Exactscan Pro 20 2 3 Qt

1. Exactscan Pro 20 2 3 Qt Instant Pot
2. Exactscan Pro 20 2 3 Qtc

1. Introduction
   1. Qt 5
      1. Qt For Device Creation
      2. Build with OpenEmbedded Layers
         1. Build and Deploy the Target Image
         2. Configure Qt Creator
      3. Boot to Qt for Embedded Linux
   2. Qt 4.8
      1. Install the SDK

This article describes how to build and configure a Qt Creator development environment on Linux to cross compile Qt applications for OpenEmbedded based root file systems. Qt Creator itself can be taken from your distributions repository, or its installer downloaded at Qt website under open-source or commercial licenses.

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If you starting with Qt, this article may not provide the best user experience, though it is a comprehensive source of information. For a developer-friendly experience you can either follow:

• Partner Demo Image - Qt for Device Creation - using a pre-built evaluation image provided by The Qt Company and available on the Toradex Easy Installer online feeds.
• Qt Debian Container for Torizon - consider using Torizon for a simplified user-experience.

Qt Licensing Information

Qt is a large framework with different licenses. Licenses also depend on which Qt version is used. Our partner, the Qt Company, can help you find the right license, therefore if you have questions consult the Qt Licensing page for details.

Note: Install the Partner Demo Image - Qt for Device Creation (Boot to Qt) for selected target modules using the Toradex Easy Installer.

• Qt Creator IDE

Qt 5

Install Qt Creator

Exactscan Pro 20 2 3 Qt Instant Pot

Qt Creator provides a complete Integrated Development Environment for application developers to create applications for multiple targets such as embedded systems, mobile devices, desktops. One can install Qt Creator from its installer or from your distribution repository. Choose your option from the tabs below:

To install Qt Creator from its installer, download it according to the chosen license. Make sure that you always have the latest release installed.

Run the installer:

Note: It might be necessary to change the installer file mode to executable.

The commercial license enables Qt For Device Creation which provides a set of ready-to-use tools for developing in Qt Creator IDE for embedded systems such as Yocto based Boot to Qt pre-built images and cross-compilation toolchains for a series of target devices (Apalis iMX8 and iMX6, Colibri iMX6 and iMX7). These components must be installed during Qt Creator installation.

• Installing Qt for Device Creation (click to enlarge)

For further information about Qt for Device Creation, refer to Partner Demo Image - Qt for Device Creation.

Ubuntu 18.04 provides Qt Creator 4.5.2, which is sufficiently recent for this how-to.

Attention: it is preferred that you always use the latest Qt Creator version, available in the tab Qt Creator Installer. Customers using Ubuntu 16.04 LTS have reported issues due to the old version of Qt Creator available from the distribution repository. Inet network scanner 2 7 0 7.

Visit the Qt Creator Manual for further information about the IDE and its features according to the given license.

Once Qt Creator is installed in the host machine, it is necessary to have a Qt-enabled target device image as well as a built Software Development Kit (SDK). At last, this SDK must be configured in Qt Creator in order to build and deploy applications in your target module.

In order to have a Qt enabled target device image and SDK, it is possible to go with one of the following options:

• Qt For Device Creation: a commercial offering that provides the Qt development framework for multiple embedded platforms.
• Build with OpenEmbedded Layers: build a customized image and toolchain based in OpenEmbedded layers and Toradex Linux BSP.
• Boot to Qt for Embedded Linux: build a customized image and toolchain based in Qt layers and Toradex Linux BSP.

Each one of the options has its steps described in the tabs below:

Qt For Device Creation

Build and Deploy the Target Image

For Qt 5, one can install a Boot to Qt pre-compiled evaluation image directly from Toradex Easy Installer. With the commercial license of Qt For Device Creation, you will also get access to the QBSP - the SDK ready-to-use with Qt Creator.

In case Toradex Easy Installer is not available for your module, get your image into an SD card in a couple of clicks going to the Qt Creator top bar option Tools → Flash Boot to Qt device.

Build the SDK for development

We need to have a full Qt toolchain, which provides besides cross GCC and GDB also the Qt headers to include and libraries to link against. With the commercial Qt For Device Creation, you can use the pre-compiled QBSP for evaluation.

Either if you are going to install the pre-compiled QBSP for evaluation, or if you already need to build your own custom QBSP with specific dependencies for your application, please refer to the Boot to Qt installation guides. The article Building Your Own Embedded Linux Image may be particularly useful, especially after the evaluation phase when you must build your own QBSP.

Configure Qt Creator

The QBSP makes it very easy to configure Qt Creator. Read the Qt for Device Creation Installation Guides. For setting-up the pre-compiled QBSP there are two options:

• If you have a Boot to Qt reference target device, you just need to tick a box on the Qt Creator installation (or using the Maintenance Tool), as explained on the Toradex Apalis iMX6 Guide.
• If you have other embedded target hardware, you can download a QBSP from your account on https://account.qt.io/downloads and then use the Maintenance Tool to install it, as explained in the Toradex Colibri iMX6, iMX6ULL and iMX7 Guide.

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Build with OpenEmbedded Layers

Build and Deploy the Target Image

For BSP 5, our Reference Images for Yocto Project, more specifically the Multimedia Reference Image, comes with all the Qt5 packages included in packagegroup-tdx-qt5.bb. You can tweak this image to add or remove packages, including Qt5 packages.

For evaluation, you can install the pre-built image from our Toradex Easy Installer feeds. But do notice that we don't provide a pre-built QBSP/SDK for this image, you have to build it by yourself.

Refer to the article Build a Reference Image with Yocto Project to learn how to build and customize the Multimedia Reference Image, and generate an SDK for it.

Add Qt5 packages to other image targets

For BSP 5, please use the Multimedia Reference Image as the base for customization, as explained the previous section.

Build and Install the SDK for development

You may find it useful to read the Toradex article Build a Reference Image with Yocto Project and The Qt Company article Building Your Own Embedded Linux Image.

Configure Qt Creator

It is recommended that you build a QBSP and and install it as described in the Qt For Device Creation section from this article. If you only build a regular SDK with OpenEmbedded/Yocto, then you may find some tips the legacy information below, though it is not guaranteed to work:

Boot to Qt for Embedded Linux

Warning: Boot to Qt for Embedded Linux is not maintained nor supported by Toradex. You can post your question in the Qt Forum, or contact The Qt Company support if using a commercial license.

Build and Deploy the Target Image

For Qt 5, one can install a Boot to Qt evaluation image directly from Toradex Easy Installer. Read the article Partner Demo Image - Qt for Device Creation (Boot to Qt) to learn more.

To build a custom Boot to Qt image, it is necessary to setup an environment on your host PC to build images with the Yocto Project-based on Toradex BSP and Boot to Qt for embedded Linux.

Please refer to Build Your Own Embedded Linux Image article to solve the dependencies associated to the environment and complete this setup according to your host operating system.

Qt 4.8

Note: this section is limited up to the BSP 2.8. Qt 4 is not integrated with BSP 3 onwards, nor instructions on how to do it are provided.

Install Qt Creator

Using Ubuntu

Current long-term release (Ubuntu 18.04) provides Qt Creator 4.5.2, which is sufficient recent for this how-to.

Using Fedora

Build and Deploy the Target Image

On the target module, you will need the Qt runtime environment installed. Therefore a new image with the Qt run-time libraries to allow executing Qt applications on the target is required. This step is mandatory!

To build a Qt 4.8 enabled image, it is necessary to set up an environment on your host PC to build images with Yocto Project based on the OpenEmbedded layers and Toradex BSP. Please refer to the OpenEmbedded (core) article to solve the dependencies associated with the environment and complete this setup according to your host operating system.

There are two target images with Qt 4.8 packages available - angstrom-qt-x11-image : for Qt X11 image (recommended for Tegra and i.MX6 based modules)- qt4e-demo-image: for Qt Embedded image (recommended for VFxx)

To build them, run

Build the SDK for development

Build the SDK for development

Note: See also Linux SDKs

In order to compile the required libraries, a full OpenEmbedded build environment need to be in place at first (see the Build and Deploy the Target Image for Qt).

We need to have a full Qt toolchain, which provides beside cross GCC and GDB also the Qt headers to include and libraries to link against.

The Qt 4.8 Embedded is still useful for devices without any graphical acceleration or with drivers providing this also to users relying on the frame buffer device. With the modules based on T20/T30 the drivers for hardware-accelerated 3D and video decoding are only available for an X11 system, so you probably want to use Qt on X11.

Install the SDK

Install the Qt toolchain on your development computer (replace x86_64 with i686 if you use a 32-bit machine):

Configure Qt Creator

Before starting Qt Creator, we have to export some build environment variables. Qt uses special configuration files to describe the built environment called mkspecs (they specify which compiler, linker, or other tools to use). However, this configuration files still need to know where the compiler (or cross-compiler in our case) is located. The SDK created a script that does all the hard work.

Aiseesoft mac video enhancer 9 2 16 free. Using the SDK built with OpenEmbedded layers, source the script as follows:

Warning: It is required to source the script to export the environment variables every time in the same terminal session you run Qt Creator

The environment variable OE_QMAKE_CXX should then show something along this line:

Now, start Qt Creator in the shell where you sourced the script.

Add the Target Device

Go to Tools → Options. In the left panel, click on Devices and add a new device representing the target Colibri Module:

• Press Add and choose Generic Linux Device
  • Specifiy a name (e.g. Colibri VF61)
  • Fill in the device's IP address
  • Authentication on our modules by default: Password, User 'root', empty password

• Qt Creator - Devices

Add Kit

In the left panel, click on Build & Run and configure in the following tabs:

• Qt Versions:
  • Press Add
  • Choose /usr/local/oecore-x86_64/sysroots/x86_64-angstromsdk-linux/usr/bin/qmake2
  • Fill in a name

• Qt Creator - Qt Versions

• Compilers:
  • Press Add =>Gcc
  • Name: GCC (Qt Embedded)
  • Compiler path: /usr/local/oecore-x86_64/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-g++
  • ABI (should be detected automatically): arm-linux-generic-elf-32bit

• Qt Creator - Compilers

• Debuggers:
  • Press Add
  • Name: GDB (Qt Embedded)
  • Path: /usr/local/oecore-x86_64/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gdb

• Qt Creator - Debuggers

• Kit
  • Press Add
  • Name: Toradex Qt Embedded
  • Device: Colibri VF61
  • Sysroot: /usr/local/oecore-x86_64/sysroots/armv7at2hf-vfp-neon-angstrom-linux-gnueabi
  • Compiler: GCC (Qt Embedded)
  • Debugger: GDB (Qt Embedded)
  • Qt version: Qt 4.8.6 (Toradex BSP Qt Embedded)
  • Qt mkspec: leave empty

• Qt Creator - Kits

Now one can create a new project using the new Kit. Qt Creator automatically configures build configurations for the cross-compiling Kit.

To make sure that the binaries get deployed to the root home folder, add the following to your .pro file:

If you have an existing project, you can configure Build & Run Configurations under the Project tab on the left side. Go to Add Kit, we can now use the newly created Kit Toradex Qt Embedded.

Note: When using Qt Embedded, you may want to switch to the 'Run' configuration and add the argument '-qws' to the binary as standalone (instead of using the Qt for Embedded Linux server).

Other references

See also