src = \
      cyl.cpp cyl_opengl.cpp \
      ellipsoid.cpp ellipsoid_opengl.cpp \
      gc.cpp geom.cpp gr.cpp \
      jpeg.cpp \
      light.cpp light_opengl.cpp line.cpp line_opengl.cpp  \
      gr_opengl.cpp \
      point.cpp point_opengl.cpp poly.cpp poly_opengl.cpp \
      scene.cpp  scene_opengl.cpp  \
      sphere.cpp sphere_opengl.cpp \
      vgeom.cpp  vgeom_opengl.cpp  \
      win.cpp win_glut.cpp

obj = $(src:.cpp=.o)  \