如何在Qt-Creator中正确使用mpfr/gmp? [英] How to use mpfr/gmp in Qt-Creator properly?

问题描述

你好，我想使用Qt-creator创建一个Qt5项目，并想使用mpfr/gmp，所以我需要如何配置该项目.

Hello I want to create a Qt5 project using Qt-creator and want to use mpfr/gmp so I need how to configure the project.

因为我编译时出现以下错误:

because if i compile I get these errors:

#include "mainwindow.h"

#include <QApplication>
#include <stdio.h>
#include <gmp.h>
#include <mpfr.h>



int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    mpfr_t x, y, z, t;
    mpfr_inits2 (256, x, y, z, t, (mpfr_ptr) 0);

    return a.exec();
}

输出:

 error: undefined reference to `mpfr_inits2'

但是在代码块上，我添加了include路径和库路径，并向编译器添加了-lgmp -lmpfr标志，并且工作正常.

But on codeblocks I add the include path and library path and add the flags -lgmp -lmpfr to the compiler and works fine.

推荐答案

在QtCreator中，打开项目的.pro文件并添加以下行:

In QtCreator, open the .pro file of your project and append the following line:

unix: LIBS += -lmpfr -lgmp

或者，您也可以使用UI来执行此操作:在项目"列表中，右键单击您的项目，选择添加库">系统库".在库文件"字段中添加例如/usr/lib/mpfr.so.然后，QtCreator将其转换为-lmpfr，如摘要"视图中所示.重复这些步骤以添加/usr/lib/libgmp.so.

Alternatively, you can also use the UI to do this: In the "Projects" list, right-click on your project, select "Add library" > "System Library". In the "Library file" field add e.g. /usr/lib/mpfr.so. QtCreator will then turn this into -lmpfr, as shown in the "Summary" view. Repeat these steps to add /usr/lib/libgmp.so as well.

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