# ./configure -auto
checking for running kernel version...2.4.21
checking for ptserial...ptserial-2.4.7.c
checking for gcc...3.2.2
searching for kernel includes...found at /usr/src/linux/include
checking for modversions.h.../usr/src/linux/include/linux/modversions.h
checking for kernel_version...In file included from t.c:2:
/usr/src/linux/include/linux/version.h:1:28: linux/rhconfig.h: No such file or directory
./configure: line 1: ./t: No such file or directory
rm: cannot remove `./t': No such file or directory
** error
could not determine a proper UTS_RELEASE

[root@localhost src]# ln -s /usr/src/linux/include/linux/rhconfig.h /usr/include/linux/
[root@localhost src]# ./configure -auto
checking for running kernel version...2.4.21
checking for ptserial...ptserial-2.4.7.c
checking for gcc...3.2.2
searching for kernel includes...found at /usr/src/linux/include
checking for modversions.h.../usr/src/linux/include/linux/modversions.h
checking for kernel_version...UTS_RELEASE is 2.4.21-0.13mdk
detecting your modem...found. Your modem is a i8xx type modem.