In file included from ../../third_party/abseil-cpp/absl/base/internal/unscaledcycleclock.cc:27:
/usr/include/sys/sysctl.h:1185:25: error: unknown type name 'u_int'
int sysctl(const int *, u_int, void *, size_t *, const void *, size_t);
^
../../third_party/abseil-cpp/absl/base/internal/unscaledcycleclock.cc:89:10: error: unknown type name 'once_flag'
static once_flag init_timebase_frequency_once;
^
../../third_party/abseil-cpp/absl/base/internal/unscaledcycleclock.cc:91:18: error: no member named 'LowLevelCallOnce' in namespace 'absl::base_internal'
base_internal::LowLevelCallOnce(&init_timebase_frequency_once, [&]() {
~~~~~~~~~~~~~~~^
