CC := gcc
GLSLC := glslc

ifeq ($(PROD),1)
CFLAGS := -O2 # production flags
else
CFLAGS := -Wall -Wextra -Wpedantic -g -DDEBUG # debug flags
endif

CFLAGS += -std=c99 -lm -lvulkan `sdl2-config --cflags --libs` /usr/local/lib/libcglm.a

SRCD := src
OBJD := obj
BIND := bin
FILD := files
SHDR := shaders

SFILE = $(shell find $(SRCD)/ -type f 2> /dev/null)
CSRCS = $(filter %.c, $(SFILE))
COBJS = $(CSRCS:$(SRCD)/%.c=$(OBJD)/%.o)

FILES = $(shell find $(FILD) -type f 2> /dev/null)
SHDRS = $(filter %.vert %.frag, $(FILES))
SHOBJ = $(SHDRS:$(FILD)/$(SHDR)/%=$(BIND)/$(SHDR)/%.spv)

CDEPS = $(COBJS:%.o=%.d)
-include $(CDEPS)

NAME := test

all: clean $(NAME)
$(NAME): $(BIND)/$(NAME) $(SHOBJ)

clean:
	rm -rf $(BIND)
	rm -rf $(OBJD)

$(OBJD)/%.o: $(SRCD)/%.c
	@mkdir -p $(dir $@)
	$(CC) $(CFLAGS) -MMD -MF $(@:%.o=%.d) -c $< -o $@

$(BIND)/$(SHDR)/%.spv: $(FILD)/$(SHDR)/%
	@mkdir -p $(dir $@)
	$(GLSLC) $< -o $@

$(BIND)/$(NAME): $(COBJS)
	@mkdir -p $(dir $@)
	$(CC) $(CFLAGS) $^ -o $@

# Extra Tools

RUN_CMD := cd $(BIND) && ./$(NAME)
UNITY := unity

$(BIND)/$(UNITY): $(CSRCS)
	@mkdir -p $(dir $@)

	for src in $^; do \
		cat $${src} >> $(SRCD)/$(UNITY).c; \
	done

	$(CC) $(CFLAGS) $(SRCD)/$(UNITY).c -o $@
	@rm $(SRCD)/$(UNITY).c

analyze: clean
	scan-build \
		-enable-checker alpha \
		-enable-checker core \
		-enable-checker deadcode \
		-enable-checker security \
		-enable-checker unix \
		make $(BIND)/$(UNITY)

sanitize: clean
	$(MAKE) CC="clang -fsanitize=address" run

run: $(NAME)
	$(RUN_CMD)

valgrind: $(BIND)/$(NAME)
	cd $(BIND) && \
	valgrind -s --leak-check=full --show-leak-kinds=all ./$(NAME)