Linking fixes for Solarish systems

@@ -17,11 +17,11 @@
 include ../s2n.mk
 
 ifeq ($(shell uname),Darwin)
     LIBS = 
 else
-    LIBS = -ldl -lrt -lpthread
+    LIBS = -ldl -lrt -lpthread -lsocket -lnsl
 endif
 
 LDFLAGS += -L../lib/ -ls2n ${LIBS}
 CRUFT += s2nc s2nd