[Exim] Problem installing exim-4.41

I should be grateful for any help in resolving the following problem,
which I've encountered when trying to install exim-4.41. I have been
using version 4.12 hitherto. I'm running Debian-3.0 with kernel-2.6.7
on a PC.

On issuing the "make" command, the following messages appear:

rfc2047.o(.text+0x3a9): In function `rfc2047_decode2':
: undefined reference to `libiconv_open'
rfc2047.o(.text+0x47f): In function `rfc2047_decode2':
: undefined reference to `libiconv'
rfc2047.o(text+0x574): In function `rfc2047_decode2':
: uundefined reference to `libiconv_close'
collect2: ld returned 1 exit status
make [1] ***[exim] Error 1
make [1] Leaving directory `/usr/local/exim-4.41/build-Linux-i386'
make *** [go] Error 1

I have libiconv-1.9.1 and the line "HAVE_ICONV=yes" in
~/Local/Makefile is uncommented.

Thanks in advance for any advice.

--
Robin Cosby