message: Remove unused `-lGLU` library include
diff: @@ -14,7 +14,7 @@ NAS2DLIB := $(NAS2DLIBDIR)/libnas2d.a
  CFLAGS := -std=c++11 -g -Wall -Wno-unknown-pragmas -I$(NAS2DINCLUDEDIR) $(shell sdl2-config --cflags)
  LDFLAGS := -lstdc++ -lm -L$(NAS2DLIBDIR) -lnas2d \
  $(shell sdl2-config --libs) -lSDL2 -lSDL2_image -lSDL2_mixer -lSDL2_ttf \
  - -lphysfs -lGLU -lGL -lGLEW
  + -lphysfs -lGL -lGLEW
  DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$*.Td
  