# ---------- Variables listed below --------- #

# Target directory
BUILD = build
# Paths to source, include, dependency, and object files
SRC = src
INC = inc
DEP = $(BUILD)/dep
OBJ = $(BUILD)/obj
ALL = $(SRC) $(INC) $(BUILD) $(DEP) $(OBJ)

# Executable
TARGET := $(BUILD)/main.out $(BUILD)/demo.so

# compiler and compiler flags
CC = g++
CFLAGS = -I$(INC)
SOFLAG = -fpic -shared -dynamic -ldl

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

# ----------- Targets listed below ---------- #
# Some targets aren't real
.PHONY: all clean run dump
# Don't autodelete object files:
.PRECIOUS: $(OBJ)/%.o

all: $(DEP) $(OBJ) $(TARGET)

dump:
	@echo "SOURCES: $(SOURCES)"
	@echo "OBJECTS: $(OBJECTS)"
	@echo " TARGET: $(TARGET)"
	@echo "  PATHS: $(ALL)"

clean:
	-rm -r $(BUILD)

run: $(TARGET)
	-$(addprefix ./,$(addsuffix ;,$(TARGET)))

# Create directories for output
$(BUILD) $(DEP) $(OBJ):
	mkdir -p $@

# Make the executable
$(BUILD)/%.out: $(OBJECTS)
	$(CC) $(CFLAGS) -o $@ $^
# Make the plugins
$(BUILD)/%.so: $(OBJ)/%.o
	$(CC) $(CFLAGS) $(SOFLAG) -o $@ $^
# Make the object and dependency files
$(OBJ)/%.o: $(SRC)/%.cpp
	$(CC) $(CFLAGS) -MMD -MF $(DEP)/$(@F:.o=.d) -o $@ -c $<


# --------- Inclusions listed below --------- #
# use dependencies when rebuilding
-include $(wildcard $(DEP)/*.d)