Specify a source directory to (re-)generate a build system for it in the
current working directory.  Specify an existing build directory to
re-generate its build system.

Run 'cmake --help' for more information.

user@ubuntu:~/bladeRF/build$ cmake -DCMAKE_BUILD_TYPE=Debug -DINSTALL_UDEV_RULES=ON ../ -DBLADERF_GROUP=bladerf
-- The C compiler identification is GNU 5.4.0
-- The CXX compiler identification is GNU 5.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Check if the system is big endian
-- Searching 16 bit integer
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of unsigned short
-- Check size of unsigned short - done
-- Using unsigned short
-- Check if the system is big endian - little endian
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")
-- Checking libc version...
-- libc version: 2.23

--
CMake Error at host/libraries/libbladeRF/CMakeLists.txt:104 (message):
  No libbladeRF backends are enabled.  Please enable one or more backends.


-- Configuring incomplete, errors occurred!
See also "/home/user/bladeRF/build/CMakeFiles/CMakeOutput.log".
See also "/home/user/bladeRF/build/CMakeFiles/CMakeError.log".
user@ubuntu:~/bladeRF/build$