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BIN = pyramid
SRC = pyramid.c math3d.c gltools.c glframe.c shader.c platform.c window.c
CC = gcc
CFLAGS = -Wall -std=c99
DBGFLAGS = -g -O0
ifdef DEBUG
    CFLAGS += $(DBGFLAGS)
else
    CFLAGS += -O2 -march=native -mtune=native
endif
LDFLAGS = -lGLEW -lGL -lGLU -lm -lglut
SDL_CFLAGS := $(shell sdl-config --cflags)
SDL_LDFLAGS := $(shell sdl-config --libs)
SDL_image_CFLAGS := $(shell pkg-config --cflags SDL_image)
SDL_image_LDFLAGS := $(shell pkg-config --libs SDL_image)

OBJ_DIR = obj
OBJ_FILES = $(addprefix $(OBJ_DIR)/, $(addsuffix .o, $(subst .c,,$(SRC))))

$(BIN): $(OBJ_DIR) $(OBJ_FILES)
	$(CC) $(LDFLAGS) $(SDL_LDFLAGS) $(SDL_image_LDFLAGS) $(OBJ_FILES) -o $@

$(OBJ_DIR)/pyramid.o: $(OBJ_DIR)/%.o: %.c math3d.h gltools.h glframe.h platform.h
	$(CC) -c $(CFLAGS) $(SDL_CFLAGS) $(SDL_image_CFLAGS) $< -o $@

$(OBJ_DIR)/math3d.o: $(OBJ_DIR)/%.o: %.c %.h
	$(CC) -c $(CFLAGS) $< -o $@

$(OBJ_DIR)/gltools.o: $(OBJ_DIR)/%.o: %.c %.h math3d.h
	$(CC) -c $(CFLAGS) $< -o $@

$(OBJ_DIR)/glframe.o: $(OBJ_DIR)/%.o: %.c %.h math3d.h
	$(CC) -c $(CFLAGS) $< -o $@

$(OBJ_DIR)/shader.o: $(OBJ_DIR)/%.o: %.c %.h
	$(CC) -c $(CFLAGS) $< -o $@

$(OBJ_DIR)/platform.o: $(OBJ_DIR)/%.o: %.c %.h
	$(CC) -c $(CFLAGS) $(SDL_CFLAGS) $(SDL_image_CFLAGS) $< -o $@

$(OBJ_DIR)/window.o: $(OBJ_DIR)/%.o: %.c %.h
	$(CC) -c $(CFLAGS) $(SDL_CFLAGS) $(SDL_image_CFLAGS) $< -o $@

$(OBJ_DIR):
	mkdir -p $(OBJ_DIR)

.PHONY: clean info

clean:
	@rm -rf $(OBJ_DIR)
	@rm -f $(BIN)

info:
	@echo $(OBJ_FILES)