Unhardcode qwt paths

[philip-bl]

Right now qwt paths for network_viewer_qt_v2 are hardcoded like this:

    # src/network_viewer_qt_v2/Network_viewer_qt_v2.pro
INCLUDEPATH += /usr/include/qwt-qt4
DEPENDPATH += /usr/include/qwt-qt4
LIBS += -L/usr/lib \
        -lqwt-qt4 \
        -lnetcdf \
        -lGLU

This does not work on my system. (archlinux, with package qwt5 used for this)
However if I change qwt-qt4 to qwt5, then it works.

Anyway, hardcoding /usr/include is not cool - what if I have qwt build somewhere in my home library?

[asalnikov]

Philip, what file contains this record? Probably it is a part of automatically generated Makefile.

[philip-bl]

Judging from what I've written, it's src/network_viewer_qt_v2/Network_viewer_qt_v2.pro