SRCS = $(wildcard src/*.c)
BINS = $(patsubst src/%.c,bin/%,$(SRCS))

CFLAGS =
CC = gcc $(CFLAGS)

all: build

build: $(BINS)

.SECONDEXPANSION:
$(BINS): $$(patsubst bin/%,src/%.c,$$@)
	@mkdir -pv bin
	$(CC) -o $@ $(patsubst bin/%,src/%.c,$@)

clean:
	rm -f $(BINS)
	rmdir bin