FILE := app
TARGET := $(FILE)
REPOS := glcxx glm

CCFLAGS := $(shell sdl2-config --cflags)
ifeq (MINGW,$(findstring MINGW,$(shell uname)))
LIBS := -lopengl32 -lglu32 -lmingw32
CXX := mingw32-g++
TARGET := $(TARGET).exe
else
LIBS := -lGL -lGLU `sdl2-config --libs`
endif
LDFLAGS := $(LIBS) $(shell sdl2-config --libs)


all: submodule_init $(TARGET)

$(TARGET): $(FILE).cc
	$(CXX) -o $(TARGET) $(CCFLAGS) $< $(LDFLAGS)

.PHONY: submodule_init
submodule_init:
	@if [ ! -e glcxx ]; then \
	  git submodule update --init; \
	fi

clean:
	-rm -f $(TARGET) *~ *.o