Want to run Octave m-file

[Tottish]

That's great news norobro!

I can't really get it to work here though...
I run "ldconfig /usr/lib/octave-3.2.2" (after sudo) and only get a new prompt (the same response if I misspell) . nothing else happens and the same errors when compiling. Maybe there should be a -l or something in the command?


/Tottish

EDIT:
WoHoo!
Got it to work! I thought that the second thing you listed also had to be done for it to work. Thought it only applied after reboot, proves how new I am to this I guess! =)
Anyway, a HUGE thank you from me to you!!!

[norobro]

Hmm, I thought that would work.
No response is the expected behavior. It updates the cache. Try "ldconfig -p | grep octave:

ldconfig -p | grep octave
        liboctinterp.so (libc6) => /usr/lib/octave-3.2.4/liboctinterp.so
        liboctave.so (libc6) => /usr/lib/octave-3.2.4/liboctave.so
        libcruft.so (libc6) => /usr/lib/octave-3.2.4/libcruft.so

ldconfig -p | grep octave
        liboctinterp.so (libc6) => /usr/lib/octave-3.2.4/liboctinterp.so
        liboctave.so (libc6) => /usr/lib/octave-3.2.4/liboctave.so
        libcruft.so (libc6) => /usr/lib/octave-3.2.4/libcruft.so

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I had this problem trying to implement qwt. I don't understand why putting the libs with -L and -l in the Makefile doesn't work, but I tried a lot of different combinations to no avail. Maybe someone can enlighten me(us).

[Tottish]

WoHoo!
Got it to work! I thought that the second thing you listed also had to be done for it to work. Thought it only applied after reboot, proves how new I am to this I guess! =)
Anyway, a HUGE thank you from me to you!!
Still tricking around a little though but the major errors are GONE! I'll keep you posted.
/Tottish

EDIT: It works! Runs perfectly... Now row to implement my nonlinear optimization algorithm. =) Hmmm. I wonder if global variables work with this method... Probably not since they are most likely not contained within the library...

[iprogram]

WoHoo!
Got it to work! I thought that the second thing you listed also had to be done for it to work. Thought it only applied after reboot, proves how new I am to this I guess! =)
Anyway, a HUGE thank you from me to you!!
Still tricking around a little though but the major errors are GONE! I'll keep you posted.
/Tottish

EDIT: It works! Runs perfectly... Now row to implement my nonlinear optimization algorithm. =) Hmmm. I wonder if global variables work with this method... Probably not since they are most likely not contained within the library...

Hi,
I'm working with Windows and cannot adapt your advice from the Linux-world. Sorry!
I get lots of udefined reference errors, and don't know where to put some correct paths to libraries to solve the problem. Maybe you can help me?
Thanks!

Starting: C:/Qt/2010.02.1/mingw/bin/mingw32-make.exe -w
mingw32-make: Entering directory `C:/Qt/ExamplesFromOthers/Octave_integration'
C:/Qt/2010.02.1/mingw/bin/mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory `C:/Qt/ExamplesFromOthers/Octave_integration'
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_CORE_LIB -DQT_THREAD_SUPPORT -I"..\..\2010.02.1\qt\include\QtCore" -I"..\..\2010.02.1\qt\include" -I"..\..\..\Octave\3.2.4_gcc-4.4.0\include" -I"..\..\..\Octave\3.2.4_gcc-4.4.0\include\octave-3.2.4\octave" -I"..\..\2010.02.1\qt\include\ActiveQt" -I"debug" -I"..\..\2010.02.1\qt\mkspecs\win32-g++" -o debug\main.o main.cpp
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -Wl,-subsystem,console -mthreads -Wl -o debug\test2.exe debug/main.o -L"c:\Qt\2010.02.1\qt\lib" -LC:\Octave\3.2.4_gcc-4.4.0\lib -loctinterp -LC:\Octave\3.2.4_gcc-4.4.0\bin -loctinterp -lQtCored4
mingw32-make[1]: Leaving directory `C:/Qt/ExamplesFromOthers/Octave_integration'
mingw32-make: Leaving directory `C:/Qt/ExamplesFromOthers/Octave_integration'
debug/main.o: In function `main':
C:\Qt\ExamplesFromOthers\Octave_integration/main.cpp:28: undefined reference to `MatrixType::MatrixType()'
C:\Qt\ExamplesFromOthers\Octave_integration/main.cpp:28: undefined reference to `MatrixType::~MatrixType()'
C:\Qt\ExamplesFromOthers\Octave_integration/main.cpp:28: undefined reference to `MatrixType::~MatrixType()'
C:\Qt\ExamplesFromOthers\Octave_integration/main.cpp:34: undefined reference to `operator<<(std:stream&, Matrix const&)'
... etc ...

[Tottish]

Hi!
I'm no wiz at this but to me it doesn't seem like an Octave specific problem so I'm sure you can get more experienced help from others reading this if my tip is wrong/doesn't work.

You might need something like this in your .pro-file:

OCTAVE_LOCATION = C:\path\to\octave
INCLUDEPATH += $${OCTAVE_LOCATION}/path/to/sources  
LIBS = -L$${OCTAVE_LOCATION}/path/to/libs \
    -loctinterp  #(or whatever the name of the library(s?) you want to use.

OCTAVE_LOCATION = C:\path\to\octave
INCLUDEPATH += $${OCTAVE_LOCATION}/path/to/sources  
LIBS = -L$${OCTAVE_LOCATION}/path/to/libs \
    -loctinterp  #(or whatever the name of the library(s?) you want to use.

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Also, try to remember to wrap the code/compiler output you post in CODE tags for increased readability and to avoid smilies. (Use the pound sign from the toolbar).
Welcome to the Forum and Good luck! Just hang in there, google 'til your eyes bleed, read any official documentation and you'll crack it.
Peace Out!
/Tottish

[nicanor5]

Hello, sorry to revive this old thread, but is the only reference I have found about using Qt and Octave together.

I'm currently developing an application that uses Octave to do some signal processing to an audio signal (including loading and playing it) and Qt as the GUI.

I'm having trouble when running octave embedded in a Qt project as one of the Octave functions used in my process, hanning() is returning only zeros.

This doesn't happen if I embed without Qt.

If you can help me or guide me where I can get more help, thank you very much.

[nicanor5]

The problem I was having is related to the version 3.2 of Octave. Testing the program with the 3.6 version everything works fine so far.