Re: [cgkit-user] undefined symbol: jpeg_std_error

[Matthias B. <ba...@ir...>]

Tenzin Togden wrote:
> Thankyou, I did this, and eveything built faster than before, no
> errors but on testing and trying viewer.py I got the following :
> 
> tenzin@thinkpad:/>python all.py
> Importing test_arrayslots...
> Traceback (most recent call last):
>   File "all.py", line 16, in ?
>     exec "from %s import *"%modname
>   File "<string>", line 1, in ?
>   File "/home/tenzin/code/ray/cgkit/unittests/test_arrayslots.py", line 4, in ?
>     from cgkit import _core
> ImportError: /usr/lib/python2.3/site-packages/cgkit/_core.so:
> undefined symbol: _ZN5boost6python6detail13current_scopeE
> 
> [...]
> And from ldd I get :
> 
> tenzin@thinkpad:/>ldd /usr/lib/python2.3/site-packages/cgkit/_core.so
>         linux-gate.so.1 =>  (0xffffe000)
>         libjpeg.so.62 => /usr/lib/libjpeg.so.62 (0xb7913000)
>         libpng.so.3 => /usr/lib/libpng.so.3 (0xb78e5000)
>         libGL.so.1 => /usr/lib/libGL.so.1 (0xb786a000)
>         libGLU.so.1 => /usr/lib/libGLU.so.1 (0xb77ee000)
>         libxerces-c.so.25 => /usr/lib/libxerces-c.so.25 (0xb7467000)
>         libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0xb73aa000)
>         libm.so.6 => /lib/tls/libm.so.6 (0xb7358000)
>         libgcc_s.so.1 => /usr/local/lib/libgcc_s.so.1 (0xb7350000)
>         libpthread.so.0 => /lib/tls/libpthread.so.0 (0xb733e000)
>         libc.so.6 => /lib/tls/libc.so.6 (0xb7228000)
>         libz.so.1 => /usr/lib/libz.so.1 (0xb7216000)
>         libXxf86vm.so.1 => /usr/X11R6/lib/libXxf86vm.so.1 (0xb7211000)
>         libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0xb7203000)
>         libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0xb7107000)
>         libdl.so.2 => /lib/libdl.so.2 (0xb7103000)
>         /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000)

This time it's the Boost.Python library that's missing. ldd should 
display a line similar to this:

         libboost_python-gcc-1_33.so.1.33.0 => 
/client/lib/libboost_python-gcc-1_33.so.1.33.0 (0xb7928000)

  > #############################################
> # Boost.Python settings
> #############################################
> 
> # Name of the Boost.Python library to link with
> BOOST_LIB = "/usr/lib/libboost_python.so"

I'm not sure if 1) specifying an entire path will work and 2) specifying 
the *.so directly will work.
In my case, I was specifying the lib like this:

BOOST_LIB = "boost_python-gcc"

and adjusted INC_DIRS and LIB_DIRS accordingly.
If your versions of boost_python don't contain any version/compiler 
information, you should be able to get away with the default value of 
BOOST_LIB (which is "boost_python"). Just make sure the linker will find 
the library (i.e. add the path to LIB_DIRS if the lib isn't found already).

- Matthias -