学习 QT，尝试链接静态库，但怎么都链接不上，请教一下大佬们这是怎么回事

QT creator 12.0.2 Based on QT 6.6.0 windows 10

windows git bash 输出的各个文件名 test 是自己的测试用的静态库 target 是可执行文件项目 libtest.a 已经生成了

[pj]$ ls target/*
target/main.cpp  target/target.pro  target/target.pro.user  target/widget.cpp  target/widget.h  target/widget.ui
[pj]$ ls test/*
test/test.cpp  test/test.h  test/test.pro  test/test.pro.user  test/test_global.h
[pj]$ ls build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/*
build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/Makefile        build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/Makefile.Release
build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/Makefile.Debug

build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/debug:
libtest.a  test.o

build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/release:

以下是 test.pro, 我加了CONFIG += staticlib，现在在build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/debug下只会生成 libtest.a ，不会生成 test.dll

QT -= gui

TEMPLATE = lib
DEFINES += TEST_LIBRARY

CONFIG += c++17

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    test.cpp

HEADERS += \
    test_global.h \
    test.h

CONFIG += staticlib
# Default rules for deployment.
unix {
    target.path = /usr/lib
}

!isEmpty(target.path): INSTALLS += target

我在默认的 target.pro 中添加了如下内容用来链接 libtest.a

win32: LIBS += -L$$PWD/../build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/debug/ -ltest

INCLUDEPATH += $$PWD/../test
DEPENDPATH += $$PWD/../test

win32:!win32-g++: PRE_TARGETDEPS += $$PWD/../build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/debug/libtest.a
else:win32-g++: PRE_TARGETDEPS += $$PWD/../build-test-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/debug/libtest.a

main.cpp

#include "widget.h"
#include "test.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    Test t;
    t.print();  // print 是 test 的 public 函数，用 qDebug 输出函数名

    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}

编译报错 undefined reference, 应该是链接不到 libtest.a：

:-1: error: debug/main.o: in function `qMain(int, char**)':
D:\Qt\pj\target\main.cpp:7: error: undefined reference to `__imp__ZN4TestC1Ev'
:-1: error: D:\Qt\pj\build-target-Desktop_Qt_6_6_3_MinGW_64_bit-Debug/../target/main.cpp:8: undefined reference to `__imp__ZN4Test5printEv'
:-1: error: collect2.exe: error: ld returned 1 exit status
:-1: error: [Makefile.Debug:72: debug/target.exe] Error 1

不知道我是不是少了什么设置

如果以上描述不到位，这是两个项目的文件。先构建 test ，后运行 target https://drive.google.com/file/d/1FxtwscpdG9Atj2-YnAnR-CCKcmIwx0P7/view?usp=drive_link