[GRASS-dev] Working with TGIS without starting GRASS explicitly

[Laurent C.]

Hi Sören,

Setting LD_LIBRARY_PATH is working, thanks. But it cannot be set at
run-time, which is not very user-friendly.
I guess this issue is related to the ticket 2424 [1].

I managed to get it work at run-time by restarting the program with
sys.execv() after setting the path [2], but I find it a bit ugly and
quite verbose to be multi-platform.

It would be great if an easier option was possible.

Regards,
Laurent

[1] https://trac.osgeo.org/grass/ticket/2424
[2] http://stackoverflow.com/questions/6543847/setting-ld-library-path-from-inside-python


2016-09-21 15:40 GMT-05:00 Sören Gebbert <soerengebbert at googlemail.com>:
> Hi,
> i think you have to put the GRASS libraries into your LD_LIBRARY_PATH so
> that the python wrapper can access them.
>
> Best regards
> Soeren
>
> 2016-09-21 20:37 GMT+02:00 Laurent C. <lrntct at gmail.com>:
>>
>> Hello all,
>>
>> I'm trying to adapt a python module in order for it to be run outside of
>> GRASS.
>> I followed the instructions from the wiki and lib/python/script/setup.py
>>
>> gsetup.init() run without error and I can list maps like in the example.
>>
>> However, when I try to import the temporal module, I receive this error:
>>
>> import grass.temporal as tgis
>>   File "/usr/lib/grass70/etc/python/grass/temporal/__init__.py", line
>> 1, in <module>
>>     from core import *
>>   File "/usr/lib/grass70/etc/python/grass/temporal/core.py", line 38,
>> in <module>
>>     from c_libraries_interface import *
>>   File
>> "/usr/lib/grass70/etc/python/grass/temporal/c_libraries_interface.py",
>> line 19, in <module>
>>     import grass.lib.gis as libgis
>>   File "/usr/lib/grass70/etc/python/grass/lib/gis.py", line 23, in
>> <module>
>>     _libs["grass_gis.7.0.4"] = load_library("grass_gis.7.0.4")
>>   File "/usr/lib/grass70/etc/python/grass/lib/ctypes_loader.py", line
>> 55, in load_library
>>     return self.load(path)
>>   File "/usr/lib/grass70/etc/python/grass/lib/ctypes_loader.py", line
>> 71, in load
>>     raise ImportError,e
>> ImportError: libgrass_datetime.7.0.4.so: cannot open shared object
>> file: No such file or directory
>>
>>
>> Did I forgot to set-up something or this is a bug?
>>
>> Cheers,
>> Laurent
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>
>