alibaba/AliSQL
storage/ndb/ndb_configure.cmake
:127
CHECK_C_SOURCE_COMPILES("
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <sys/syscall.h>]
#define FUTEX_WAIT 0
#define FUTEX_WAKE 1
#define FUTEX_FD 2
#define FUTEX_REQUEUE 3
#define FUTEX_CMP_REQUEUE 4
#define FUTEX_WAKE_OP 5
int main()
{
int a = 0; int * addr = &a;
return syscall(SYS_futex, addr, FUTEX_WAKE, 1, 0, 0, 0) == 0 ? 0 : errno;
}"
HAVE_LINUX_FUTEX)