yade-dev team mailing list archive

[Janek Kozicki <1735804@xxxxxxxxxxxxxxxxxx>]

This is Interesting.

By examining the output of git blame cc7568a73 gui/qt4/GLViewer.hpp and
git log cc7568a732 I see that Vaclav has commented out this line 8 years
ago when migrating from QT3 to QT4. I wonder why you need to uncomment
it back in QT5.

I tried doing this, and on my linux devuan ascii/ceres it did compile,
but then yade would not start, and produce this error:

Welcome to Yade 2018-05-23.git-90e061d 
Traceback (most recent call last):
  File "……/yade-trunk/bin/yade-2018-05-23.git-90e061d", line 129, in <module>
    import yade
  File "……/yade-trunk/lib/x86_64-linux-gnu/yade-2018-05-23.git-90e061d/py/yade/__init__.py", line 65, in <module>
    import boot
ImportError: ……/yade-trunk/lib/x86_64-linux-gnu/yade-2018-05-23.git-90e061d/py/yade/qt/_GLViewer.so: undefined symbol: _ZN8GLViewer8updateGLEv


So there is more to investigate here before we find a solution for this.

I don't know why it would work for you, to be honest, because
uncommenting this line is just creating a function declaration without a
function body. I mean: The error that I pasted above has a reasonable
explanation, it is because the uncommented line was:

virtual void updateGL(void);

and not:

virtual void updateGL(void) { /* function body */ };

So it did compile, but when starting yade, there was no function body to
execute. Thus I don't know why it worked for you :)



** Changed in: yade
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1735804

Title:
  QGLViewer updateGL() function error

Status in Yade:
  Incomplete

Bug description:
  Background Details:
  CentOS 7.4
  Compiled from source
  All features installed and enabled (except for python GTS...could not find that one)

  Issue:
  When attempting to build Yade, this error occurs:

  trunk-2017.01a/gui/qt5/GLViewer.cpp:298:11: error: ‘updateGL’ was not declared in this scope
    updateGL();

  The way I solved this was by uncommenting line 64 in:

  trunk-2017.01a/gui/qt5/GLViewer.hpp

  so that "virtual void updateGL(void);" would be visible. I am not sure
  if that was originally commented out for debugging or deprecation, but
  it inhibited the program from compiling. If the comments were
  intentional, how would I fix the error otherwise?

  Thanks,
     James

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