CC = gcc
SHELL := /usr/bin/env
.SHELLFLAGS := -S bash -c

CFLAGS := -std=c2x $$(pkg-config --cflags libsodium) $$(sdl2-config --cflags)
DEBUG_CFLAGS := -Wall -Wextra -Wpedantic -fanalyzer -Wanalyzer-too-complex -ggdb -g3 -O0
RELEASE_CFLAGS := -O3 -fipa-pta -fipa-cp -fuse-linker-plugin -flto=auto

DEFS := -D_GNU_SOURCE=1
DEBUG_DEFS := -DDEBUG=1
RELEASE_DEFS := -DRELEASE=1

LDLIBS := $$(pkg-config --libs-only-l libsodium) $$(sdl2-config --libs)

LDFLAGS := $$(pkg-config --libs-only-L libsodium)
RELEASE_LDFLAGS := -fuse-linker-plugin -flto=auto

SOURCES := $(wildcard *.c)
TIMESTAMP_DIR := .timestamps
TIMESTAMPS := $(patsubst %.c,$(TIMESTAMP_DIR)/%.t,$(SOURCES))

.PHONY: deps debug release c clean v val t test
.DELETE_ON_ERROR:
.ONESHELL:

# Rule specific var redefs
tests debug: CFLAGS += $(DEBUG_CFLAGS)
tests debug: DEFS += $(DEBUG_DEFS)
release: CFLAGS += $(RELEASE_CFLAGS)
release: LDFLAGS += $(RELEASE_LDFLAGS)
release: DEFS += $(RELEASE_DEFS)

debug: main
release: main

clay.h:
	cd ..
	git submodule update --init --recursive
	cp -fl clay/clay.h src/

$(TIMESTAMP_DIR):
	mkdir -p $(TIMESTAMP_DIR)

$(TIMESTAMPS): $(TIMESTAMP_DIR)/%.t: %.c | $(TIMESTAMP_DIR)
	touch $@

main: clay.h
main tests: %: %.c $(TIMESTAMPS)
	$(CC) $(DEFS) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Phony rules
c clean:
	-rm -rvf main tests $(TIMESTAMP_DIR) $(wildcard *.test*) $(wildcard *.enc)

v val: main
	valgrind --leak-check=yes ./main

t test: tests
	valgrind --leak-check=yes ./tests

deps:
	sudo apt install libsodium-dev libsdl2-dev libsdl2-ttf-dev