--- make-4.2.1/configure.ac	2016-06-06 13:27:31.000000000 +0100
+++ make-4.2.1.1/configure.ac	2016-10-09 18:33:34.574257275 +0100
@@ -176,10 +176,30 @@
 AS_IF([test "$have_guile" = yes],
       [AC_DEFINE([HAVE_GUILE], [1], [Embed GNU Guile support])])
 
 AM_CONDITIONAL([HAVE_GUILE], [test "$have_guile" = yes])
 
+AC_CHECK_FUNCS[open close read lseek atoi]
+AC_CACHE_CHECK([for /proc/loadavg usability], [ac_cv_proc_loadavg],
+  [ac_cv_proc_loadavg=no
+   AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+int main() {
+  int fd, i, n; char str[64];
+  fd = open("/proc/loadavg", O_RDONLY);
+  if (fd < 0 || read(fd, str, 64) < 0 || lseek(fd, 0, SEEK_SET) < 0) return 1;
+  for (str[63] = i = n = 0; i < 3 && n < 64; ++n) if (str[n] == ' ') ++i;
+  return i < 3 || atoi(&str[n]) < 1 || close(fd) < 0;}]])],
+                  [ac_cv_proc_loadavg=yes],
+                  [ac_cv_proc_loadavg=no],
+                  [ac_cv_proc_loadavg="no (cross-compiling)"])])
+AS_IF([test "$ac_cv_proc_loadavg" = yes],
+[ AC_DEFINE([HAVE_PROC_LOADAVG], [1],
+            [Define to 1 when /proc/loadavg exists and appears usable])
+])
+
 AC_FUNC_GETLOADAVG
 
 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
 # doesn't.  So, we will.