cmake HAVE_SYS_GETTID examples

percona/percona-server configure.cmake :565 

CHECK_C_SOURCE_COMPILES("
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
int main(int ac, char **av)
{
  unsigned long long tid = syscall(SYS_gettid);
  return (tid != 0 ? 0 : 1);
}"
HAVE_SYS_GETTID)

logicalclocks/rondb configure.cmake :557 

CHECK_C_SOURCE_COMPILES("
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
int main(int ac, char **av)
{
  unsigned long long tid = syscall(SYS_gettid);
  return (tid != 0 ? 0 : 1);
}"
HAVE_SYS_GETTID)

polardb/polardbx-engine configure.cmake :572 

CHECK_C_SOURCE_COMPILES("
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
int main(int ac, char **av)
{
  unsigned long long tid = syscall(SYS_gettid);
  return (tid != 0 ? 0 : 1);
}"
HAVE_SYS_GETTID)

percona/percona-xtrabackup configure.cmake :556 

CHECK_C_SOURCE_COMPILES("
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
int main(int ac, char **av)
{
  unsigned long long tid = syscall(SYS_gettid);
  return (tid != 0 ? 0 : 1);
}"
HAVE_SYS_GETTID)

GreatSQL/GreatSQL configure.cmake :573 

CHECK_C_SOURCE_COMPILES("
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
int main(int ac, char **av)
{
  unsigned long long tid = syscall(SYS_gettid);
  return (tid != 0 ? 0 : 1);
}"
HAVE_SYS_GETTID)

percona/percona-xtradb-cluster configure.cmake :566 

CHECK_C_SOURCE_COMPILES("
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
int main(int ac, char **av)
{
  unsigned long long tid = syscall(SYS_gettid);
  return (tid != 0 ? 0 : 1);
}"
HAVE_SYS_GETTID)

facebook/mysql-5.6 configure.cmake :599 

CHECK_C_SOURCE_COMPILES("
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
int main(int ac, char **av)
{
  unsigned long long tid = syscall(SYS_gettid);
  return (tid != 0 ? 0 : 1);
}"
HAVE_SYS_GETTID)

mysql/mysql-server configure.cmake :555 

CHECK_C_SOURCE_COMPILES("
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
int main(int ac, char **av)
{
  unsigned long long tid = syscall(SYS_gettid);
  return (tid != 0 ? 0 : 1);
}"
HAVE_SYS_GETTID)