Octave compilation error

[Himanshu B. Dave]

towards the end of compilation:
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make[3]: `libcruft.so.2.9.15' is up to date.
make[3]: Leaving directory `/home/hbd2/octave-
2.9.15/libcruft'
make[2]: Leaving directory `/home/hbd2/octave-2.9.15/libcruft'
make -C liboctave all
make[2]: Entering directory `/home/hbd2/octave-2.9.15/liboctave'
make[2]: Leaving directory `/home/hbd2/octave-
2.9.15/liboctave'
make -C src all
make[2]: Entering directory `/home/hbd2/octave-2.9.15/src'
making defaults.h from defaults.h.in
defaults.h is unchanged
making oct-conf.h
 from oct-conf.h.in
oct-conf.h is unchanged
g++  -I. -I.. -I../liboctave -I../src -I../libcruft/misc   -DHAVE_CONFIG_H -mieee-fp -Wall -W -Wshadow -Wold-style-cast -g -O2 -rdynamic \
        -L..  -fPIC  -o octave \
        main.o  \
        -L../liboctave -L../libcruft -L../src -Wl,-rpath -Wl,/usr/local/lib/octave-2.9.15 \
        -loctinterp -loctave  -lcruft    \
             \
            \
         -lreadline  -lncurses -ldl -lm  -L/usr/lib/gcc/i486-slackware-linux/4.1.2 -L/usr/lib/gcc/i486-slackware-linux/4.1.2/../../../../i486-slackware-linux/lib -L/usr/lib/gcc/i486-slackware-linux/4.1.2/../../.. -lgfortranbegin -lgfortran -lm
../libcruft/libcruft.so: undefined reference to `dormrz_'
collect2: ld returned 1 exit status
make[2]: *** [octave] Error 1
make[2]: Leaving directory `/home/hbd2/octave-2.9.15/src'
make[1]: *** [src] Error 2
make[1]: Leaving directory `/home/hbd2/octave-2.9.15'
make: *** [all] Error 2
address@hidden:~/octave-2.9.15:$
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CPU: Intel Celeron 2.84 GHz
Slackware 12.0 Linux kernel 2.6.22

Can't find the reason for the error.
Please help.

-- HBDave