+#include <unistd.h>
+#include <errno.h>
+]], [[struct timespec ts[2] = { { 1, UTIME_OMIT }, { 1, UTIME_NOW } };
+ int fd = creat ("conftest.file", 0600);
+ struct stat st;
+ if (fd < 0) return 1;
+ errno = 0;
+ if (futimens (AT_FDCWD, NULL) == 0) return 2;
+ if (errno != EBADF) return 3;
+ if (futimens (fd, ts)) return 4;
+ sleep (1);
+ ts[0].tv_nsec = UTIME_NOW;
+ ts[1].tv_nsec = UTIME_OMIT;
+ if (futimens (fd, ts)) return 5;
+ if (fstat (fd, &st)) return 6;
+ if (st.st_ctime < st.st_atime) return 7;
+ ]])],
+dnl FIXME: simplify this in 2012, when file system bugs are no longer common
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[