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
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
