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This requires qt 3 or later. See http://www.trolltech.com
To support the widgets needed for this code you need Qwt:
http://n4hy.org/Qwt/qwt.spec
http://n4hy.org/Qwt/qwt.pc
http://n4hy.org/Qwt/qwt-5.0.0.tar.bz2
http://n4hy.org/Qwt/qwt-5.0.0-1.src.rpm
QTDIR is an environment variable that must be set for
gr-qtgui to make.
On Ubuntu with a standard apt-get or synaptic install,
this is done by:
export QTDIR=/usr/share/qt3
on Fedora Core 6 for example it is automatically set to
/usr/lib/qt-3.3
by Qt install
Qwt probably needs to be built and installed for now using
rpmbuild --rebuild qwt-5.0.0-1.src.rpm
which must be run as root (as in sudo) so that files are
installed in the proper place for the gnuradio build
(such as qwt.pc).
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