• Cesar (21/21) Sep 26 2019 Hi,
• Cesar (14/35) Sep 26 2019 I found what was wrong. The pyd subConfiguration of python37 was

Cesar <cesar.rdz.v gmail.com> writes:

Hi,

I am trying to get started using pyd with 
https://github.com/Superbelko/pyd-min as an example and I am 
getting an error from the linker:

     minpyd ~master: building configuration "application"...
     Linking...
     /usr/bin/ld: cannot find -lpython3.7m
     collect2: error: ld returned 1 exit status
     Error: linker exited with status 1
     dmd failed with exit code 1.


I did not modify anything from that sample code. This is a 
proof-of-concept and then I would move to a larger D project and 
Python library which uses a specific conda environment.

If I take out the pyd subConfiguration from dub.json, the build 
succeeds but then it picks up my system-wide python 2.7.

Does anyone know how I can indicate the linker where to look for 
python3.7m? How can I configure pyd to use python from my conda 
environment? As a small note, I am quite new to D, so I may have 
missed something obvious.

Best regards
Cesar

Cesar <cesar.rdz.v gmail.com> writes:

On Thursday, 26 September 2019 at 13:29:09 UTC, Cesar wrote:
 Hi,

 I am trying to get started using pyd with 
 https://github.com/Superbelko/pyd-min as an example and I am 
 getting an error from the linker:

     minpyd ~master: building configuration "application"...
     Linking...
     /usr/bin/ld: cannot find -lpython3.7m
     collect2: error: ld returned 1 exit status
     Error: linker exited with status 1
     dmd failed with exit code 1.


 I did not modify anything from that sample code. This is a 
 proof-of-concept and then I would move to a larger D project 
 and Python library which uses a specific conda environment.

 If I take out the pyd subConfiguration from dub.json, the build 
 succeeds but then it picks up my system-wide python 2.7.

 Does anyone know how I can indicate the linker where to look 
 for python3.7m? How can I configure pyd to use python from my 
 conda environment? As a small note, I am quite new to D, so I 
 may have missed something obvious.

 Best regards
 Cesar

I found what was wrong. The pyd subConfiguration of python37 was 
looking for my system-wide python37, which I did not have. To use 
the conda python, I ran the script from 
https://github.com/ariovistus/pyd/blob/master/setup/pyd_set_env_vars.sh:

     pyd_set_env_vars.sh <my_conda_python>

And used subConfiguration "pyd": "env". When I did that, I got a 
runtime error about the libraries not being found, so then I 
added the flag LD_LIBRARY_PATH when running the executable:

     LD_LIBRARY_PATH=~/miniconda3/envs/MYENV/lib ./executable

I still need to figure out how to move this flag into dub.son but 
for now it is working. Hope this helps out in case someone has 
the same problem.

Cesar