# Basic Makefile for a C program with multiple source files and header dependencies

CC = gcc
CDFLAGS = -Wall -Wextra -std=c17 -I include
CFLAGS = $(CDFLAGS) -g -O0 -MMD -MP
BUILD = build
EXAMPLES_SRC = $(wildcard examples/*.c)
EXAMPLES_OBJ = $(patsubst %.c, $(BUILD)/%.o, $(EXAMPLES_SRC))
EXAMPLES = $(patsubst examples/%.c, %, $(wildcard examples/*.c))
LIB_SRC = $(wildcard coroutine/*.c)
LIB_OBJ = $(patsubst %.c, $(BUILD)/%.o, $(LIB_SRC))
OBJ = $(EXAMPLES_OBJ) $(LIB_OBJ)
DEP = $(OBJ:.o=.d)

# Have $(OBJ) as a dependenacy for $(ALL) to avoid them being treated as intermediates which are deleted after build
all: $(EXAMPLES) $(OBJ)

build:
	mkdir $(BUILD)

%: $(BUILD)/examples/%.o $(LIB_OBJ)
	$(CC) $(CFLAGS) -o $@ $^

$(BUILD)/%.o: %.c build
	$(CC) $(CFLAGS) -c $< -o $@ -MF $(@:.o=.d)

-include $(DEP)

clean:
	echo Doing clean
	rm -f $(OBJ) $(DEP) $(EXAMPLES)

.PHONY: all clean