Qwt-6.0.0-rc1

[msr]

Hello,

I installed qwt library and all the examples are built without problems.
However when I create a project I can't use Qwt.

I tried:
export QMAKEFEATURES = /usr/local/qwt-6.0.0/features
qmake -set QMAKEFEATURES /usr/local/qwt-6.0.0/features

The qwt.prf file is in the specified directory.

But when Im building the project I still get the error:

/home/mribeiro/Qt_Projects/QwtTest/qwttest: error while loading shared libraries: libqwt.so.6: cannot open shared object file: No such file or directory
/home/mribeiro/Qt_Projects/QwtTest/qwttest exited with code 127

The contens of .pro file are:

TARGET = qwttest
 
SOURCES += main.cpp \
    mainwindow.cpp \
    plot.cpp \
    curvedata.cpp \
    signaldata.cpp
HEADERS += mainwindow.h \
    plot.h \
    curvedata.h \
    signaldata.h
 
CONFIG += qwt

TARGET = qwttest

SOURCES += main.cpp \
    mainwindow.cpp \
    plot.cpp \
    curvedata.cpp \
    signaldata.cpp
HEADERS += mainwindow.h \
    plot.h \
    curvedata.h \
    signaldata.h

CONFIG += qwt

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What am I doing wrong?

[Im using Ubuntu 10.04]

[Uwe]

But when Im building the project I still get the error: ...

No you already have built your application successfully - these are error messages of the loader !

See LD_LIBRARY_PATH, ldd, ldconfig and friends.

Uwe

[msr]

Thanks for your response.

I tried the following:

export LD_LIBRARY_PATH=/usr/local/qwt-6.0.0/lib/
Edit file /etc/ld.so.conf and include "/usr/local/qwt-6.0.0/lib/"
Run ldconfig
Run ldconfig -n "/usr/local/qwt-6.0.0/lib"

None of them worked.

Any suggestions?

Im also reading http://tldp.org/HOWTO/Program-Librar...libraries.html and I think Im doing the right thing but it still doesn't work...

mribeiro@mribeiro-linux:/usr/local/lib/qwt-6.0.0/lib$ ls
libqwtmathml.so    libqwtmathml.so.6.0    libqwt.so    libqwt.so.6.0
libqwtmathml.so.6  libqwtmathml.so.6.0.0  libqwt.so.6  libqwt.so.6.0.0

mribeiro@mribeiro-linux:/usr/local/lib/qwt-6.0.0/lib$ ls
libqwtmathml.so    libqwtmathml.so.6.0    libqwt.so    libqwt.so.6.0
libqwtmathml.so.6  libqwtmathml.so.6.0.0  libqwt.so.6  libqwt.so.6.0.0

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Edit1:
Well, I copy-pasted libqwt.so.6 to /usr/lib and now it works. However I wonder how can I configure loader to search libraries in other directories. Any help is greatly appreciated!

Edit2: Done! For further reference: create a file "*.conf" (f.e., qwt.conf) in "/etc/ld.so.conf.d/" and add path "/usr/local/qwt-6.0.0/lib"