On FreeBSD 13 version 2.10 fails to build tests: c++ -DHAVE_CONFIG_H -I. -I..  -I.. -I.. -I../buddy/src \-I../lib -I../lib -fno-omit-frame-pointer -D_THREAD_SAFE -DNDEBUG -O2 -pipe -fno-omit-frame-pointer -fstack-protector-strong -fno-strict-aliasing -fno-omit-frame-pointer   -fvisibility=hidden -fvisibility-inlines-hidden -DSPOT_BUILD -std=c++17 -g -O3 -ffast-math -fstrict-aliasing -fomit-frame-pointer -pthread -O2 -pipe -fno-omit-frame-pointer -fstack-protector-strong -fno-strict-aliasing -fno-omit-frame-pointer   -fvisibility=hidden -fvisibility-inlines-hidden -DSPOT_BUILD -std=c++17 -g -O3 -ffast-math -fstrict-aliasing -fomit-frame-pointer -MT ltsmin/modelcheck-modelcheck.o -MD -MP -MF ltsmin/.deps/modelcheck-modelcheck.Tpo -c -o ltsmin/modelcheck-modelcheck.o `test -f 'ltsmin/modelcheck.cc' || echo './'`ltsmin/modelcheck.cc In file included from ltsmin/modelcheck.cc:27: ../spot/mc/mc_instanciator.hh:122:43: error: use of undeclared identifier 'sched_getcpu'                         << ": on CPU " << sched_getcpu() << '\n';                                           ^ ../spot/mc/mc_instanciator.hh:134:9: error: unknown type name 'cpu_set_t'; did you mean 'cpusetid_t'?         cpu_set_t cpuset;         ^~~~~~~~~         cpusetid_t /usr/include/sys/types.h:86:22: note: 'cpusetid_t' declared here typedef __cpusetid_t    cpusetid_t;                         ^ In file included from ltsmin/modelcheck.cc:27: ../spot/mc/mc_instanciator.hh:135:9: error: use of undeclared identifier 'CPU_ZERO'         CPU_ZERO(&cpuset);         ^ ../spot/mc/mc_instanciator.hh:136:9: error: use of undeclared identifier 'CPU_SET'         CPU_SET(i, &cpuset);         ^ ../spot/mc/mc_instanciator.hh:137:18: error: use of undeclared identifier 'pthread_setaffinity_np'         int rc = pthread_setaffinity_np(threads[i].native_handle(),                  ^ ../spot/mc/mc_instanciator.hh:138:48: error: use of undeclared identifier 'cpu_set_t'                                         sizeof(cpu_set_t), &cpuset);                                                ^ 6 errors generated. Thanks, Yuri