[Mimedefang] embperl.c issue

[J.P van Oyen]

Anyone seen this before :

gcc -g -O2 -Wall -Wstrict-prototypes  -Dbool=char -DHAS_BOOL
-I/usr/local/include  -I/usr/lib/perl5/i386-linux/CORE  -pthread
-D_POSIX_PTHREAD_SEMANTICS -DEMBED_PERL -DPERL_PATH=\"/usr/bin/perl\"
-DMIMEDEFANG_PL=\"/usr/local/bin/mimedefang.pl\" -DRM=\"/bin/rm\"
-DVERSION=\"2.48\" -DSPOOLDIR=\"/var/spool/MIMEDefang\"
-DQDIR=\"/var/spool/MD-Quarantine\" -DCONFDIR=\"/etc/mail\"
-I../sendmail-8.12.10/include -c -o embperl.o embperl.c
embperl.c:21: warning: function declaration isn't a prototype
embperl.c: In function `num_open_descriptors':
embperl.c:38: warning: implicit declaration of function `fcntl'
embperl.c:38: `F_GETFL' undeclared (first use in this function)
embperl.c:38: (Each undeclared identifier is reported only once
embperl.c:38: for each function it appears in.)
make: *** [embperl.o] Error 1

I am seeing this on a machine that now runs 2.39 but can not get updated ?

Hints are appriciated.

Summary of my perl5 (5.0 patchlevel 5 subversion 3)
egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)