Per buildfarm, HAVE_COPYFILE is not the same thing as HAVE_COPYFILE_H.
Add the extra configure test.
fi
-for ac_header in atomic.h crypt.h fp_class.h getopt.h ieeefp.h ifaddrs.h langinfo.h mbarrier.h poll.h sys/epoll.h sys/ipc.h sys/prctl.h sys/procctl.h sys/pstat.h sys/resource.h sys/select.h sys/sem.h sys/shm.h sys/sockio.h sys/tas.h sys/un.h termios.h ucred.h utime.h wchar.h wctype.h
+for ac_header in atomic.h copyfile.h crypt.h fp_class.h getopt.h ieeefp.h ifaddrs.h langinfo.h mbarrier.h poll.h sys/epoll.h sys/ipc.h sys/prctl.h sys/procctl.h sys/pstat.h sys/resource.h sys/select.h sys/sem.h sys/shm.h sys/sockio.h sys/tas.h sys/un.h termios.h ucred.h utime.h wchar.h wctype.h
do :
as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
AC_CHECK_HEADERS(m4_normalize([
atomic.h
+ copyfile.h
crypt.h
fp_class.h
getopt.h
#include <sys/stat.h>
#include <fcntl.h>
-#ifdef HAVE_COPYFILE
+#ifdef HAVE_COPYFILE_H
#include <copyfile.h>
#endif
#ifdef __linux__
/* Define to 1 if you have the `copyfile' function. */
#undef HAVE_COPYFILE
+/* Define to 1 if you have the <copyfile.h> header file. */
+#undef HAVE_COPYFILE_H
+
/* Define to 1 if you have the <crtdefs.h> header file. */
#undef HAVE_CRTDEFS_H