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While enabling multilib, call setup.py failed
...
|tmp-glibc/work/core2-32-oemllib32-linux/lib32-tensorflow-estimator/1.13-r0/
recipe-sysroot-native/usr/lib/python3.7/sysconfig.py", line 425, in _init_posix
|    _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
|ModuleNotFoundError: No module named '_sysconfigdata'
...

Add python3 to target DEPENDS could fix the issue
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>