Best way to install Qt5 on Ubuntu 23.10

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_Geant4 Version:_4.11.2
_Operating System:_Ubuntu 23.10
_Compiler/Version:_g++ 13.2.0
_CMake Version:_3.27

What’s the best way to install Qt for G4.11.2 ?

I try to install Qt5 on a Ubuntu23.10 OS compiling Qt5.15.2 source with a « make » and « make install » to have Qt5 in /usr/local

I download the qt-everywhere-src-5.15.2.tar.gz file from the Qt
(Index of /archive/qt/5.15/5.15.2/single page

after unzipping this file, i did a shadow building, that i create a qt-everywhere-src-5.15.2-build directory out of the src file.
i run inside the build directory, the configure file

cd ~/qt-everywhere-src-5.15.2-build
~/ qt-everywhere-src-5.15.2/configure

I should modify the ~/qt-everywhere-src-5.15.2/qtbase/src/corelib/global/qglobal.h file to avoid a first error (error : ‘numeric_limits’ is not a class template…)

Such an error is documented on the web. One should add the three first lines to the qglobal.h header file

#ifdef __cplusplus

Afterthat configure is successfull and generate makefiles in the ~/qt-everywhere-src-5.15.2-build repertory

I ran then « make » but have the following error


I try on a second PC the same process. I note that on this other PC the output lines were different since it request that llvm-config file is in the PATH


So i add in my « .basrhc file » ‘export PATH=${PATH}:/usr/lib/llvm-13/bin’
I ran again « make » but got the following error


I also try downloading the Qt online installer via Qt Account Downloads and follow the instructions in the installer. I select the following components using the following wizard.


I got the following in /usr/local


So dear experts what is the best way to install Qt5 for G4 ?

Gosh, you show commendable persistence!! Have you tried homebrew? ( Works a treat on my Mac. They say Linux too - The Missing Package Manager for macOS (or Linux).

For Qt5 it would be
$ brew install qt@5

Why not just install the system packages for qt5?

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