Can execute examples

[gyre]

Hi Ive compiled and installed qwt...I have compiled all examples...
But when I want to run any of the examples I got this error statement:

error while loading shared libraries: libqwt.so.5: cannot open shared object file: No such file or directory

Does anyone know what is the problem ?
THanks

[jpn]

Try searching the forums or Google for "LD_LIBRARY_PATH" or "ld.so.conf".

[gyre]

heh believe me I have googled before I made this thread...
I have set all the paths configured all these things around but still wasnt able to make it work...so...

[jacek]

How did you set LD_LIBRARY_PATH?

[gyre]

my mistake...I made a typo in my config file ...
sorry and thanks....
shit

[UsenetCoder]

How did you set LD_LIBRARY_PATH?

How set LD_LIBRARY_PATH on Debian / Ubuntu Linux?

I was added this line to my .bashrc file :

export LD_LIBRARY_PATH="/usr/local/qwt-5.2.0/lib/libqwt.so.5"


I can compile exemple project from QWT, but when i try run it I have this error:

Starting /home/rafal/qwt-5.2.0/examples/bin/radio...
/home/rafal/qwt-5.2.0/examples/bin/radio: error while loading shared libraries: libqwt.so.5: cannot open shared object file: No such file or directory

/home/rafal/qwt-5.2.0/examples/bin/radio exited with code 127

[squidge]

LD_LIBRARY_PATH is exactly that, a list of paths. It shouldn't include filenames.

A better approach would be to edit /etc/ld.so.conf and then running ldconfig

[UsenetCoder]

LD_LIBRARY_PATH is exactly that, a list of paths. It shouldn't include filenames.

A better approach would be to edit /etc/ld.so.conf and then running ldconfig

i try this solution:

http://www.qtcentre.org/forum/f-qwt-...ux--23683.html

my qwtconfig.pri file:


#target.path = $$INSTALLBASE/lib
target.path =/opt/qtsdk-2009.04/bin/designer

headers.path = $$INSTALLBASE/include
#doc.path = $$INSTALLBASE/doc
doc.path =/usr/local/qwt-5.2.0/doc


but I can't still run samlpe software : /

[squidge]

You could always just copy the library files to /lib directory. It's not the best way, but it'll work and be the least complicated, as the /lib path is automatically included.

[UsenetCoder]

OK. I use ldconfig and now, i can run sample apps

But i have one question, how add QWT widget to QTCreator?
I want drag and drop qwt widgets to apps form, but now I can't see any aidgets from qwt on qtcreator component list :/

[squidge]

No idea, but if you keep to the rule of one topic per topic then you'll get more response.

[Uwe]

export LD_LIBRARY_PATH="/usr/local/qwt-5.2.0/lib/libqwt.so.5"

export LD_LIBRARY_PATH="/usr/local/qwt-5.2.0/lib"

You have to set the path to your library - not the library itsself.

Uwe

[alexisorthone]

I am new to QWT. So I read about everything in the net. But I still cannot force examples work. I've done export LD_LIBRARY_PATH="/usr/local/qwt-5.2.0/lib", but there is still error while loading shared libraries: libqwt.so.5: cannot open shared object file: No such file or directory. Goodness, I don't know what I have to do. I've done ldconfig. Nothing. I don't know what should I write in /etc/ld.so.conf. Help me please!