On 11/7/19 2:01 PM, hal wrote:
>    172609      0 lrwxrwxrwx   1 root     root           31 Feb  6  2019
> /usr/include/sys/types.h -> ../x86_64-linux-gnu/sys/types.h


i think the problem is there.. symlink(?) to non-existent file..

in a debian stretch system (got no ascii with spamassassin available),
this is a regular file, and /usr/include/sys/types.h doesn't exist..

# dpkg -S sys/types.h
libc6-dev:amd64: /usr/include/x86_64-linux-gnu/sys/types.h


maybe reinstall libc6-dev ??