build_dir?=build
src_dir?=src
tst_dir?=tst
install_dir?=install

bins?= \
	01-main \
	02-switch \
	03-equity \
	11-join \
	12-join-main \
	21-create-many \
	22-create-many-recursive \
	23-create-many-once \
	31-switch-many \
	32-switch-many-join \
	33-switch-many-cascade \
	51-fibonacci \
	61-mutex \
	62-mutex \
	71-preemption \
	81-deadlock

bins_target=$(addprefix ${build_dir}/,${bins})
install_bins_targets=$(addprefix ${install_dir}/bin/,${bins})

src_dirs=$(sort $(dir $(wildcard ${src_dir}/**/)))
includes=$(patsubst %,-I%,${src_dirs})
CFLAGS+=-g -O0 -std=c99 ${includes} -lpthread
LDFLAGS+=

srcs+=$(wildcard ${src_dir}/*.c ${src_dir}/**/*.c)
objs+=$(patsubst %.c,${build_dir}/%.o,${srcs})

.PHONY: all
all: build

.PHONY: install
install: build ${install_bins_targets}

.PHONY: ${install_bins_targets}
${install_bins_targets}: ${install_dir}/bin/%: ${build_dir}/%
	@mkdir -p $(dir $@)
	install $^ $@

.PHONY: graphs
graphs:
	true

.PHONY: valgrind
valgrind: build
	valgrind --leak-check=full --show-reachable=yes --track-origins=yes

.PHONY: build
build: ${bins_target}

.PHONY: pthreads
pthreads:
	true

.PHONY: check
check:
	true

${bins_target}: ${build_dir}/%: ${objs} ${build_dir}/${tst_dir}/%.o
	${CC} -o $@ $^ ${CFLAGS} ${LDFLAGS}

${build_dir}/%.o: %.c
	@mkdir -p $(dir $@)
	${CC} -o $@ -c $^ ${CFLAGS}

.PHONY: compile_flags.txt
compile_flags.txt:
	(echo "${CFLAGS} ${LDFLAGS}" | sed 's/ /\n/g') > compile_flags.txt

.PHONY: clean
clean:
	${RM} -rf build main