Qmake生成的Makefile中缺少QtWebKit依赖项 [英] QtWebKit dependency missing from qmake generated Makefile

问题描述

我刚刚开始使用Qt(在C ++中)，所以我遵循了我在网上找到的"hello，world"示例.我在hello目录中创建了程序hello.cpp:

I just started working with Qt (in C++), so I followed a "hello, world" example I found online. I created the program hello.cpp in the directory hello:

#include <QtGui>

int main(int argc, char *argv[]) {
    QApplication app (argc, argv);
    QLabel label ("Hello, world!");
    label.show();
    return app.exec();
}

我跑了

qmake -project
qmake hello.pro
make

一切都正确编译，我可以运行./hello了.然后，作为一个有冒险精神的人，我尝试修改文件:

and everything compiled correctly and I was able to run ./hello. Then, being an adventurous person, I tried modifying the file:

#include <QtGui>
#include <QtWebKit>

int main(int argc, char *argv[]) {
    QApplication app (argc, argv);
    QLabel label ("Hello, world!");
    QWebPage page;
    label.show();
    return app.exec();
}

我重新运行了三个命令，但是现在当我运行make时，出现以下错误:

I reran the three commands, but now when I run make I get the following error:

hello.cpp:2: fatal error: QtWebKit: No such file or directory
compilation terminated.
make: *** [hello.o] Error 1

我检出了Makefile，并将INCPATH变量定义为

I checked out the Makefile and the INCPATH variable was defined as

INCPATH = -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4 -I. -I.

它明显缺少-I/usr/include/qt4/QtWebKit. LIBS变量也缺少-lQtWebKit.手动添加这些会导致编译成功.我究竟做错了什么?我需要添加什么才能使qmake生成正确的Makefile?

It is noticeably missing -I/usr/include/qt4/QtWebKit. The LIBS variable was also missing -lQtWebKit. Adding these manually causes the compilation to succeed. What am I doing wrong? What do I need to add to make qmake generate the correct Makefile?

推荐答案

您需要添加:

QT += webkit

到您的.pro文件，然后重新运行qmake.

to your .pro file, and re-run qmake.

qmake -project不会尝试猜测代码中需要哪些模块.

qmake -project does not try to guess what modules you need in your code.

如果您有多个模块，通常的语法如下:

If you have more than one module, the usual syntax is like:

QT += webkit xml network

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