Supporting kFreebsd previously led to FreeBSD (< 14) build breakage: In file included from src/cpuset.c:5: In file included from include/haproxy/cpuset.h:4: include/haproxy/cpuset-t.h:46:2: error: unknown type name 'cpu_set_t'; did you mean 'cpuset_t'? CPUSET_REPR cpuset; ^~~~~~~~~~~ cpuset_t include/haproxy/cpuset-t.h:21:22: note: expanded from macro 'CPUSET_REPR' # define CPUSET_REPR cpu_set_t ^