbapi2 import *
File
"/home/buildroot-2020.05.1/output/host/arm-buildroot-linux-uclibcgnueabihf/sysroot/usr/lib/python3.8/sqlite3/dbapi2.py", line 27, in <module>
from _sqlite3 import *
ModuleNotFoundError: No module named '_sqlite3'
make[1]: *** [package/pkg-generic.mk:269:
/home/buildroot-2020.05.1/output/build/python-diskcache-5.1.0/.stamp_built]
Error 1
make: *** [Makefile:84: _all] Error 2/

Both the host and target are setup with python 3.8.5 (and also python 2.7 in case of the host -- ubuntu 20.04).
Sqlite3 is installed and functional on both as a core module of 3.8.

*From the target (ARM-Cortex A7 Board - compiled sans diskcache):*

/# python
Python 3.8.5 (default, Nov 13 2020, 21:11:28)
[GCC 8.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

Quoted 3 lines

Quoted 3 lines
Quoted 3 lines
import sqlite3
import _sqlite3
/

*From the host (Ubuntu 20.04 - VM):*

/kjn at ubuntu:~/buildroot-2020.05.1$ python3
Python 3.8.5 (default, Jul 28 2020, 12:59:40)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

Quoted 3 lines

Quoted 3 lines
Quoted 3 lines
import _sqlite3
import sqlite3

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