Missing ncurses in Pine compile?

[Dwight Johnson <dwj@aaronsrod.com>]

On my Debian 2.2r2 system I have:

libncurses5
ncurses-base
ncurses-bin

all installed.

Yet, when attempting to compile Pine 4.21 (from the .deb source package
in nonfree), I get the following compile error:

cc    -g -DDEBUG   -DLNX -DSYSTYPE=\"LNX\" -DMOUSE -o pine addrbook.o adrbkcmd.o adrbklib.o args.o bldaddr.o context.o filter.o folder.o help.o helptext.o imap.o init.o mailcap.o mailcmd.o mailindx.o mailpart.o mailview.o newmail.o other.o
pine.o reply.o screen.o send.o signals.o status.o strings.o takeaddr.o os.o date.c  ../pico/libpico.a ../c-client/c-client.a  -lncurses `cat ../c-client/LDFLAGS`
/usr/bin/ld: cannot find -lncurses
collect2: ld returned 1 exit status
make: *** [pine] Error 1

What can I do to successfully compile this package?

Thanks in advance,
Dwight