PKGS=libtiff-4 libpng
DEFINES=
EXE=prog
BUILD_DIR=build/
INC_DIR=include/

# Source files
SRC_DIR=src/
SRC_OBJ_DIR=$(BUILD_DIR)obj/src/
SRC_SRCS=$(shell find $(SRC_DIR) -iname \*.c)
SRC_OBJS_sub=$(subst $(SRC_DIR),$(SRC_OBJ_DIR),$(SRC_SRCS))
SRC_OBJS=$(SRC_OBJS_sub:.c=.o)
SRC_OBJ_DIRS_sub=$(shell find $(SRC_DIR) -type d)
SRC_OBJ_DIRS=$(subst $(SRC_DIR),$(SRC_OBJ_DIR),$(SRC_OBJ_DIRS_sub))

$(info $(SRC_SRCS))
$(info $(SRC_OBJ_DIR))
$(info $(SRC_OBJ_DIRS))
$(info $(SRC_OBJS))

# Library files

# Include raylib if we want a visual experience
ifdef RAYLIB
$(info Visual Experience Selected)
PKGS+=raylib
DEFINES+=-DVISUAL
endif

# Dump AVL tree info?
ifdef AVL_INFO
$(info Including AVL Dump)
DEFINES+=-DAVL_INFO
endif

ifeq ($(shell uname -s),Linux)
	PKGCONF=pkgconf
endif
ifeq ($(shell uname -s),Darwin)
	PKGCONF=pkg-config
endif

CFLAGS=
CFLAGS+=$(shell $(PKGCONF) --cflags $(PKGS))
CFLAGS+=-I$(INC_DIR)
CFLAGS+=$(DEFINES)
CFLAGS+=-Wall

LDFLAGS=
LDFLAGS+=$(shell $(PKGCONF) --libs $(PKGS))

default: clean build

.PHONY: clean build run

build: $(BUILD_DIR)$(EXE)

$(BUILD_DIR)$(EXE): $(SRC_OBJS)
	@echo LD --\> $@
	@gcc -o $@ $(LDFLAGS) $^

$(SRC_OBJ_DIR)%.o: $(SRC_DIR)%.c
	@echo CC $< --\> $@
	@gcc -o $@ $(CFLAGS) -c $<

clean:
	@echo Cleaning build files...
	@-rm -rf $(OBJ_DIR) $(BUILD_DIR)
	@mkdir -p $(BUILD_DIR) $(SRC_OBJ_DIRS)

run: $(BUILD_DIR)$(EXE)
	@echo Executing...
	@./$(BUILD_DIR)$(EXE)