Developers Documentation

• Git Repository
• README
• Dttsp
• A Very good video tutorial series on using QT and C++
• A Brief Description on the architecture of ghpsdr3
• Ghpsdr3 communication protocols 2010-08-07
• More on the Ghpsdr communications protocols (and more up to date)
• dspserver.conf The dspserver.conf file has it's own page

Most of the development discussion has been taking place on the sdr-widget google group.

Installing Qt5

You need to add the unsupported packages to your system. It will exist as a stand alone system separate from any other version of qt or creator etc. that you may have installed.

1. Adding the qt5 “Canonical Qt5 Edgers” ppa to your system

In a terminal, copy and paste ...

sudo add-apt-repository ppa:canonical-qt5-edgers/qt5-daily

Your system will now fetch the PPA's key. This enables your Ubuntu system to verify that the packages in the PPA have not been interfered with since they were built.

Now, as a one-off, you should tell your system to pull down the latest list of software from each archive it knows about, including the PPA you just added:

sudo apt-get update

Now you're ready to start installing software from the PPA!

2. Installing from the ppa

You will be installing the packages from the daily build of qt5 and the version date etc. could change but it is important to check that you have marked for install the package corresponding to the qt5 build as some of the packages may also be installed for qt 4.8.x A good check is to open the url for the Edgers and compare your selection to their file list at ...

[1]

The packages will be identified with similar to

  5.0-2012xxx ubuntu5 Zoltan Balogh (2012-04-05)

I have shown the example on the first entry in the list only.

Open Synaptic and use the quick find to look for and mark for install each of the packages in the following list ...

 qt-components-qtquick2     5.0-2012xxx ubuntu5 Zoltan Balogh (2012-04-05)
 qt3d
 qtbase
 qtdeclarative
 qtdoc
 qtjsbackend
 qtmultimedia
 qtquick1
 qtscript
 qtsvg
 qttools
 qtwebkit
 qtxmlpatterns

These packages will install by default in /opt/qt5

note: there are a couple of packages which you do not need to install.

3. Setting the path to qt5

From a terminal

$ export PATH=/opt/qt5/bin:$PATH

4. Compiling QtRadio

$ cd to the location of ghpsdr3-alex

$ sh cleanup
$ autoreconf -i
$ ./configure CXXFLAGS = '-O3 -fopenmp'
(for those of us with older machines use the line below instead)
$ ./configure CXXFLAGS='-O3 -msse2 -fopenmp'
$ make
$ sudo make install

5. Setting QtCreator to use the qt5 libraries

If you want to use Qt Creator (you use the same Qt Creator as with Qt4), you need to configure it to use Qt5 as one of the options:

Tools > Options > Build & Run
Click on the Qt Versions panel
Click on Add button
Navigate to /opt/qt5/bin
Click on qmake
Click on open
Click on Apply then OK

You need to point to the qmake file which is found in /opt/qt5/bin

6. Choosing the build library in QtCreator

you need to (re)import your QtRadio project and then you will be able to select Qt5 (or the previous Qt4.8 etc.) for building the application. (I have not got this to work yet so there is some more to go here when I get it sorted.)