# Executable
TARGET := main.out

# Paths to source, include, dependency, and object files
SPATH = src
IPATH = inc
DPATH = dep
OPATH = obj

VPATH = $(SPATH) $(IPATH) $(DPATH) $(OPATH)

# compiler and compiler flags
CC = g++
CFLAGS = -MMD -I$(IPATH) -pthread -lrt

# list of object files
SOURCES = $(wildcard $(SPATH)/*.cpp)
OBJECTS = $(addprefix $(OPATH)/,$(notdir $(SOURCES:.cpp=.o)))

.PHONY: all clean dump

all: $(DPATH) $(OPATH) $(TARGET)

dump:
	@echo SOURCES: $(SOURCES)
	@echo OBJECTS: $(OBJECTS)
	@echo TARGET:  $(TARGET)
	@echo VPATH:   $(VPATH)

clean:
	-rm $(TARGET)
	-rm -r dep obj

$(DPATH) $(OPATH):
	mkdir -p $@

# Make the executable(s)
%.out: $(OBJECTS)
	$(CC) $(CFLAGS) -o $@ $^
# Make the object and dependency files
$(OPATH)/%.o: $(SPATH)/%.cpp
	$(CC) $(CFLAGS) -MF $(DPATH)/$(@F:.o=.d) -o $@ -c $<

# Don't autodelete object files:
.SECONDARY: $(OPATH)/%.o

# use dependencies when rebuilding
-include $(wildcard $(DPATH)/*.d)