CC = gcc
CFLAGS = -Wall -Wextra -std=c11
LIBRARIES= -L ./libraries/lwcell/build -l lwcell.so -lm
INCLUDES = -I ./source -I ./libraries/lwcell/include

# define variable for our dependencies' Makefiles.
# we use find to grab only the top level Makefiles and also some convenient ignores.
DEPENDENCIES = $(shell find ./deps -maxdepth 2 -name Makefile -printf '%h\n' | grep -v 'unittest' | grep -v '^.$$')

SOURCES = $(shell find ./source -name '*.c')

SRC = source
OBJ = objects
BIN = bin
TARGET = root

PREFIX ?= /usr/local

# Debug
ifeq ($(DEBUG), 1)
	CFLAGS += -DDEBUG=1 -ggdb
endif

# Release
ifeq ($(RELEASE), 1)
	CFLAGS += -O2
endif

# Shared
ifeq ($(SHARED), 1)
    SOURCES=$(shell find ./$(SRC)/libraries -name '*.c')
    TARGET=my_lib
endif

OBJECTS = $(addprefix $(OBJ)/,$(SOURCES:%.c=%.o))

.PHONY: all
all: dependencies source

.PHONY: dependencies 
dependencies:  
	git -C ./libraries/lwcell pull

.PHONY: source 
source: $(OBJECTS)
	@mkdir -p $(BIN)
ifeq ($(SHARED), 1)
	$(CC) -shared -fPIC -o $(BIN)/$(TARGET).so $^ $(LIBRARIES)
	ar -rcs $(BIN)/$(TARGET).a $^
else
	$(CC) $(CFLAGS) $(LIBRARIES) $^ -o $(BIN)/$(TARGET)
endif
	# $(CC) -o $(TARGET) $(OBJECTS) $(CFLAGS)

$(OBJ)/%.o: %.c
	@mkdir -p $(dir $@)
	$(CC) -c -o $@ $< $(CFLAGS) $(INCLUDES)
	
.PHONY: clean
clean:
	@rm -rf $(OBJ)/* 2> /dev/null
	@rm -f $(BIN)/* 2> /dev/null

# .PHONY: install
# install:
# 	install $(TARGET) $(PREFIX)/bin

# .PHONY: uninstall
# uninstall:
# 	@rm -f $(PREFIX)/bin/$(TARGET) 2> /dev/null