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Qt-based implementation of the ROOT package

Project Members:

• Valeri Fine (admin)

[Valeri Fine]

Complement the existent ROOT installation with QtRoot plugin(x11 and MacOS only)

On X11 an MacOS platforms one can complement any existent "--disable-qt" ROOT installation with the QtRoot package.

First time installation

First make sure you provide the correct ROOT and Qt environment. This means

The env variables ROOTSYS and QTDIR are defined.
$ROOTSYS/lib and $QTDIR/lib directory are present on your LD_LIBRARY_PATH
$ROOTSYS/bin and $QTDIR/bin directory are present on your PATH

Create some directory you want QtRoot to be installed in. For example "QtRoot".

mkdir -p QtRoot/qtrootsys
cd QtRoot
setenv QTROOTSYSDIR `pwd`/qtrootsys # Use the dedicated directory 
                                     # to keep ROOT and QtRoot separately

 # setenv QTROOTSYSDIR $ROOTSYS      # This will merge ROOT and QtRoot 
                                     # libraries and header files

 svn co svn://svn.code.sf.net/p/qtroot/code/trunk qtRoot
 cd qtRoot
 qmake  # use "qmake -spec macx-g++" for MacOS 
 make
 make install

If you opt for the dedicated directory for Qt Root then do not forget to include the new package into your environment

   setenv LD_LIBRARY_PATH $QTROOTSYSDIR/lib:$LD_LIBRARY_PATH

For MacOS one needs:

   export DYLD_LIBRARY_PATH=${QTROOTSYSDIR}/lib:$DYLD_LIBRARY_PATH

and customize either .roootrc or $ROOTSYS/etc/system.rootrc file to turn the Qt-layer "on"

Upgrade the existent installation

To upgrade the "complement" installation with the latest QtRoot version one has to

#!/bin/bash
cd QtRoot
setenv QTROOTSYSDIR `pwd`/qtrootsys # Use the dedicated directory 
                                     # to keep ROOT and QtRoot separately

# setenv QTROOTSYSDIR $ROOTSYS      # This will merge ROOT and QtRoot 
                                     # libraries and header files
svn checkout svn://svn.code.sf.net/p/qtroot/code/trunk  qtRoot
cd qtRoot
qmake # use "qmake -spec macx-g++" for MacOS 
make
make install

Test

To test your installation
Set the package environment. To do that you need to find and select one of the 3 shell scripts created by the "Full Installation"

source set_environment.csh
source set_environment.sh  # this script is Ok for Cygwin environment as well)
source set_environment.tcsh

If you skipped the "Full Installation" you may want to set the environment "by hand" too. For example, set_environment.sh does

#!/bin/bash
export QTDIR=my/Qt-4.5.2
export QMAKESPEC=
export QT_CONF_OPTS= -fast -opensource -opengl
export ROOTSYS=cernroot
export QTROOTSYSDIR=cernroot
export LD_LIBRARY_PATH=$ROOTSYS/lib:$QTDIR/lib:$LD_LIBRARY_PATH
export PATH=$ROOTSYS/bin:$QTDIR/bin:$PATH

For MacOS one needs

export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:$LD_LIBRARY_PATH

as well.
Select the qtExamples directory and build the test suite:

      cd qtExamples
      qmake
      make (or "nmake" for the Visual Studio environment)

[quantatanu]

Hi Valeri,

I replaced [b]step-1 and 2[/b]:
[code]
export QTROOTSYSDIR=pwd/qtrootsys
export QTROOTSYSDIR=$ROOTSYS

then I proceed to the step, qmake WHICH produces the following output:

me@me/QtRoot/qtRoot$ qmake
Project MESSAGE: excluding
Project MESSAGE:  Installing <qt qtgui qtgl qtthread qtimage qtroot qt4ged> of QtRoot system
Project MESSAGE:  To remove some packages from the build, start the qmake utility as follows:
Project MESSAGE:  
Project MESSAGE:  > qmake QTPACKAGES -= <list of unwanted packages>
Project MESSAGE:  
Project MESSAGE: type <make install> - to install qt qtgui qtgl qtthread qtimage qtroot qt4ged of QtRoot into </home/me/root> directory
Project MESSAGE: 

and then I ran make that failed badly ! The output is huge so I am attaching a txt file, but I am posting below the last few lines that states the exact error:

src/TQtContextMenuImp.cxx:17:22: fatal error: QWebView: No such file or directory
compilation terminated.
Makefile:1437: recipe for target '.obj/TQtContextMenuImp.o' failed
make[1]: *** [.obj/TQtContextMenuImp.o] Error 1
make[1]: Leaving directory '/home/me/QtRoot/qtRoot/qtgui'
Makefile:81: recipe for target 'sub-qtgui-make_default-ordered' failed
make: *** [sub-qtgui-make_default-ordered] Error 2

How can I make this work ?

Additional info:
1. I already had a Qt 5.7.1 (not root QT) installed on my Ubuntu 16.04 (64 bit) system.
2. My ROOT version is 5.34/36.

Thanks a lot