Index: cpudetect.c
===================================================================
--- cpudetect.c	(revision 27666)
+++ cpudetect.c	(working copy)
@@ -29,6 +29,10 @@
 #include <signal.h>
 #endif
 
+#ifdef __sun
+#include <sys/utsname.h>
+#endif
+
 #ifdef WIN32
 #include <windows.h>
 #endif
@@ -187,7 +191,7 @@
 #if defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \
   || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
   || defined(__APPLE__) || defined(__CYGWIN__) || defined(__MINGW32__) \
-  || defined(__OS2__)
+  || defined(__OS2__) || defined(__sun)
 		if (caps->hasSSE)
 			check_os_katmai_support();
 		if (!caps->hasSSE)
@@ -363,6 +367,20 @@
 #ifdef ARCH_X86_64
    gCpuCaps.hasSSE=1;
    gCpuCaps.hasSSE2=1;
+#elif defined(__sun)
+   struct utsname solname;
+   long major, minor = 0;
+   char *radix;
+
+   if (uname(&solname) > 0) {
+      major = strtol(solname.release, &radix, 10);
+      if (*radix != '\0')
+         minor = strtol(++radix, NULL, 10);
+      if (!(major >= 5 && minor >= 9))
+         gCpuCaps.hasSSE=0;
+   } else {
+      gCpuCaps.hasSSE=0;
+   }
 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__APPLE__)
    int has_sse=0, ret;
    size_t len=sizeof(has_sse);