diff --git a/Makefile b/Makefile
index 8c308ca..2ce1502 100644
--- a/Makefile
+++ b/Makefile
@@ -1,36 +1,27 @@
 TARGET  = lib/libguisan.a
   
-#compile and lib parameter
 AR      = ar
+
 DIRS	=$(shell find ./src -maxdepth 3 -type d)
-FILES	= $(foreach dir,$(DIRS),$(wildcard $(dir)/*.cpp))
-INCLUDE	=-I./include  
-CFLAGS  := -g -w -O3  $(INCLUDE)
-CXXFLAGS:= $(CFLAGS)
-#i think you should do anything here
-  
-#source file
-SOURCE  = $(FILES)
+SOURCE	= $(foreach dir,$(DIRS),$(wildcard $(dir)/*.cpp))
 OBJS    = $(patsubst %.c,%.o,$(patsubst %.cpp,%.o,$(SOURCE)))
+
+INCLUDE	=-I./include  
+CFLAGS  = -g -w -O3  $(INCLUDE)
+CXXFLAGS= $(CFLAGS)
   
-.PHONY : everything objs clean veryclean rebuild
   
-everything : $(TARGET)
-  
-all : $(TARGET)
-	cd demo && make && cd ..
-	cd examples && make && cd ..
-  
-objs : $(OBJS)
-  
-rebuild: everything
-                
-clean :
-	find . -name *.o |xargs rm -f
-	rm -rf $(TARGET)
-	cd demo && make clean && cd ..
-	cd examples && make clean && cd ..
+.PHONY : all clean
   
 $(TARGET) : $(OBJS)
 	$(AR) cr $(TARGET) $(OBJS)
 
+all : $(TARGET)
+	cd demo&&make all&&cd ..
+	cd examples&&make all&&cd ..
+  
+clean :
+	cd demo&&make clean&&cd ..
+	cd examples&&make clean&&cd ..
+	find . -name *.o |xargs rm -f
+	rm -rf $(TARGET)
diff --git a/examples/Makefile b/examples/Makefile
index 2f98703..2f79ae1 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -1,21 +1,22 @@
 CC		=g++
 INCLUDE	=-I../include
-CXXFLAGS=-g -w -O3 $(INCLUDE)
-LIBS	=../lib/libguisan.a
-LDLIBS	=-lSDL2 -lSDL2_image -lSDL2_ttf -lSDL2_mixer
+LDFLAGS	=-L../lib
+LIBS	=-lSDL2_ttf -lSDL2_mixer -lguisan -lSDL2_image -lSDL2
+CFLAGS	=-g -w -O3 $(INCLUDE) $(LDFLAGS)
+CXXFLAGS=$(CFLAGS)
 
 .PHONY:all clean  
-  
+ 
 all	:sdlhelloworld sdlaction sdlwidgets
 
 sdlhelloworld:sdlhelloworld.o
-	$(CC) sdlhelloworld.cpp $(LIBS) $(INCLUDE) -o sdlhelloworld $(LDLIBS)
+	$(CC) $(CXXFLAGS) -o sdlhelloworld sdlhelloworld.o $(LIBS)
 
 sdlaction:sdlaction.o
-	$(CC) sdlaction.cpp $(LIBS) $(INCLUDE) -o sdlaction $(LDLIBS)
+	$(CC) $(CXXFLAGS) -o sdlaction sdlaction.o $(LIBS)
 
 sdlwidgets:sdlwidgets.o
-	$(CC) sdlwidgets.cpp $(LIBS) $(INCLUDE) -o sdlwidgets $(LDLIBS)
+	$(CC) $(CXXFLAGS) -o sdlwidgets sdlwidgets.o $(LIBS)
 
 clean:
 	rm -rf sdlhelloworld sdlaction sdlwidgets *.o
diff --git a/examples/sdlaction b/examples/sdlaction
deleted file mode 100755
index 2cfb9dc..0000000
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diff --git a/examples/sdlhelloworld b/examples/sdlhelloworld
deleted file mode 100755
index 35939a9..0000000
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diff --git a/examples/sdlwidgets b/examples/sdlwidgets
deleted file mode 100755
index cdafc6a..0000000
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diff --git a/lib/libguisan.a b/lib/libguisan.a
deleted file mode 100644
index 731010a..0000000
Binary files a/lib/libguisan.a and /dev/null differ