I just got this working, so am posting to the list in case this helps someone
else in the future. Essentially you invoke the python script through CMakes -E
command and specify your library paths so it picks up all your shared
libraries. Something like:
add_custom_target(run
COMMAND cmake "-E" "env" “LD_LIBRARY_PATH=/your/library/path
DYLD_LIBRARY_PATH=/library/path/for/mac/" “python” “./myscript.py”
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
However, I will be the first to admit this is not a particularly elegant
solution so I would be interested to here if anyone out there has a better way
of getting invoked commands to pick up the environment paths correctly.
Kit
> On 25 Nov 2016, at 13:23, tonka3...@gmail.com wrote:
>
> 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...@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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