The past few days I have been getting this message from my Devuan ASCII mail host. Anyone know what's up with this?

I've installed the libc6-dev-i386 package to see if it solves it but then I wondered what is spamassasin doing compiling things anyway?


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/etc/cron.daily/spamassassin:
In file included from body_0.xs:2:0:
/usr/lib/x86_64-linux-gnu/perl/5.24/CORE/perl.h:689:23: fatal error: sys/types.h: No such file or directory
 #include <sys/types.h>
                       ^
compilation terminated.
make: *** [body_0.o] Error 1
command 'make PREFIX=/tmp/.spamassassin25658u4PidNtmp/ignored INSTALLSITEARCH=/var/lib/spamassassin/compiled/5.024/3.004002 >>/tmp/.spamassassin25658u4PidNtmp/log' failed: exit 2