The following are my (very rough) notes from installing Img 1.2.4 on my
FreeBSD system (FreeBSD 4.4-RELEASE).  They may or may not be helpful,
but I'll provide them just in case.....

NOTE:  the normal make failed...had to use gmake instead.

First, run configure with the following options:

./configure --with-tcl=/usr/local/lib/tcl8.3  --with-tk=/usr/local/lib/tk8.3

Then, edit Makefile to change the following variables:

TCL_INC_DIR		=	/usr/local/include/tcl8.3
TK_INC_DIR		=	/usr/local/include/tk8.3

PRIVATE_INC	=	-I$(shell echo "$(TCL_INC_DIR)/generic" | sed -e 's|/cygdrive/\(.\)/|\1:/|')	\
			-I$(shell echo "$(TCL_INC_DIR)/unix" | sed -e 's|/cygdrive/\(.\)/|\1:/|')	\
			-I$(shell echo "$(TK_INC_DIR)/generic" | sed -e 's|/cygdrive/\(.\)/|\1:/|')	\
			-I$(shell echo "$(TK_INC_DIR)/unix" | sed -e 's|/cygdrive/\(.\)/|\1:/|')


on/about line 107 (TCL_SHARED_LIBS):  add -L/usr/local/lib