Compile error

[PA8E]

When I try to compile SoapyAirspyHF, I get the following error:
make
[ 25%] Linking CXX shared module libairspyhfSupport.so
/usr/bin/ld: CMakeFiles/airspyhfSupport.dir/Settings.cpp.o:(.data.rel.ro._ZTV13SoapyAirspyHF[_ZTV13SoapyAirspyHF]+0x148): undefined reference to SoapySDR::Device::hasIQBalanceMode(int, unsigned long) const' /usr/bin/ld: CMakeFiles/airspyhfSupport.dir/Settings.cpp.o:(.data.rel.ro._ZTV13SoapyAirspyHF[_ZTV13SoapyAirspyHF]+0x150): undefined reference to SoapySDR::Device::setIQBalanceMode(int, unsigned long, bool)'
/usr/bin/ld: CMakeFiles/airspyhfSupport.dir/Settings.cpp.o:(.data.rel.ro._ZTV13SoapyAirspyHF[_ZTV13SoapyAirspyHF]+0x158): undefined reference to SoapySDR::Device::getIQBalanceMode(int, unsigned long) const' /usr/bin/ld: CMakeFiles/airspyhfSupport.dir/Streaming.cpp.o: in function SoapyAirspyHF::getStreamFormats[abi:cxx11](int, unsigned long) const':
Streaming.cpp:(.text+0x777): undefined reference to SoapySDR::ConverterRegistry::listTargetFormats(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)' /usr/bin/ld: CMakeFiles/airspyhfSupport.dir/Streaming.cpp.o: in function SoapyAirspyHF::setupStream(int, std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, std::vector<unsigned long, std::allocator > const&, std::map<std::__cxx11::basic_string<char, std::char_traits, std::allocator >, std::__cxx11::basic_string<char, std::char_traits, std::allocator >, std::less<std::__cxx11::basic_string<char, std::char_traits, std::allocator > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits, std::allocator > const, std::__cxx11::basic_string<char, std::char_traits, std::allocator > > > > const&)':
Streaming.cpp:(.text+0xc35): undefined reference to SoapySDR::ConverterRegistry::listSourceFormats(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)' /usr/bin/ld: Streaming.cpp:(.text+0xc94): undefined reference to SoapySDR::ConverterRegistry::getFunction(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, SoapySDR::ConverterRegistry::FunctionPriority const&)'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/airspyhfSupport.dir/build.make:116: libairspyhfSupport.so] Error 1
make[1]: *** [CMakeFiles/Makefile2:73: CMakeFiles/airspyhfSupport.dir/all] Error 2
make: *** [Makefile:130: all] Error 2

Ubuntu 19.10, Linux 5.3.0-51-generic #44-Ubuntu SMP Wed Apr 22 21:09:44 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

[guruofquality]

My first guess is that the development headers are newer than the development libraries. Do you have multiple development sources installed for SoapySDR in the standard search paths? See https://github.com/pothosware/SoapySDR/wiki/ConfigGuide#avoid-simultaneous-installs