Fix build on illumos.

configure.ac

@@ -68,6 +68,18 @@ echo "nanosleep() required for timing operations."
 exit 1
 ])
 
+# On illumos we need -lsocket
+AC_SEARCH_LIBS(socket, [socket], [], [
+echo "socket()"
+exit 1
+])
+
+# On illumos inet_ntop in in -lnsl
+AC_SEARCH_LIBS(inet_ntop, [nsl], [], [
+echo "inet_ntop()"
+exit 1
+])
+
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
 

src/portable_endian.h

@@ -55,7 +55,7 @@
 
 #	include <sys/endian.h>
 
-#elif defined(__SunOS)
+#elif defined(__SunOS) || defined(__sun)
 
 #	include <sys/types.h>
 #	include <netinet/in.h>