Someone mentioned this on GNU Radio redmine recently, and I've encountered it myself today. http://gnuradio.org/redmine/issues/750#note-5 Relevant lines from the log: /usr/bin/x86_64-pc-linux-gnu-g++ -march=core-avx2 -O2 -pipe -msahf -mmovbe --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=3072 -mtune=core-avx2 -fstack-protector -std=c++98 -fvisibility=hidden -Wsign-compare -Wall -Wno-uninitialized -Wl,-O1 -Wl,--as-needed CMakeFiles/gnuradio-config-info.dir/gnuradio-config-info.cc.o -o gnuradio-config-info -rdynamic ../lib/libgnuradio-runtime-3.7.10.so.0.0.0 -lboost_date_time-mt -lboost_program_options-mt -lboost_filesystem-mt -lboost_system-mt -lboost_regex-mt -lboost_thread-mt ../lib/pmt/libgnuradio-pmt-3.7.10.so.0.0.0 -lboost_date_time-mt -lboost_program_options-mt -lboost_filesystem-mt -lboost_system-mt -lboost_regex-mt -lboost_thread-mt ../../volk/lib/libvolk.so.1.3 -ldl -lorc-0.4 -llog4cpp -lrt -Wl,-rpath,/var/tmp/portage/net-wireless/gnuradio-3.7.10/work/gnuradio-3.7.10_build/gnuradio-runtime/lib:/var/tmp/portage/net-wireless/gnuradio-3.7.10/work/gnuradio-3.7.10_build/gnuradio-runtime/lib/pmt:/var/tmp/portage/net-wireless/gnuradio-3.7.10/work/gnuradio-3.7.10_build/volk/lib: ../lib/libgnuradio-runtime-3.7.10.so.0.0.0: error: undefined reference to 'pthread_setaffinity_np' ../lib/libgnuradio-runtime-3.7.10.so.0.0.0: error: undefined reference to 'pthread_sigmask' collect2: error: ld returned 1 exit status gnuradio-runtime/apps/CMakeFiles/gnuradio-config-info.dir/build.make:111: recipe for target 'gnuradio-runtime/apps/gnuradio-config-info' failed make[2]: *** [gnuradio-runtime/apps/gnuradio-config-info] Error 1 make[2]: Leaving directory '/var/tmp/portage/net-wireless/gnuradio-3.7.10/work/gnuradio-3.7.10_build'
Created attachment 443526 [details] emerge --info '=net-wireless/gnuradio-3.7.10::gentoo'
Created attachment 443528 [details] emerge -pqv '=net-wireless/gnuradio-3.7.10::gentoo'
Created attachment 443530 [details] build.log.gz It was past 1M limit to be attached as a plain text file, sorry
Can you try with ld.bfd instead of gold?
Huh, I've forgot I ever enabled it. It actually builds fine with ld.bfd.
If this is still reproducible on 3.8.2.0 please reopen