问为什么gdb找不到任何调试符号，即使我在Makefile中的每个编译和链接阶段都有-g？

EN

all: main
    mkdir -p build/bin
    mkdir -p build/lib
    mkdir -p build/objects
    mv *.o build/objects
    mv *.a build/lib
    mv main build/bin

main: main.o liblinkedlist.a
    gcc main.o -g -o main -llinkedlist -L.

test: test.o liblinkedlist.a
    gcc test.o -g -o test -llinkedlist -L.
    mkdir -p build/bin
    mkdir -p build/lib
    mkdir -p build/objects
    mv *.o build/objects
    mv *.a build/lib

test.o: src/bin/test.c
    gcc src/bin/test.c -g -c -I include

main.o: src/bin/main.c
    gcc -g src/bin/main.c -c -I include

liblinkedlist.a: src/lib.c
    gcc src/lib.c -g -c -I include
    ar rs liblinkedlist.a lib.o

clean:
    rm -rf build
    rm -f test
    rm -f main