|I am not allowed to post on Linux site, so I am posting here.
I have never done this so I am confused with these instructions.
I like to install the Qwt library "under" my Qt folder.
I am using QtCreator so my qmake is current and working, so I skipped verifying qmake.
qwt-6.2.0 folder did not exist on my system so I did
then I get lost what to do next...
this folder obviously does not exists in /Qt folder
The first step before creating the Makefile is to check that the correct version of qmake is used. F.e. on older Linux distribution you often find a Qt3 qmake and in the path.
The default setting of qmake is to generate a makefile that builds Qwt for the same environment where the version of qmake has been built for. So creating a makefile usually means something like:
The generated Makefile includes all paths related to the chosen Qt version and the next step is:
( On multicore systems you can speed up building the Qwt libraries with running several jobs simultaneously: f.e. "make -j4" on a dual core. )
Finally you have to install everything below the directories you have specified in qwtconfig.pri. Usually this is one of the system directories ( /usr/local, /opt, ... ) where you don't have write permission and then the installation needs to be done as root:
sudo make install
( On systems where sudo is not supported you can do the same with: su -c "make install" )