In my makefile I have an object variable. I need to prepend obj/ to every .o file. How would I do this?

CC=g++
CFLAGS=-C -Wall
LDFLAGS=-lsqlite3 -lpthread -ldl
SOURCES=main.cpp Database.cpp actionInit.cpp TileSet.cpp Player.cpp
OBJECTS=$(SOURCES:.cpp=.o)

EXECUTABLE=mahjong-counter

all: bin $(OBJECTS) $(EXECUTABLE)

bin:
    mkdir -p bin

%.o: %.cpp
    $(CC) $(LDFLAGS) $< -c -o $@

$(EXECUTABLE): $(OBJECTS)
    $(CC) $(LDFLAGS) $(OBJECTS) -o $(EXECUTABLE)

clean:
    rm $(OBJECTS)
g++ makefile
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