diff -u gkrellm-wifi-0.9.12.old/Makefile gkrellm-wifi-0.9.12.new/Makefile
--- gkrellm-wifi-0.9.12.old/Makefile	2004-01-03 11:01:18.000000000 -0600
+++ gkrellm-wifi-0.9.12.new/Makefile	2007-03-08 20:26:32.000000000 -0600
@@ -2,7 +2,7 @@
 GKRELLM_LIBS   = $(shell pkg-config gkrellm --libs)
 
 
-CFLAGS  += -Wall -O2 -fPIC $(GKRELLM_CFLAGS) -DG_LOG_DOMAIN=\"gkrellm-wifi\"
+CFLAGS  += -Wall -O2 -fPIC $(GKRELLM_CFLAGS) -DG_LOG_DOMAIN=\"gkrellm-wifi\" -include iwlib.h
 LDFLAGS  = -shared
 LIBS     = $(GKRELLM_LIBS) -lm