visualpython-users

[Visualpython-users] boost bug

[Flavio C. <fcc...@gm...>]

Hi,

which version of boost do you recomend? I am running vpython 3.2.6 with
boost 1.33.0 and I am getting the following error when I instantiate a
gcurve plot:


/usr/lib/python2.4/site-packages/visual/graph.py in __init__(self, **args)
    487 class gcurve:
    488     def __init__(self, **args):
--> 489         pos =3D constructorargs(self,args)
    490         self.gcurve =3D curve(display=3Dself.gdisplay.display, colo=
r=3D
self.co
lor)
    491         if pos is not None:

/usr/lib/python2.4/site-packages/visual/graph.py in constructorargs(obj,
argumen
ts)
    461     else:
    462         if lastgdisplay is None:
--> 463             obj.gdisplay =3D getgdisplay()
    464         else:
    465             obj.gdisplay =3D lastgdisplay

/usr/lib/python2.4/site-packages/visual/graph.py in getgdisplay()
    454
    455 def getgdisplay():
--> 456     return gdisplay()
    457
    458 def constructorargs(obj,arguments):

/usr/lib/python2.4/site-packages/visual/graph.py in __init__(self, x, y,
width,     height, title, xtitle, ytitle, xmax, xmin, ymax, ymin,
foreground, background)
    190         self.setrangey()
    191
--> 192         currentdisplay.select()
    193
    194     def setxyparams(self):

RuntimeError: boost::bad_weak_ptr

thanks,
--
Fl=E1vio Code=E7o Coelho
registered Linux user # 386432
---------------------------
"Laws are like sausages. It's better not to see them being made."
Otto von Bismark

Re: [Visualpython-users] boost bug

[Bruce S. <Bru...@nc...>]

I tried using Boost 1.33.0 and ran into problems, though I don't=20
remember the details. I retreated to 1.31.0 and that worked. Not=20
encouraging.....

Bruce Sherwood

Flavio Coelho wrote:

>
> Hi,
>
> which version of boost do you recomend? I am running vpython 3.2.6=20
> with boost 1.33.0 and I am getting the following error when I=20
> instantiate a gcurve plot:
>
>
> /usr/lib/python2.4/site-packages/visual/graph.py in __init__(self,=20
> **args)
>     487 class gcurve:
>     488     def __init__(self, **args):
> --> 489         pos =3D constructorargs(self,args)
>     490         self.gcurve =3D curve(display=3Dself.gdisplay.display,=20
> color=3D self.co <http://self.co>
> lor)
>     491         if pos is not None:
>
> /usr/lib/python2.4/site-packages/visual/graph.py in=20
> constructorargs(obj, argumen
> ts)
>     461     else:
>     462         if lastgdisplay is None:
> --> 463             obj.gdisplay =3D getgdisplay()
>     464         else:
>     465             obj.gdisplay =3D lastgdisplay
>
> /usr/lib/python2.4/site-packages/visual/graph.py in getgdisplay()
>     454
>     455 def getgdisplay():
> --> 456     return gdisplay()
>     457
>     458 def constructorargs(obj,arguments):
>
> /usr/lib/python2.4/site-packages/visual/graph.py in __init__(self, x,=20
> y, width,     height, title, xtitle, ytitle, xmax, xmin, ymax, ymin,=20
> foreground, background)
>     190         self.setrangey()
>     191
> --> 192         currentdisplay.select()
>     193
>     194     def setxyparams(self):
>
> RuntimeError: boost::bad_weak_ptr
>
> thanks,
> --=20
> Fl=E1vio Code=E7o Coelho
> registered Linux user # 386432
> ---------------------------
> "Laws are like sausages. It's better not to see them being made."
> Otto von Bismark=20

Re: [Visualpython-users] boost bug

[Jonathan B. <jbr...@ea...>]

On Mon, 2006-01-30 at 10:40 -0200, Flavio Coelho wrote:
> 
> Hi,
> 
> which version of boost do you recomend? I am running vpython 3.2.6
> with boost 1.33.0 and I am getting the following error when I
> instantiate a gcurve plot:

Sorry it took so long for me to take a look at this.  I'm running the
latest VPython, with Boost 1.33.1, Python 2.4.2, and gcc 4.0.2 (Debian
4.0.2-8) with no problems.  I did see this error on my machine a long
time ago and I think it was due to either building two parts of the
system with different versions of G++ or different builds of Python.

Can you run
$ ldd /usr/local/lib/python2.4/site-packages/cvisualmodule.so | grep
"python\|libstdc"

The output should include only one libpython..., only one
libboost_python..., and only one libstdc++...

-Jonathan

Re: [Visualpython-users] boost bug

[Jonathan B. <jbr...@ea...>]

On Tue, 2006-02-14 at 12:20 -0200, Flavio Coelho wrote:
> Hi Jonathan,
> 
> I ran the ldd as you suggested and got nothing in return.
> 
> then I remove the grep and got this:
> 

>         libboost_python.so.1.33.0 => not found
>         libstdc++.so.5
> => /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.6/libstdc++.so.5
> (0xb79f4000) 

First off, be sure that you built Boost with GCC 3.3.6, and not
4.something.

Second - since cvisualmodule.so linked correctly, but the boost-python
library cannot be found by the runtime linker, find out where
Boost.Python was installed and also find out if that location is on the
library search path.  See ld.so(8) and ldconfig(8).  My hunch is that
Boost was installed under /usr/local and /usr/local/lib isn't
in /etc/ld.so.conf.

Finally, since libboost_python.so.1.33.0 cannot be found at all, if this
extension module was loaded by Python, you should get an ImportError or
somesuch when you try to "from visual import *".  Make sure you don't
have an older version of Visual installed somewhere.

-Jonathan

Fwd: [Visualpython-users] boost bug

[Flavio C. <fcc...@gm...>]

Solved. Just copying to the list in cased anyone runs into the same
problem...

---------- Forwarded message ----------
From: Flavio Coelho <fcc...@gm...>
Date: 16/02/2006 14:04
Subject: Re: [Visualpython-users] boost bug
To: Jonathan Brandmeyer <jbr...@ea...>

I actually had an old visual under python2.3/site-packages. I removed it an=
d
recompiled/reinstalled vpython. Curiously,

>
> # ldd /usr/local/lib/python2.4/site-packages/cvisualmodule.so
>         linux-gate.so.1 =3D>  (0xffffe000)
>         libgtk-1.2.so.0 =3D> /usr/lib/libgtk-1.2.so.0 (0xb7ce1000)
>         libgdk-1.2.so.0 =3D> /usr/lib/libgdk- 1.2.so.0 (0xb7ca9000)
>         libgmodule-1.2.so.0 =3D> /usr/lib/libgmodule-1.2.so.0 (0xb7ca6000=
)
>         libdl.so.2 =3D> /lib/libdl.so.2 (0xb7ca2000)
>         libXi.so.6 =3D> /usr/lib/libXi.so.6 (0xb7c9a000)
>         libXext.so.6 =3D> /usr/lib/libXext.so.6 (0xb7c8c000)
>         libX11.so.6 =3D> /usr/lib/libX11.so.6 (0xb7bc0000)
>         libgtkgl.so.5 =3D> /usr/lib/libgtkgl.so.5 (0xb7bbc000)
>         libGL.so.1 =3D> /usr/lib/opengl/nvidia/lib/libGL.so.1 (0xb7b4e000=
)
>         libgthread-1.2.so.0 =3D> /usr/lib/libgthread-1.2.so.0 (0xb7b4b000=
)
>         libpthread.so.0 =3D> /lib/libpthread.so.0 (0xb7af9000)
>         libglib-1.2.so.0 =3D> /usr/lib/libglib-1.2.so.0 (0xb7ad4000)
>         libboost_python.so.1.33.0 =3D> not found
>         libstdc++.so.5 =3D>
> /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.6/libstdc++.so.5 (0xb7a16000)
>         libm.so.6 =3D> /lib/libm.so.6 (0xb79f3000)
>         libc.so.6 =3D> /lib/libc.so.6 (0xb78dd000)
>         libgcc_s.so.1 =3D>
> /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.6/libgcc_s.so.1 (0xb78d5000)
>         /lib/ld-linux.so.2 (0x80000000)
>         libGLU.so.1 =3D> /usr/lib/libGLU.so.1 (0xb7858000)
>         libGLcore.so.1 =3D> /usr/lib/opengl/nvidia/lib/libGLcore.so.1
> (0xb7167000)
>         libnvidia-tls.so.1 =3D> /usr/lib/opengl/nvidia/lib/libnvidia-
> tls.so.1 (0xb7165000)


it still tries fo find the old libboost which is no longer there.

# locate libboost_python
/usr/lib/libboost_python.a
/usr/lib/libboost_python.so
/usr/lib/libboost_python.so.1.33.1


First off, be sure that you built Boost with GCC 3.3.6, and not
> 4.something.


I Used 3.3.6

Second - since cvisualmodule.so linked correctly, but the boost-python
> library cannot be found by the runtime linker, find out where
> Boost.Python was installed and also find out if that location is on the
> library search path.  See ld.so(8) and ldconfig(8).  My hunch is that
> Boost was installed under /usr/local and /usr/local/lib isn't
> in /etc/ld.so.conf.


No, see above.


Finally, since libboost_python.so.1.33.0 cannot be found at all, if this
> extension module was loaded by Python, you should get an ImportError or
> somesuch when you try to "from visual import *".  Make sure you don't
> have an older version of Visual installed somewhere.



interestingly enough, after all these maneuvers made my original problem go
away...

thanks

Fl=E1vio





--
Fl=E1vio Code=E7o Coelho
registered Linux user # 386432
---------------------------
"Laws are like sausages. It's better not to see them being made."
Otto von Bismark


--
Fl=E1vio Code=E7o Coelho
registered Linux user # 386432
---------------------------
"Laws are like sausages. It's better not to see them being made."
Otto von Bismark