2 files changed, 8 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index bf129956..08a0e782 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1016,6 +1016,10 @@ if test -n "$ac_cv_ps_varlist" ; then
                 AC_DEFINE(PS_USES_PROCETIME,"yes",
                           [Whether the ps utility uses the "procetime" field])
         fi
+        if echo "$ac_cv_ps_varlist" | grep "procpcpu" >/dev/null; then
+                AC_DEFINE(PS_USES_PROCPCPU,"yes",
+                          [Whether the ps utility uses the "procpcpu" field])
+        fi
 fi
 
 AC_PATH_PROG(PATH_TO_PING,ping)
diff --git a/plugins/check_load.c b/plugins/check_load.c
index 6fd895f2..bf7b94b4 100644
--- a/plugins/check_load.c
+++ b/plugins/check_load.c
@@ -349,6 +349,7 @@ print_usage (void)
   printf ("%s [-r] -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15 [-n NUMBER_OF_PROCS]\n", progname);
 }
 
+#ifdef PS_USES_PROCPCPU
 int cmpstringp(const void *p1, const void *p2) {
         int procuid = 0;
         int procpid = 0;
@@ -367,6 +368,7 @@ int cmpstringp(const void *p1, const void *p2) {
         sscanf (* (char * const *) p2, PS_FORMAT, PS_VARLIST);
         return procpcpu1 < procpcpu;
 }
+#endif /* PS_USES_PROCPCPU */
 
 static int print_top_consuming_processes() {
         int i = 0;
@@ -379,7 +381,9 @@ static int print_top_consuming_processes() {
                 fprintf(stderr, _("some error occurred getting procs list.\n"));
                 return STATE_UNKNOWN;
         }
+#ifdef PS_USES_PROCPCPU
         qsort(chld_out.line + 1, chld_out.lines - 1, sizeof(char*), cmpstringp);
+#endif /* PS_USES_PROCPCPU */
         int lines_to_show = chld_out.lines < (n_procs_to_show + 1)
                         ? chld_out.lines : n_procs_to_show + 1;
         for (i = 0; i < lines_to_show; i += 1) {