soapyosmo fails to install catalina

[dodavies]

% brew install soapyosmo
==> Installing soapyosmo from pothosware/pothos
==> Downloading https://github.com/pothosware/SoapyOsmo/archive/soapy-osmo-0.2.5.tar.g
Already downloaded: /Users/dodavies/Library/Caches/Homebrew/downloads/2e8197b694f4165dd87a5553dc686d206188a939e12652c05ab515b1b3ab9a80--SoapyOsmo-soapy-osmo-0.2.5.tar.gz
==> cmake ..
==> make install
Last 15 lines from /Users/dodavies/Library/Logs/Homebrew/soapyosmo/02.make:
/usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++ -DNDEBUG -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -bundle -Wl,-headerpad_max_install_names -flat_namespace -o librfspaceSupport.so CMakeFiles/rfspaceSupport.dir/gr-osmosdr/lib/rfspace/rfspace_source_c.cc.o CMakeFiles/rfspaceSupport.dir/register_rfspace.cc.o CMakeFiles/rfspaceSupport.dir/Version.cpp.o libSoapyOsmoSDR.0.2.4.dylib /usr/local/lib/libboost_thread-mt.dylib /usr/local/lib/libboost_system-mt.dylib /usr/local/lib/libSoapySDR.dylib
Undefined symbols for architecture x86_64:
"boost::chrono::steady_clock::now()", referenced from:
void boost::this_thread::sleep_for<long long, boost::ratio<1l, 1000l> >(boost::chrono::duration<long long, boost::ratio<1l, 1000l> > const&) in rfspace_source_c.cc.o
void boost::this_thread::sleep_for<long long, boost::ratio<1l, 1l> >(boost::chrono::duration<long long, boost::ratio<1l, 1l> > const&) in rfspace_source_c.cc.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [librfspaceSupport.so] Error 1
make[1]: *** [CMakeFiles/rfspaceSupport.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[100%] Linking CXX shared module libmiriSupport.so
/usr/local/Cellar/cmake/3.19.2/bin/cmake -E cmake_link_script CMakeFiles/miriSupport.dir/link.txt --verbose=1
/usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang++ -DNDEBUG -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -bundle -Wl,-headerpad_max_install_names -flat_namespace -o libmiriSupport.so CMakeFiles/miriSupport.dir/gr-osmosdr/lib/miri/miri_source_c.cc.o CMakeFiles/miriSupport.dir/register_miri.cc.o CMakeFiles/miriSupport.dir/Version.cpp.o /usr/local/lib/libmirisdr.dylib libSoapyOsmoSDR.0.2.4.dylib /usr/local/lib/libboost_thread-mt.dylib /usr/local/lib/libboost_system-mt.dylib /usr/local/lib/libSoapySDR.dylib
[100%] Built target miriSupport
make: *** [all] Error 2