./configure (and then there's this) Unable to find the 'qmake' tool for Qt 4.
 

Configuring qbittorrent ...


Verifying Qt 4 build environment ... fail


Reason: Unable to find the 'qmake' tool for Qt 4.

Be sure you have a proper Qt 4.0 build environment set up. This means not
just Qt, but also a C++ compiler, a make tool, and any other packages
necessary for compiling C++ programs.

If you are certain everything is installed, then it could be that Qt 4 is not
being recognized or that a different version of Qt is being detected by
mistake (for example, this could happen if $QTDIR is pointing to a Qt 3
installation). At least one of the following conditions must be satisfied:

1) --qtdir is set to the location of Qt
2) $QTDIR is set to the location of Qt
3) QtCore is in the pkg-config database
4) qmake is in the $PATH

This script will use the first one it finds to be true, checked in the above
order. #3 and #4 are the recommended options. #1 and #2 are mainly for
overriding the system configuration.

And have you checked the items mentioned in that message?

It would also help to know what GNU/Linux distro and version you are building on, so those familiar with it can help you get the environment setup that you need.

`qbittorrent-3.0.11´ → →
"./configure" will check for any naming of qmake, see configure line 246 :
names="qmake-qt4 qmake4 qmake"

? Looks like you will have to install the package `qt-devel' ?

install the dev/devel part of qt4

however if you are on a OLD operating system like RHEL5.9

then qt4 will not be installed but qt3 is ( rhewl5 kde3 is qt3 )