compiling error

I get the followig error although TK is installed

---------start--------
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory `/mnt/hdb/src/postgresql-7.0.3/src/bin/pgaccess'
make[2]: Entering directory `/mnt/hdb/src/postgresql-7.0.3/src/bin/pgtclsh'
gcc -I../../include -I../../backend -O2 -Wall -Wmissing-prototypes -Wmissi
ng-declarations -I/usr/X11R6/include -I../../interfaces/libpgtcl -DHAVE_UNIS
TD_H=1 -DHAVE_LIMITS_H=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TIME_H=1 -DTIME_WITH_SY
S_TIME=1 -DHAVE_PW_GECOS=1 -o pgtksh pgtkAppInit.o \
-L../../interfaces/libpgtcl -lpgtcl -L../../interfaces/libpq -lpq -L/usr/X
11R6/lib -L/usr/local/lib -ltk8.3 -L/usr/X11R6/lib -lX11 -ldl -lieee -lm \
-L/usr/local/lib -ltcl8.3 -lX11 -lcrypt -lnsl -ldl -lm -lutil -lreadline
-lncurses -export-dynamic
pgtkAppInit.o: In function `main':
pgtkAppInit.o(.text+0x11): undefined reference to `Tk_Main'
collect2: ld returned 1 exit status
make[2]: *** [pgtksh] Error 1
make[2]: Leaving directory `/mnt/hdb/src/postgresql-7.0.3/src/bin/pgtclsh'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/mnt/hdb/src/postgresql-7.0.3/src/bin'
make: *** [all] Error 2
--------end-----------

thx for any help

cm