SHELL=/bin/bash

# configurable options

ifndef ($(SOURCES_DIR))
	SOURCES_DIR := .
endif

ifndef ($(TESTS_DIR))
	TESTS_DIR := .
endif

ifndef ($(BUILD_DIR))
	BUILD_DIR := .
endif

CC := gcc
CXX := g++

NAME := opener

# dependencies

PACKAGE_NAMES :=

ifeq ($(TEST), 1)
	#	PACKAGE_NAMES += check # TODO: use check?
endif


# set up cflags and libs

CFLAGS :=
LDFLAGS :=

ifneq ($(PACKAGE_NAMES),)
	CFLAGS += $(shell pkg-config --cflags $(PACKAGE_NAMES))
	LDFLAGS += $(shell pkg-config --libs $(PACKAGE_NAMES))
endif

ifeq ($(DEBUG),1)
	CFLAGS += -O0 -pedantic -g -Wall -Wextra -Wcast-align \
						-Wcast-qual -Wdisabled-optimization -Wformat=2 \
						-Winit-self -Wlogical-op -Wmissing-declarations \
						-Wmissing-include-dirs -Wredundant-decls -Wshadow \
						-Wsign-conversion -Wstrict-overflow=5 \
						-Wswitch-default -Wundef -Wno-unused
	LDFLAGS += 
else
	CFLAGS += -O3
	LDFLAGS +=
endif


# set up targets 

TARGETS := $(BUILD_DIR)/$(NAME)

ifeq ($(TEST), 1)
	TARGETS += $(NAME)_test
endif


# build!

default: $(TARGETS)

.PHONY: clean $(NAME)_test

$(NAME)_test: $(BUILD_DIR)/$(NAME)
	echo "No tests defined."
	#$(BUILD_DIR)/$(NAME)

$(BUILD_DIR)/$(NAME): $(BUILD_DIR)/$(NAME).o
	$(CC) $(CFLAGS) $^ $(LDFLAGS) -o $(BUILD_DIR)/$(NAME)

$(BUILD_DIR)/$(NAME).o: $(SOURCES_DIR)/$(NAME).c
	$(CC) $(CFLAGS) -c $< $(LDFLAGS) -o $(BUILD_DIR)/$(NAME).o

clean:
	rm $(BUILD_DIR)/*.o $(BUILD_DIR)/$(NAME)