The error is:

make[2]: Entering directory `/usr/src/libnl/src'
  CCLD   nl-pktloc-lookup
/usr/bin/ld: cannot find -lnl-route
collect2: error: ld returned 1 exit status
make[2]: *** [nl-pktloc-lookup] Error 1
make[2]: Leaving directory `/usr/src/libnl/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/src/libnl/src'
make: *** [all-recursive] Error 1

The compilation is tried on Debian Wheezy.
The osmocom-linux-kernel/headers (kernel: ​git://dect.osmocom.org/git/linux-2.6.git) are successfully compiled and installed as in manual.
I have tried also all native libnl debian-packages with source. Unfortunately they are not suitable for libdect.
Please help.

Best regards.