make[1]: Leaving directory `/root/slmodem-2.9.10/modem'
make -C drivers KERNEL_DIR=/usr/src/linux
make[1]: Entering directory `/root/slmodem-2.9.10/drivers'
cc -I/usr/src/linux/include -o kernel-ver kernel-ver.c
kernel-ver.c: In function 'main':
kernel-ver.c:11: error: 'UTS_RELEASE' undeclared (first use in this function)
kernel-ver.c:11: error: (Each undeclared identifier is reported only once
kernel-ver.c:11: error: for each function it appears in.)
make[1]: *** [kernel-ver] Error 1
make[1]: Leaving directory `/root/slmodem-2.9.10/drivers'
make: *** [drivers] Error 2