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Hi,
I compiled Python 3.7 using PGO+LTO with "make && make install", but it seems like it lacks the _sysconfigdata module.
Moreover, I don't see any "Makefile" file in the installed directory, so the "~/installed/3.7/bin/python3 -S -m sysconfig --generate-posix-vars" command fails on trying to import _sysconfigdata_m_linux_x86_64-linux-gnu ... 
$ find /home/haypo/installed/3.7 -name "Makefile"
<nothing>
Is it correct to use "make && make install" using PGO?
cd ~/cpython
make distclean ||:
./configure --enable-optimizations --with-lto --prefix=/home/haypo/installed/3.7
make clean
make
make install
haypo@speed-python$ ~/installed/3.7/bin/python3 
Failed to import the site module
Traceback (most recent call last):
 File "/home/haypo/installed/3.7/lib/python3.7/site.py", line 544, in <module>
 main()
 File "/home/haypo/installed/3.7/lib/python3.7/site.py", line 530, in main
 known_paths = addusersitepackages(known_paths)
 File "/home/haypo/installed/3.7/lib/python3.7/site.py", line 282, in addusersitepackages
 user_site = getusersitepackages()
 File "/home/haypo/installed/3.7/lib/python3.7/site.py", line 258, in getusersitepackages
 user_base = getuserbase() # this will also set USER_BASE
 File "/home/haypo/installed/3.7/lib/python3.7/site.py", line 248, in getuserbase
 USER_BASE = get_config_var('userbase')
 File "/home/haypo/installed/3.7/lib/python3.7/sysconfig.py", line 601, in get_config_var
 return get_config_vars().get(name)
 File "/home/haypo/installed/3.7/lib/python3.7/sysconfig.py", line 550, in get_config_vars
 _init_posix(_CONFIG_VARS)
 File "/home/haypo/installed/3.7/lib/python3.7/sysconfig.py", line 421, in _init_posix
 _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
ModuleNotFoundError: No module named '_sysconfigdata_m_linux_x86_64-linux-gnu'