Qt on the BeagleBone Black

Install cross-compilation tools as described here.


On Debian PC, install Qt 4 dev tools:

sudo apt-get install qt4-dev-tools gdb-multiarch

Install and build Qt source v4.8 and build it for the BeagleBone:

As user (not root):

Download latest 4.x version of source:
http://download.qt.io/official_releases/qt/4.8/

I used:

wget http://download.qt.io/official_releases/qt/4.8/4.8.6/qt-everywhere-opensource-src-4.8.6.tar.gz

Untar it:

tar -xzf qt-everywhere-opensource-src-4.8.6.tar.gz

Rename the folder to something more convenient:

mv qt-everywhere-opensource-src-4.8.6 qt-4.8.6-beagle

Go to the folder:

cd qt-4.8.6-beagle

Copy the folder:

cp -r mkspecs/linux-arm-gnueabi-g++/ mkspecs/linux-arm-gnueabihf-g++/

Edit the qmake.conf file:

nano mkspecs/linux-arm-gnueabihf-g++/qmake.conf

Change all references of “arm-linux-gnueabi” to “arm-linux-gnueabihf”  (add the “hf”)
For instance, arm-linux-gnueabi-gcc becomes arm-linux-gnueabihf-gcc.
Save the file and exit.

In the root of the new qt directory, create a config script file:

nano config

Add the line:

./configure -v -opensource -confirm-license -xplatform linux-arm-gnueabihf-g++ -embedded arm -little-endian -host-little-endian -prefix /usr/local/qt4.8.6-armhf

Save and exit.

Make it executable:

chmod 700 config

Configure, build, and install:

./config
make
sudo make install

If you need to re-run config, perhaps to change some options:

make confclean
make clean
./config
make
sudo make install

Install Qt Creator:

Still as user (not root), download the latest version.  When this was written, it was:

cd
wget http://download.qt.io/official_releases/qt/5.4/5.4.1/qt-opensource-linux-x64-5.4.1.run

Make it executable:

chmod 700 qt-opensource-linux-x64-5.4.1.run

Run it.

./qt-opensource-linux-x64-5.4.1.run

On the target BeagleBone, install Debian via the eMMC flasher image:
BBB-eMMC-flasher-debian-7.5-2014-05-14-2gb.img

Then, install basic compilers and Qt4 on the BeagleBone:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install build-essential
sudo apt-get install qt4-dev-tools

Create a destination directory on the BeagleBone for the Qt libraries:

sudo mkdir /usr/local/qt4.8.6-armhf

Copy from the PC to the BeagleBone:

On PC (Debian VM):

scp -r /usr/local/qt4.8.6-armhf/* root@beaglebone:/usr/local/qt4.8.6-armhf

When creating new Qt projects, modify PROJECT.pro to look like:

TARGET = ProjectName
 target.files = ProjectName
 target.path = /home/debian/sandbox/ProjectName
 TEMPLATE = app
 INSTALLS += target

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