SRC_DIR = src
COLLEEN_SRCS = $(SRC_DIR)/Colleen.c
GRACE_SRCS = $(SRC_DIR)/Grace.c

COLLEEN = Colleen
GRACE = Grace

.DEFAULT_GOAL := all
MAKEFLAGS += --no-print-directory

CC = clang
CPPFLAGS = -std=c99 -I includes
CFLAGS = -Wall -Wextra -Werror -pipe -Wpedantic -Wconversion -Wshadow -Wvla
LDFLAGS =

OBJ_DIR = .build

COLLEEN_OBJS = $(COLLEEN_SRCS:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o)
COLLEEN_DEPS = $(COLLEEN_OBJS:.o=.d)

GRACE_OBJS = $(GRACE_SRCS:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o)
GRACE_DEPS = $(GRACE_OBJS:.o=.d)

.PHONY: all
all: $(COLLEEN) $(GRACE)

$(GRACE): $(GRACE_OBJS)
	$(CC) $(LDFLAGS) -o $@ $^

$(COLLEEN): $(COLLEEN_OBJS)
	$(CC) $(LDFLAGS) -o $@ $^

$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
	@mkdir -p $(dir $@)
	$(CC) $(CPPFLAGS) $(CFLAGS) -MMD -MP -c $< -o $@

-include $(COLLEEN_DEPS)
-include $(GRACE_DEPS)

.PHONY: clean
clean:
	$(RM) -r $(OBJ_DIR)

.PHONY: fclean
fclean: clean
	$(RM) $(COLLEEN) $(GRACE)

.PHONY: re
re: fclean
	$(MAKE) all