# Check for some syscalls functions
AC_CHECK_FUNCS([setns pivot_root sethostname unshare rand_r confstr faccessat gettid memfd_create move_mount open_tree execveat clone3 fsopen fspick fsconfig fsmount, openat2, close_range, statvfs])
+AC_CHECK_TYPES([__aligned_u64], [], [], [[#include <linux/types.h>]])
AC_CHECK_TYPES([struct open_how], [], [], [[#include <linux/openat2.h>]])
AC_CHECK_TYPES([struct clone_args], [], [], [[#include <linux/sched.h>]])
AC_CHECK_MEMBERS([struct clone_args.set_tid],[],[],[[#include <linux/sched.h>]])
#define hweight32(w) __const_hweight32(w)
#define hweight64(w) __const_hweight64(w)
+#ifndef HAVE___ALIGNED_U64
+#define __aligned_u64 __u64 __attribute__((aligned(8)))
+#endif
+
#endif /* __LXC_MACRO_H */