[...]

checking sys/devpoll.h usability... no
checking sys/devpoll.h presence... no
checking for sys/devpoll.h... no
checking sys/epoll.h usability... Terminated
ended at: Thu May  6 10:27:48 2021, done in 0:00:13.674168
error: No files produced.
+ chmod -R u+rwX /tmp/B.bpi3mguk/BUILD
yes
checking sys/epoll.h presence... chmod: cannot access '/tmp/B.bpi3mguk/BUILD/Python-3.9.4/conftest.o': No such file or directory
yes
checking for sys/epoll.h... yes
checking sys/poll.h usability... + rm -rf /tmp/B.bpi3mguk
yes
checking sys/poll.h presence... ./configure[8011]: can't create temporary file : No such file or directory
sed: can't read conftest.c: No such file or directory
no
configure: WARNING: sys/poll.h: accepted by the compiler, rejected by the preprocessor!
configure: WARNING: sys/poll.h: proceeding with the compiler's result
checking for sys/poll.h... yes
./configure[8011]: can't create temporary file : No such file or directory
checking sys/audioio.h usability... ./configure[8011]: can't create temporary file : No such file or directory
sed: can't read conftest.c: No such file or directory
no
checking sys/audioio.h presence... ./configure[8011]: can't create temporary file : No such file or directory
sed: can't read conftest.c: No such file or directory
no
checking for sys/audioio.h... no
checking sys/xattr.h usability... ./configure[8011]: can't create temporary file : No such file or directory
sed: can't read conftest.c: No such file or directory
no
checking sys/xattr.h presence... ./configure[8011]: can't create temporary file : No such file or directory
sed: can't read conftest.c: No such file or directory
no
checking for sys/xattr.h... no
checking sys/bsdtty.h usability... ./configure[8011]: can't create temporary file : No such file or directory
sed: can't read conftest.c: No such file or directory
no
checking sys/bsdtty.h presence... ./configure[8011]: can't create temporary file : No such file or directory
sed: can't read conftest.c: No such file or directory
no
checking for sys/bsdtty.h... no
checking sys/event.h usability... ./configure[8011]: can't create temporary file : No such file or directory
rm: cannot remove '/tmp/B.bpi3mguk/BUILD/Python-3.9.4': Directory not empty
sed: can't read conftest.c: No such file or directory
no
checking sys/event.h presence... ./configure[8011]: can't create temporary file : No such file or directory
Begin-TLD-Builder-Info
Build-Time: user:2.37s sys:0.85s real:16.22s (faults io:46 non-io:67917)
End-TLD-Builder-Info