Add makefile for freeglut

examples/.gitignore

@@ -33,6 +33,7 @@ example_glfw_opengl2/example_glfw_opengl2
 example_glfw_opengl3/example_glfw_opengl3
 example_sdl_opengl2/example_sdl_opengl2
 example_sdl_opengl3/example_sdl_opengl3
+example_freeglut_opengl2/example_freeglut_opengl2
 
 ## Dear ImGui Ini files
 imgui.ini

examples/example_freeglut_opengl2/Makefile

@@ -0,0 +1,65 @@
+#
+# Cross Platform Makefile
+# Compatible with Ubuntu 14.04.1 and Mac OS X
+#
+# Linux:
+#   apt-get install freeglut3-dev
+#
+
+#CXX = g++
+#CXX = clang++
+
+EXE = example_freeglut_opengl2
+SOURCES = main.cpp 
+SOURCES += ../imgui_impl_freeglut.cpp ../imgui_impl_opengl2.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp 
+OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
+
+UNAME_S := $(shell uname -s)
+
+
+ifeq ($(UNAME_S), Linux) #LINUX
+	ECHO_MESSAGE = "Linux"
+	LIBS = -lGL -lglut
+
+	CXXFLAGS = -I ../ -I../..
+	CXXFLAGS += -Wall -Wformat
+	CFLAGS = $(CXXFLAGS)
+endif
+
+ifeq ($(UNAME_S), Darwin) #APPLE
+	ECHO_MESSAGE = "Mac OS X"
+	LIBS = -framework OpenGL -framework GLUT
+
+	CXXFLAGS = -I .. -I../..
+	CXXFLAGS += -Wall -Wformat
+	CFLAGS = $(CXXFLAGS)
+endif
+
+ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
+   ECHO_MESSAGE = "Windows"
+   LIBS = -lgdi32 -lopengl32 -limm32 -lglut
+
+   CXXFLAGS = -I ../ -I../../
+   CXXFLAGS += -Wall -Wformat
+   CFLAGS = $(CXXFLAGS)
+endif
+
+
+%.o:%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../../%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+all: $(EXE)
+	@echo Build complete for $(ECHO_MESSAGE)
+
+$(EXE): $(OBJS)
+	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
+
+clean:
+	rm -f $(EXE) $(OBJS)