--- gdl-0.9.7/src/objects.cpp.orig	Wed May 31 14:10:14 2017
+++ gdl-0.9.7/src/objects.cpp	Wed May 31 14:38:58 2017
@@ -20,6 +20,11 @@
 #include <limits>
 #include <ios>
 
+#if defined(__sun__)
+ #include <sys/time.h>
+ #include <sys/loadavg.h>
+#endif
+
 #include "str.hpp"
 #include "gdlexception.hpp"
 #include "initsysvar.hpp"
@@ -935,7 +940,16 @@
     {
       return default_num_threads;
     }
-   
+
+#elif defined(__sun__)
+  int nelem = 3;
+  double loadavg[nelem];
+  (void)getloadavg(loadavg,nelem);
+
+  if (.5 < loadavg[LOADAVG_15MIN]) 
+	avload = 1;
+
+  return (nbofproc - avload); 
 #elif defined (__unix) || defined(__unix__)
   iff=freopen("/proc/loadavg","r",stderr);
   fclose(stderr);