[CMake] Executing python though CMake and linking libraries

[tonka3100 at gmail.com]

Hey,

I think your actual working directory is wrong. I would recommend to use absolute paths for the python interperter (there is a find_package module for the interpreter) and maybe also for your script. The custom command support a workingdirectory variable as far as i know.

Hope that help you.

Greetings
Tonka

> Am 25.11.2016 um 10:04 schrieb Kit Chambers <kit.chambers.kc at gmail.com>:
> 
> I have a Cmake custom target which runs a python script:
> 
> add_custom_target(run
>                 COMMAND python myscript.py
>                  ) 
> 
> And the script myscript.py imports a Compiled library 
> 
> import myproj.mylilb
> 
> where mylib is actually a C++ library generated with python bindings (using vtkPython). This intern links against some other C++ libraries I use etc.
> 
> 
> When I run the script normally from the command line everything works fine, but if I try to run the target I get linker errors.
> 
> $ make run
> 
> Traceback (most recent call last):
> File "myscript.py", line 8, in <module>
>   import myproj.mylilb
> ImportError: dlopen(/Users/kitchambers/Applications/ogFramework/lib/python2.7/site-packages/myproj/mylib.so, 2): Library not loaded: libSpProcSupport.so
> Referenced from: /Users/kitchambers/Applications/ogFramework/lib/python2.7/site-packages/myproj/mylib.so
> Reason: image not found
> 
> To me it looks like my LD_LIBRARY_PATH and DYLD_LIBRARY_PATH are not being passed through CMake to Python so it cannot find all the necessary sub libraries. However, i cannot work out how to pass this information through.
> 
> Any help would be greatly appreciated.
> 
> Cheers
> 
> Kit
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