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I installed octave 4 by compiling source as given in How to install Octave 4.0.0 in Ubuntu 14.04

but i am not able to use GUI. octave --force-gui gives me only commandline in terminal . please guide me to get GUI & other features .(if libraries are missing please tell me how to install libraries and get the featurs) hear is log file config.log ... BY seeing in log file i found this list :

  1. Build Octave GUI: no

  2. JIT compiler for loops: no

  3. Build Javainterface: yes

  4. Do internal array bounds checking: no

  5. Build static libraries: no

  6. Build shared libraries: yes

  7. Dynamic Linking: yes (dlopen)

  8. Include support for GNU readline: yes

  9. 64-bit array dims and indexing: no

  10. OpenMP SMP multithreading: yes

    1. Build cross tools: no

thank you

ramkiran
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  • Did you installed qtoctave . ? – A Umar Mukthar Jul 20 '15 at 03:29
  • But octave 4 has gui of its own. &I think qtoctave is dead . Qtoctave is working but I am trying for default GUI – ramkiran Jul 20 '15 at 04:11
  • Probably your system lacks one or more of the dependencies necessary to build the GUI, so that component was skipped. You will need to examine the config.log file to figure out what: if you need assistance, then [edit] your question to include the relevant section of the log file e.g. grep -B120 -A20 'Build Octave GUI' config.log – steeldriver Jul 20 '15 at 10:56
  • hello @steeldriver ,i edited the question as you suggested . could you help – ramkiran Jul 21 '15 at 17:05
  • I think I'm being stacked at almost the same step... I found by running $ ./configure configure: WARNING: OpenGL libs (GL and GLU) not found -- disabling GUI This might be a key of solution. – sano Jul 23 '15 at 06:14

3 Answers3

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Easy:

sudo apt-get install libqt4-opengl-dev
Bendermh
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Your config.log shows that your system lacks the Qt development components necessary for building the octave-4.0 GUI:

configure:72095: checking for QT
configure:72103: $PKG_CONFIG --exists --print-errors "$QT_MODULES"
Package QtOpenGL was not found in the pkg-config search path.
Perhaps you should add the directory containing `QtOpenGL.pc'
to the PKG_CONFIG_PATH environment variable
No package 'QtOpenGL' found
configure:72106: $? = 1
configure:72121: $PKG_CONFIG --exists --print-errors "$QT_MODULES"
Package QtOpenGL was not found in the pkg-config search path.
Perhaps you should add the directory containing `QtOpenGL.pc'
to the PKG_CONFIG_PATH environment variable
No package 'QtOpenGL' found
configure:72124: $? = 1
No package 'QtOpenGL' found
configure:72152: result: no
configure:73317: WARNING: Qt libraries not found -- disabling GUI

You will need to install at least the Qt toolkit dependencies noted in the INSTALL.OCTAVE file that ships with the octave-4.0.0 source:

Qt
     GUI and utility libraries ().  Qt is required for building the GUI.
     It is a large framework, but the only components required are the
     GUI, core, and network modules.

The specific Ubuntu packages are libqtgui4 libqtcore4 and libqt4-network however unless disk space is severely limited you may wish to install the comprehensive libqt4-dev package instead

sudo apt-get install libqt4-dev

Although it's targeted at Debian rather than Ubuntu, you may find this additional resource helpful Octave for Debian systems: Compiling from source - The right way.

steeldriver
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  • Unfortunately, that seems to not be enough to fix the problem. After installing many other packages, I've reduced the warnings to only the one about not finding OpenGL, but the steps you described didn't fix it. – Zelphir Kaltstahl Mar 02 '16 at 19:08
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I installed libqt4-dev, libqt4-opengl-dev and unixodbc-dev packages, then it worked.

Jens Erat
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o moral
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