[OE-core] ovmf fails when python sqlite module is not installed on host

[Ahsan, Noor]

Hello,

While building ovmf recipe I faced one issue regarding sqlite python module. The recipe is trying to access host python packages in order to build it. On my system I had multiple puthon version installed and the one which Ovmf was picking did not had sqlite module installed so I got this error

Copying $EDK_TOOLS_PATH/Conf/target.template
     to /var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/git/Conf/target.txt
using prebuilt tools
Running edk2 build for OvmfPkgX64
Traceback (most recent call last):
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/BinWrappers/PosixLike/../../Source/Python/build/build.py", line 42, in <module>
    from AutoGen.AutoGen import *
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/Source/Python/AutoGen/AutoGen.py", line 36, in <module>
    from GenFds.FdfParser import *
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/Source/Python/GenFds/FdfParser.py", line 21, in <module>
    import Fd
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/Source/Python/GenFds/Fd.py", line 19, in <module>
    import Fv
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/Source/Python/GenFds/Fv.py", line 24, in <module>
    import AprioriSection
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/Source/Python/GenFds/AprioriSection.py", line 21, in <module>
    import FfsFileStatement
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/Source/Python/GenFds/FfsFileStatement.py", line 29, in <module>
    from GuidSection import GuidSection
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/Source/Python/GenFds/GuidSection.py", line 30, in <module>
    from GenFds import FindExtendTool
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/Source/Python/GenFds/GenFds.py", line 25, in <module>
    from Workspace.WorkspaceDatabase import WorkspaceDatabase
  File "/var/mentor/sfarooq/MEL/181206_1816/myproject_uno/workspace/build/tmp/work/corei7-64-mel-linux/ovmf/git-r0/recipe-sysroot-native/usr/bin/edk2_basetools/BaseTools/Source/Python/Workspace/WorkspaceDatabase.py", line 18, in <module>
    import sqlite3
  File "/usr/local/lib/python2.7/sqlite3/__init__.py", line 24, in <module>
    from dbapi2 import *
  File "/usr/local/lib/python2.7/sqlite3/dbapi2.py", line 28, in <module>
    from _sqlite3 import *
ImportError: No module named _sqlite3
WARNING: exit code 1 from a shell command.

I also inherited the recipe with  python3native but it is still accessing host python. Can you guide me how we can modify this recipe so that it start using build system python3 packages.

Noor
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