Qt 外部库 undefined reference to
WebSep 25, 2024 · (.text+0x13): undefined reference to `func' 关于undefined reference这样的问题,大家其实经常会遇到,在此,我以详细地示例给出常见错误的各种原因以及解决方法,希望对初学者有所帮助。 基础问题 链接时缺失了相关目标文件(.o) WebApr 8, 2024 · Check your linker options to make sure you have included all of the necessary libraries or object files. If the undefined classes are QObject-based, make sure that MOC has been run to generate the moc*.cpp files and that these are also being compiled. Sometimes a qmake / make clean is needed. <=== The Great Pumpkin says ===>.
Qt 外部库 undefined reference to
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WebApr 22, 2014 · QT构建编译出现error: undefined reference to时,请先确认语法是否有错(建议单独新建一个项目只检查出错的代码是否语法有误)。. 本文由Coding库丁原创,如果 … WebJul 24, 2011 · QtCreator: undefined reference to ... also arbeite gerade daran für ein C++/OpenGL Programm eine Oberfläche in Qt zu basteln. Ich habe alle meine Header und Source Dateien dem Projekt hinzugefügt, ebenso die erstelleten *.ui-Dateien mit den zugehörigen *.h und *.cpp-Dateien. Desweiteren hab ich in der .pro-datei noch.
WebNov 18, 2024 · make install will copy headers, .lib and .dll to the correct position in your Qt tree. Afterwards you can add QT += mqtt (I guess) in your pro file and all should be fine … WebSep 1, 2016 · Qt是由Qt Company开发的主流跨平台C++图形用户界面应用程序开发框架。Qt是面向对象的框架、容易扩展,并且允许真正地组件编程,既可以开发GUI程序,也可 …
WebApr 12, 2024 · undefined reference to `vtable for. 问题:出现上述错误提示。. 方法:添加 Q_OBJECT 以后没有生成 MOC 。. 报错如下: 网上关于这个问题的解决基本上都是说,该基类中的虚函数,没有被子类继承导致。. 但是这完全不是我遇到的情况,因为我在子类中确实已经全部实现了 ... WebJul 10, 2024 · Undefined reference to 错误:这类错误是在连接过程中出现的,可能有两种原因∶. (1)是使用者自己定义的函数或者全局变量所在源代码文件,没有被编译、连接;. …
WebAug 28, 2024 · 问题描述 通过mingw64制作静态或者动态C语言库,QT调用该C库出现undefined reference to xxx和xxx@4错误信息,无法解决。 排查步骤: 1、检查QT工程下 …
Web在QT框架代码里使用老版本的分类器(cvLoad、cvHaarDetectObjects)处理图像时,正常编译没有问题,当使用新版本级联分类器(CascadeClassifier)时,程序编译就会出现一堆没有 … harnessip.comWebJan 11, 2024 · 三、解决办法. 方法1: 使用当前QT使用的MinGW编译器,重新编译一份OpenCV的源码再使用。. 方法2: 使用已经编译好的MinGW版本OpenCV库,直接调用。. … chapter 3 season 3 startWebSep 24, 2024 · I implemented and verified two solutions to this. First, I tweaked my PATH environmental variable to compile all personal libraries with the Qt-delivered g++. That resolved the issue. Second, I built Qt 5.9.1 from source using my installed and more recent versing of g++ from MinGW 6.3.x. chapter 3 season 3 shotgunsWebApr 22, 2013 · QT shared library undefined reference to. I'm studying linking shared libraries in QT, tried tutorials but nothing works. Can somebody help me to find a mistake? I have … chapter 3 season 3 updateWebMar 30, 2016 · 当出现 undefined reference to xxx时,对应的lib库已经添加到LOCAL_STATIC_LIBRARIES里面,且头文件已经已经添加时,仍然报 undefined reference to, 请看下面;(下面的两种情况,每一种都是让我百思不得其解,花费将近一天时间才解决的,希望能帮助开发者们!)1、LOCAL_STATIC ... harness io courseWebJan 3, 2011 · The constructor is probably declared in TabSprite.h (although your code doesn't show that). That's why it compiles. But the constructor isn't defined anywhere, or, less likely, the unit where it is defined isn't included in the linking process. That's why it … chapter 3 season 4 mythicsWeb定位链接找不到符号定义. 回到开头的报错. undefined reference to `google_breakpad::SetFirstChanceExceptionHandler (bool (*) (int, siginfo_t*, void*))'collect2: error: ld returned 1 exit status. 这个报错说明了,我们是在链接的时候出的问题,没有找到函数SetFirstChanceExceptionHandler的定义 ... chapter 3 season 3 theme