First run your build script then grabe /tmp/htk/HLMTools/Makefile, on line 77 remove 8 spaces and hit tab, drop file in your build directory and remove and cat it in after configure problem solve ! see part of my build script

./configure    --prefix=$PKG/usr/ \
        --sysconfdir=/etc \
        --localstatedir=/var \
        --libdir=/usr/lib${LIBDIRSUFFIX} \
        --disable-static \
        --mandir=/usr/man \
        --build=$CHOST-mos-linux

# this is were you remove and add Makefile
rm /tmp/htk/HLMTools/Makefile || exit 1
cat $CWD/Makefile > /tmp/htk/HLMTools/Makefile || exit 1

make $JOBS
make all
make install

Make with gcc-4.5.3 fails but I build it with older version of gcc (have backwards compat libs since 01-01-2000! For those depleted software)

Hope my english is good enought for you to grab it