Qwt Installation for GUI

Before installing Qwt, one must install Qt and ensure that QTDIR, LD_LIBRARY_PATH and PATH point to the correct Qt4 version.

A Qwt version equal or higher than 6 is required. One can install it:

• via YUM:

   yum install qwt-devel
  

• via download from:
  https://sourceforge.net/projects/qwt/files/qwt/6.0.0/qwt-6.0.0.zip/download

  To install:

  > cd qwt-6.0.0
  > qmake
  > make
  > make install
  

  By default Qwt will be installed int /usr/local/qwt-6.0.0

Setup Environment

One has to ensure that QWTDIR and LD_LIBRARY_PATH have been updated to include Qwt install path and libraries.

If the environment is not set up, one can add the libraries to the .bashrc by adding LD_LIBRARY_PATH:

export QWTDIR=/usr/local/qwt-6.0.0/
export LD_LIBRARY_PATH=$QWTDIR/lib:$LD_LIBRARY_PATH