Experimental Physics and
Industrial Control System

Zenon Szalata <[email protected]> · Wed, 3 Apr 2013 10:55:38 -0700

Hi Lucas,
I am guessing that you are using epicsQt version 2.0 or higher.

It seems to me that you did not export the QWT_INCLUDE_PATH to point to

where your qwt package is installed.

Also, at the bottom of framework.pro file you may want to modify the

line which specifies the qwt library. I have modified it to:

LIBS += -L$$(QWTDIR)/lib -lqwt,

where I use an environment variable QWTDIR to point to the qwt top

directory. Of course, you have built the qwt package.

Specifically, I have installed qwt in /opt/qt/qwt, hence in my case
QWT_INCLUDE_PATH=/opt/qt/qwt/src
and
QWTDIR=/opt/qt/qwt.

I hope that helps.
Zen

On 04/03/13 10:13, Lucas Jose Monteiro Carvalho wrote:

Hello, all

I'm trying to build the EPICSQt, using Ubuntu, but I have this problem, when I make directly on QT Creator:

-------
/usr/bin/ld: cannot find -lqwt
collect2: ld returned 1 exit status
-------

My epicsqt.pro file:

-------

    TEMPLATE = subdirs
    CONFIG   += ordered
    CONFIG   += qwt

message( Applications may need to load the framework library directly. To ensure this can happen one option is to set up LD_LIBRARY_PATH to include the directory <your-epicsqt-project-location>/framework/designer. LD_LIBRARY_PATH is currently $(LD_LIBRARY_PATH) )

message( Applications may need to load the framework library as a Qt plugin. To ensure this can happen one option is to set up QT_PLUGIN_PATH to include the directory <your-epicsqt-project-location>/framework. LD_LIBRARY_PATH is currently $(QT_PLUGIN_PATH) )

SUBDIRS = \
     framework \
     applications/QEGuiApp \
     applications/QEMonitorApp

-------

I have also other problem, resolved partly:

The EPICSQt does not find some libraries, like qwt_plot.h and qwt_plot_curve.h, that are in the folder "/usr/include/qwt-qt4/", and to resolve, I add the complete path in code.

Example:

#include <qwt_plot.h>

Only works when I replace to:

#include </usr/include/qwt-qt4/qwt_plot.h>

I exported some enviroment variables:

QWT_INCLUDE_PATH = /usr/include/qwt-qt4/
EPICS_HOST_ARCH = linux-x86_64
EPICS_BASE = /home/ABTLUS/lucas.monteiro/Documentos/EPICS/base

Thanks in advance,
Lucas José Monteiro Carvalho
Control Group
Brazilian Synchrotron Light Laboratory
[email protected]
+55 19 8217-6011

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System