--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,11 @@
 HOME	= .
 PREFIX  = /usr
-CC	= cc
+CC	?= cc
 INCLUDE	= -I./ -I${PREFIX}/include
-OPTS	= -shared `pkg-config gtk+-2.0 --cflags`
+CFLAGS	+= -shared `${PKG_CONFIG} gtk+-2.0 --cflags` -fPIC
+LDFLAGS  += -shared -fPIC
 DEFINES = 
-LIBS	= `pkg-config gtk+-2.0 --cflags`
+LIBS	= `${PKG_CONFIG} gtk+-2.0 --libs`
 
 GKVO	= vaiobright.o
 GKV	= vaiobright.so 
@@ -12,7 +13,7 @@
 all:	$(GKV)
 
 $(GKV): $(GKVO)
-	$(CC) $(OPTS) -o $(GKV) $(GKVO) $(LIBS)
+	$(CC) $(LDFLAGS) -o $(GKV) $(GKVO) $(LIBS)
 
 install:
 	@-echo "Copy the plugin ($(GKV) to ~/.gkrellm2/plugins/$(GKV) and restart gkrellm."
@@ -22,9 +23,9 @@
 	@-rm *.o *.so
 
 .c.so:	$(DEPEND)
-	$(CC) $(OPTS) $(INCLUDE) $(DEFINES) -fPIC -c $*.c -o $@ 
+	$(CC) $(CFLAGS) $(INCLUDE) $(DEFINES) -fPIC -c $*.c -o $@ 
 
 .c.o:	$(DEPEND)
-	$(CC) $(OPTS) $(INCLUDE) $(DEFINES) -c $*.c -o $@
+	$(CC) $(CFLAGS) $(INCLUDE) $(DEFINES) -c $*.c -o $@
 
 .SUFFIXES: .c .so .o