Does not find any radio backend although libraries and headers installed

[mark-orion]

This is what I get on my Ubuntu 16.04 box when I try to build sdr-power. All radio libraries and -dev packages are installed: -- librtlsdr not found, disabling rtlsdr backend -- libhackrf not found, disabling hackrf backend -- libbladeRF not found, disabling bladerf backend CMake Warning at CMakeLists.txt:57 (message): No radio backends available, only dummy backends usable -- Available radio backends: -- BladeRF Library: BLADERF_LIBRARY-NOTFOUND