[hsflinux] In Debian "Woody"-bf2.4

[Jose Angel Garcia Corona]

*Ihave been using the hsf-driver in Mandrake to my satisfaction for a 
lot of time,
 (hsflinmodem-5.03.03.L3mbsibeta02110300k2.4.18_6mdk-1mdk.i586.rpm version)
*I've changed to Debian 3.0 r1 "Woody" and tried to install the
 hsflinmodem-5.03.27mbsibeta02122600.tar.gz. (METHOD C) (same modem, of 
course)
*I've installed kernel-source-2.4.18 and changed definition of KERNELSRC to:
 KERNELSRC= /usr/src/
 (The "PackageManager" put in this directory: 
kernel-source-2.4.18.tar.bz2 after
   installation, but I wonder if it installed it OK)
*The installation fails.
     Could anyone please tell me what am I doing wrong?
(I've seen some other messages about the same problem, but no results 
for me)

And here is the installing log:
# make install
make[1]: Entering directory
 `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/inf'install -m 644
 linux_ali_smartmc.inf linux_athens.inf linux_hsf.inf linux_hsfi.inf
 linux_intel_smartmc.inf linux_smarthsf.inf linux_via_smartmc.inf
 /etc/hsf/infmake[1]: Leaving directory
 `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/inf' make[1]: Entering
 directory `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/inf2bin'
install -m 755 hsfinf2bin /usr/sbin/hsfinf2bin
make[1]: Leaving directory
 `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/inf2bin'
make[1]: Entering directory
 `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/firm2bin'
install -m 755 hsffirm2bin /usr/sbin/hsffirm2bin
install -m 644 cnxykf.hex /etc/hsf
make[1]: Leaving directory
 `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/firm2bin'
make[1]: Entering directory
 `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/scripts'
install -m 755 hsfconfig hsfstop /usr/sbin
make[1]: Leaving directory
 `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/scripts'
make[1]: Entering directory
 `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/modules'
common.mak:16: *** Is the kernel-source package installed? KERNELSRC 
does not
 point to a proper directory (/usr/src).  Stop.
make[1]: Leaving directory
 `/usr/local/hsflinmodem-5.03.27lnxtbeta03042700/modules'
make: *** [install] Error 2
#