本文首发于个人博客https://kezunlin.me/post/91842b71/,欢迎阅读!

Part-1: Install and Configure Qt5 on Ubuntu 16.04

Series

Guide

  • qt: 5.7.0
  • qmake: 3.0 based on Qt 5.7.0
  • qtcreator: 3.5.1 based on Qt 5.5.1

purge existing qt5 and qt4

sudo apt-get purge qt5-default qtcreator
sudo apt-get purge qt4-designer qt4-dev-tools

install qt57

In addition, building graphical Qt applications requires OpenGL libraries and headers installed. On Ubuntu and other Debian-based Linux systems you can get OpenGL and the minimal set of development tools by installing the packages libgl1-mesa-dev and build-essential, i.e. by running this command:

sudo apt-get install build-essential libgl1-mesa-dev

Download qt and install.

sudo apt-get install build-essential libgl1-mesa-dev
wget http://download.qt.io/official_releases/qt/5.7/5.7.0/qt-opensource-linux-x64-5.7.0.run
chmod +x qt-opensource-linux-x64-5.7.0.run
./qt-opensource-linux-x64-5.7.0.run

install to /opt/Qt5.7.0

cd /opt
sudo ln -s /opt/Qt5.7.0 qt

add qt bin to path

vim .bashrc

# added by kzl
export PATH=/opt/cuda-8.0/bin:$PATH
export PATH=/opt/MATLAB/R2016b/bin:$PATH
export PATH=/opt/qt/5.7/gcc_64/bin:$PATH

qt.conf for ld.so.conf.d

cd /etc/ld.so.conf.d
sudo vim qt.conf /opt/qt/5.7/gcc_64/lib sudo ldconfig

or only install qtcreator (find_package error for qt5x11extra-config.cmake)

sudo apt-get install qt5-default qtcreator
sudo apt-get install qt4-designer qt4-dev-tools

qtchooser

add qt57.conf

cat /usr/share/qtchooser/qt57.conf 

/opt/qt/5.7/gcc_64/bin
/opt/qt/5.7/gcc_64/lib # link to qt57
cd /usr/lib/x86_64-linux-gnu/qtchooser
sudo ln -s /usr/share/qtchooser/qt57.conf qt57.conf

link to default

cd /usr/lib/x86_64-linux-gnu/qt-default/qtchooser

sudo rm default.conf
sudo ln -s /usr/share/qtchooser/qt57.conf default.conf
ls -l default.conf
default.conf -> /usr/share/qtchooser/qt57.conf

qt conf

/usr/share/qtchooser/

  • qt4-x86_64-linux-gnu.conf (FILE)
  • qt5-x86_64-linux-gnu.conf (FILE)
  • qt57.conf (FILE)

/usr/lib/x86_64-linux-gnu/qtchooser/

  • 4.conf (link)
  • 5.conf (link)
  • qt4.conf (link)
  • qt5.conf (link)
  • qt57.conf (link)

/usr/lib/x86_64-linux-gnu/qt-default/qtchooser/

  • default.conf (link) qt57.conf

qtchooser

which qtchooser
/usr/bin/qtchooser qtchooser -l 4
5
default
qt4-x86_64-linux-gnu
qt4
qt5-x86_64-linux-gnu
qt5

qtchooser env

qtchooser -print-env
QT_SELECT="default"
QTTOOLDIR="/opt/qt/5.7/gcc_64/bin"
QTLIBDIR="/opt/qt/5.7/gcc_64/lib"

export QT_QPA_PLATFORM_PLUGIN_PATH

vim .bashrc
export QT_QPA_PLATFORM_PLUGIN_PATH=/opt/qt/5.7/gcc_64/plugins/platforms

otherwise,errors may occur.

Failed to load platform plugin "xcb".

Qtcreator Tutorial

install qtcreator

sudo apt-get -y install qtcreator

qtcreator -version

Qt Creator 3.5.1 based on Qt 5.5.1

create application

Start qtcreator and create a Qt Widget Application named hello.

add resource file

Add a resource file named resource.qrc.

hello-->right click--> Add New... --->qt---> qt resource file---> name resource---> generate resource.qrc

and then import images to resource.qrc

Resources | resource.qrt--->right click---> Add Prefix...---> name /prefix
Resources | resource.qrt | /prefix--->right click ---> Add Existing Files... ---> choose images ---> OK

use resource in mainwindow.ui

button ---> property page ---> icon ---> Choose Resource... ---> select image ---> OK

Qt slots

method 1

steps:

mainwindow.ui ---> choose button ---> right click ---> Go to slot... ---> choose clicked() ---> OK

will add slots in mainwindow.h automatically

private slots:
void on_pushButtonOK_clicked();

and in mainwindow.cpp

void MainWindow::on_pushButtonOK_clicked()
{ }

Tips: if we use on_pushButtonOK_clicked style, there is no need to connect with slots in MainWindow constructor by hand.

method 2 (OK)

add slots in mainwindow.h by hand

private slots:
void pushButtonCancel_clicked();

and in mainwindow.cpp

void MainWindow::pushButtonCancel_clicked()
{ }

connect button with slot in mainwindow.cpp

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this); // connect
connect(ui->pushButtonCancel, SIGNAL(clicked()), this, SLOT(pushButtonCancel_clicked()));
}

Code Example

folder

folder structure like this:

$ tree hello/

hello/
├── CMakeLists.txt
├── hello.pro
├── hello.pro.user
├── images
│   ├── kezunlin_logo.png
│   ├── logo.svg
│   └── searchicon.png
├── main.cpp
├── mainwindow.cpp
├── mainwindow.h
├── mainwindow.ui
└── resource.qrc 1 directory, 11 files

code

mainwinow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H #include <QMainWindow> namespace Ui {
class MainWindow;
} class MainWindow : public QMainWindow
{
Q_OBJECT public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow(); private slots:
void on_pushButtonOK_clicked(); // method1
void pushButtonCancel_clicked(); // method2 private:
Ui::MainWindow *ui;
}; #endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h" #include <QMessageBox> MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this); // connect
connect(ui->pushButtonCancel, SIGNAL(clicked()), this, SLOT(pushButtonCancel_clicked()));
} MainWindow::~MainWindow()
{
delete ui;
} void MainWindow::on_pushButtonOK_clicked()
{
QString text = ui->lineEditName->text();
QMessageBox::information(this, "OK", text);
ui->pushButtonOK->setText( tr("(OK. click me)") );
} void MainWindow::pushButtonCancel_clicked()
{
QString text = ui->lineEditName->text();
QMessageBox::information(this, "Cancel", text);
ui->pushButtonCancel->setText( tr("(Cancel.click me)") );
}

main.cpp

#include "mainwindow.h"
#include <QApplication> int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show(); return a.exec();
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8.8)

project(helloworld)

# Find includes in corresponding build directories
set(CMAKE_INCLUDE_CURRENT_DIR ON)
# Instruct CMake to run moc automatically when needed.
set(CMAKE_AUTOMOC ON) # ${QT_INCLUDE_DIRS} ${QT_LIBRARIES} and so on are all Qt4 Macro Definitions!!!!!
# Find the QtWidgets library
find_package(Qt5Core)
find_package(Qt5Widgets)
find_package(Qt5Gui)
find_package(Qt5OpenGL)
find_package(Qt5Xml) #message( [qt] ${Qt5Core_INCLUDE_DIRS} )
#message( [qt] ${Qt5Core_LIBRARIES} )
#message( [qt] ${Qt5Widgets_INCLUDE_DIRS} )
#message( [qt] ${Qt5Widgets_LIBRARIES} ) # cpp files
aux_source_directory(. SRC_LIST) # ui files
qt5_wrap_ui(ui_FILES mainwindow.ui)
# resource files
qt5_add_resources(qrc_FILES resource.qrc) message( [Main] ${SRC_LIST} ) # ./main.cpp./mainwindow.cpp
message( [Main] ${ui_FILES} ) # build/ui_mainwindow.h
message( [Main] ${qrc_FILES} )# build/qrc_resource.cpp # Tell CMake to create the helloworld executable
add_executable(${PROJECT_NAME} ${SRC_LIST} ${ui_FILES} ${qrc_FILES}) qt5_use_modules(${PROJECT_NAME} Core Widgets OpenGL Xml Gui) # Use the Widgets module from Qt 5.
#qt5_use_modules(helloworld Widgets) # link other libraries
#target_link_libraries (${PROJECT_NAME} ${SPEC_OPENCV_LIBS})

CMakeLists.txt 2

cmake_minimum_required(VERSION 3.0)

set(PROJECT_NAME demo)

set(CMAKE_BINARY_DIR ${CMAKE_SOURCE_DIR}/bin)  # bin/

set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR})
set(LIBRARY_OUTPUT_PATH ${CMAKE_BINARY_DIR}) set(CMAKE_CXX_STANDARD 11)
#set(CMAKE_PREFIX_PATH ${QTDIR})
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTORCC ON) # QT5_DIR /opt/Qt5.7.0/5.7/gcc_64/lib/cmake/Qt5
find_package(Qt5 REQUIRED Widgets Core Gui Network OpenGL)
find_package(OpenCV REQUIRED COMPONENTS core highgui imgproc features2d calib3d )
find_package(Protobuf REQUIRED) # 3.6.1
find_package(VTK REQUIRED) # 8.1.2
include(${VTK_USE_FILE}) MESSAGE( [Main] " VTK_INCLUDE_DIRS = ${VTK_INCLUDE_DIRS}")
MESSAGE( [Main] " VTK_LIBRARIES = ${VTK_LIBRARIES}") find_package(PCL REQUIRED) # 1.9.1
#find_package(PCL REQUIRED COMPONENTS common io filters visualization) link_directories(${PCL_LIBRARY_DIRS})
add_definitions(${PCL_DEFINITIONS}) message ([main] "PCL_DIR = ${PCL_DIR}")
message ([main] "PCL_FOUND = ${PCL_FOUND}")
message ([main] "PCL_INCLUDE_DIRS = ${PCL_INCLUDE_DIRS}")
message ([main] "PCL_LIBRARIES = ${PCL_LIBRARIES}") message ([main] "PCL_LIBRARY_DIRS = ${PCL_LIBRARY_DIRS}")
message ([main] "PCL_COMMON_LIBRARIES = ${PCL_COMMON_LIBRARIES}")
message ([main] "PCL_IO_LIBRARIES = ${PCL_IO_LIBRARIES}")
message ([main] "PCL_FILTERS_LIBRARIES = ${PCL_FILTERS_LIBRARIES}")
message ([main] "PCL_VISUALIZATION_LIBRARIES = ${PCL_VISUALIZATION_LIBRARIES}") include_directories(
./ # current folder # ${GFLAGS_INCLUDE_DIRS}
# ${GLOG_INCLUDE_DIRS}
# ${GTEST_INCLUDE_DIRS}
${PROTOBUF_INCLUDE_DIRS}
${Boost_INCLUDE_DIRS}
${OpenCV_INCLUDE_DIRS}
${VTK_INCLUDE_DIRS}
${PCL_INCLUDE_DIRS}
) set(SOURCE_FILES
main.cpp
MainWindow.cpp
./proto/camera_image.pb.cc
./proto/point_cloud.pb.cc
) set(RESOURCE_FILE resource.qrc) add_executable(${PROJECT_NAME} ${SOURCE_FILES} ${RESOURCE_FILE}) target_link_libraries(${PROJECT_NAME}
Qt5::Widgets Qt5::Gui Qt5::Core Qt5::OpenGL Qt5::Network
${Boost_LIBRARIES}
${PROTOBUF_LIBRARIES}
${OpenCV_LIBRARIES}
${VTK_LIBRARIES}
${PCL_LIBRARIES}
pthread
rt
)

cmake

cd hello
mkdir build
cd build
cmake ..
make

run

./helloworld

screen snapshot like this:

Reference

History

  • 20180108: created.

Copyright

[Part 1] Ubuntu 16.04安装和配置QT5 | Part-1: Install and Configure Qt5 on Ubuntu 16.04的更多相关文章

  1. ubuntu 16.04源码编译和配置caffe详细教程 | Install and Configure Caffe on ubuntu 16.04

    本文首发于个人博客https://kezunlin.me/post/b90033a9/,欢迎阅读! Install and Configure Caffe on ubuntu 16.04 Series ...

  2. Ubuntu 16.04 安装和配置 Redis

    因为发现之前手动安装的 redis 与现有的教程不一样,所以总结统一一下安装的标准步骤. 安装依赖项 为了获取最新版本的 Redis,我们将从源代码进行编译和安装.下载源代码之前,需要先安装一些编译所 ...

  3. Ubuntu 18.04 安装、配置和美化

    本文章修改自inkss的博文 为什么要修改原文? 本来我是想自己写这么一篇的,但是没想到在百度一搜,居然一篇好文.我之前没看到,真是可惜. 这篇文章主要是帮助我记录一些东西,如题. 原文虽然不错,但是 ...

  4. Ubuntu 16.04LTS 安装和配置Bochs

    环境:VMWare14+Ubuntu16.04 安装Bochs2.6.9 1.去官网下载 下载 bochs-2.6.9.tar.gz 2.安装一系列的包 因为Bochs 需要在 X11 环境下运行,因 ...

  5. Ubuntu系统下安装并配置hive-2.1.0

    说在前面的话 默认情况下,Hive元数据保存在内嵌的Derby数据库中,只能允许一个会话连接,只适合简单的测试.实际生产环境中不使用,为了支持多用户会话, 则需要一个独立的元数据库,使用MySQL作为 ...

  6. [转]:Ubuntu 下Apache安装和配置

    [转]:Ubuntu 下Apache安装和配置_服务器应用_Linux公社-Linux系统门户网站  https://www.linuxidc.com/Linux/2013-06/85827.htm ...

  7. ubuntu server nginx 安装与配置

    ubuntu server nginx 安装与配置 一:关于nginx http://wiki.ubuntu.org.cn/Nginx http://nginx.org/cn http://wiki. ...

  8. P6 EPPM 16 R1安装和配置文档

    白桃花心木P6企业项目组合管理文档库  描述 链接 下载 零件号  16 R1用户和集成文档 查看库 下载 E68199-01 16 R1安装和配置文档 查看库 下载 E68198-01 描述 链接 ...

  9. Ubuntu 16.04安装和配置Sublime Text 3

    1.安装Sublime Text 3 首先添加sublime text 3的仓库: sudo add-apt-repository ppa:webupd8team/sublime-text-3 根据提 ...

随机推荐

  1. C# 表达式树 Expression

    表达式树是定义代码的数据结构. 它们基于编译器用于分析代码和生成已编译输出的相同结构. 几种常见的表达式 BinaryExpression 包含二元运算符的表达式 BinaryExpression b ...

  2. vue实现rsa加密,数字签名,md5加密等

    一.使用jsencrypt进行rsa加密 原文链接:Js参数RSA加密传输,jsencrypt.js的使用 - CSDN博客 *(原文处有一个地方不对,不需要转换+,rsa已经做过base64转码了) ...

  3. Swagger -- 解决日期不正确

    继  Swagger--解决日期格式显示为Unix时间戳格式 UTC格式 这篇博客解决的日期格式后又发现了一个问题 问题 查询出来的时间没有注意到足足少了8个小时,如图 解决 其实这个问题不是Swag ...

  4. spring cloud 面试题总结

    前言,随着分布式的时代到来,现在微服务越来越火了,Spring Cloud已经成为一个面试必问的考点,下面我们就Cloud这一些列的组件来一个入门到面试的过程.开篇前,先让大家看几个常见的Spring ...

  5. Splash的使用

    Splash Lua脚本http://localhost:8050 入口及返回值 function main(splash, args) splash:go("http://www.baid ...

  6. Windows 程序包管理器 Chocolatey:一条命令装软件

    Windows 程序包管理器 Chocolatey:一条命令装软件 本文原始地址:https://sitoi.cn/posts/46278.html 介绍 Chocolatey 是一种软件管理解决方案 ...

  7. crontab中部署Python脚本注意事项

    有时候手工执行Python脚本跑的好好的,但是部署到Linux的crontab中后,就会遇到一些问题,最近终于有空整理一下这方面的内容,其实也是自己也踩了一些别人踩过的坑!这里仅仅列举个人遇到的一些小 ...

  8. 星级评分条(RatingBar)的功能与用法

    星级评分条与拖动条有相同的父类:AbsSeekBar,因此它们十分相似.实际上星际评分条与拖动条的用法.功能都十分接近:它们都允许用户通过拖动来改变进度.RatingBar与SeekBar的最大区别在 ...

  9. C++学习笔记10_输入输出流.文件读写

    //从键盘输入到程序,叫标准input:从程序输出到显示器,叫标准output:一并叫标准I/O //文件的输入和输出,叫文件I/O cout<<"hellow word&quo ...

  10. C标准库stdlib.h概况

    库变量 size_t  这是无符号整数类型,它是 sizeof 关键字的结果 wchar_t  这是一个宽字符常量大小的整数类型. div_t  这是 div 函数返回的结构 ldiv_t  这是 l ...