[issue37733] Fail to build _curses module of Python 3.7.4 on AIX 7.1 using gcc

[LIU YONG]

LIU YONG <ace.liuyong at gmail.com> added the comment:

Additional information of environment 
OS - AIX 7.1 (7100-05-03-1838)
gcc version 6.3.0 (GCC)
ncurses-6.1-2.ppc
ncurses-devel-6.1-2.ppc

I had tried to build Python3.7.3 and Python3.6.9, it hit same errors
It looks like some issue with ncurses version

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versions: +Python 3.6

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