sudo eopkg it -c system.devel
sudo eopkg install libx11-devel libxtst-devel libxmu-devel
https://sourceforge.net/projects/imwheel/
tar -xf imwheel-1.0.0pre12.tar.gz
cd imwheel-1.0.0pre12
./configure
make
These should complete without any errors. If so, install imwheel with:
sudo make install
imwheel -b 45
Note that you may need to start a new terminal session for the imwheel command to be recognized.