# Check for header files not covered by the predefined macros above.
AC_CHECK_HEADERS([ fcntl.h getopt.h libgen.h limits.h linux/xattr.h ])
# Check for header files not covered by the predefined macros above.
AC_CHECK_HEADERS([ fcntl.h getopt.h libgen.h limits.h linux/xattr.h ])
# We need openat() with O_NOFOLLOW from POSIX-2008. Without them, we
# can't operate securely; I would rather refuse to be built.
# We need openat() with O_NOFOLLOW from POSIX-2008. Without them, we
# can't operate securely; I would rather refuse to be built.