Error : No module named ESL

Summary:

Problem with ESL module. Not able to build with make pymod

Error : No module named ESL

shrenik patel 11 May 2010 08:56

I have install freeswitch and wikipbx. But When I start web-server
#python manage.py runserver 0.0.0.0:8000

in browser I am getting this :

ViewDoesNotExist at /
Could not import wikipbx.wikipbxweb.views. Error was: No module named ESL

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

I am also not able to build ESL module
Build ESL with Python

I changed directory to libs/esl directory under freeswitch source tree & try to run following command.
$ make pymod

but I got error

make MYLIB="../libesl.a" SOLINK="-shared -Xlinker -x" CFLAGS="-I/usr/src/freeswitch/libs/esl/src/include -DHAVE_EDITLINE -g -ggdb -I../../libs/libedit/src/ -fPIC -O2 -ffast-math -Wall -Werror -Wunused-variable -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes" CXXFLAGS="-I/usr/src/freeswitch/libs/esl/src/include -DHAVE_EDITLINE -g -ggdb -I../../libs/libedit/src/ -fPIC -Wall -Werror -Wno-unused-variable" CXX_CFLAGS="" -C python
make[1]: Entering directory ‘/usr/src/freeswitch/libs/esl/python’
make[1]: Nothing to be done for ‘all’.
make[1]: Leaving directory ‘/usr/src/freeswitch/libs/esl/python’

Please help!! what should I do?
I will be very much obliged if you can help me.

Thank you
regards

Re: Error : No module named ESL

stas_shtin 11 May 2010 09:09

As described in WSGI configuration docs, you should have in your apache config something like:

WSGIPythonPath /usr/src/wikipbx:/usr/src/django:/usr/src/freeswitch/libs/esl/python

The last part of that path contains ESL python bindings directory. I suppose you've missed this step. The message from compiler is not an error - it just tells that you've compiled that library.

Re: Error : No module named ESL

shrenik patel 11 May 2010 09:37

Thank you for the reply.

But still same error

ViewDoesNotExist at /
Could not import wikipbx.wikipbxweb.views. Error was: No module named ESL

My django install in this /usr/local/lib/python2.6/dist-packages/ & freeswitch & wikipbx stored at /user/src

My file /etc/apache2/site-available/wikipbx
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
WSGIPythonPath /usr/src/wikipbx:/usr/local/lib/python2.6/dist-packages/django:/usr/src/freeswitch/libs/esl/python

<VirtualHost *:80>
ServerAdmin webmaster@localhost
WSGIScriptAlias / /usr/src/wikipbx/wikipbx.wsgi
ServerName localhost
ErrorLog /var/log/apache2/wikipbx.localhost.log
CustomLog /var/log/apache2/wikipbx.localhost.log common
</VirtualHost>
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Awaiting for your reply

Re: Error : No module named ESL

stas_shtin 11 May 2010 11:11

1. Is python2.6 the default version installed on your OS? What does this command return:

python --version

2. Make sure ESL library is built:

ls /usr/src/freeswitch/libs/esl/python/_ESL.so

Looks like that's the case, but an extra check won't hurt.

3. Run python with PYTHONPATH environment variable used for wikipbx:

PYTHONPATH=/usr/src/wikipbx:/usr/local/lib/python2.6/dist-packages/django:/usr/src/freeswitch/libs/esl/python python2.6

Execute this command:

import ESL

Do you get any errors?

Re: Error : No module named ESL

shrenik patel 11 May 2010 14:10

Thanks for the reply.

I followed the steps. I didn't get any error. My python version is 2.6.
I copied libs/esl/python/ESL.py & _ESL.so to /usr/local/lib/python2.6/dist-packages/ and error is solved.
have I done any mistake with that ? is it correct ?

Re: Error : No module named ESL

stas_shtin 11 May 2010 16:25

No, that's fine. The only problem you can have from this is if someday freeswitch will change event socket protocol to something incompatible with current version and you update freeswitch but don't copy ESL libs from the new version. But I think that it's a very unlikely situation.

Which version of mod_wsgi do you run? It looks like there's some change with its configuration directives, otherwise I don't understand why WSGIPythonPath didn't work.

Re: Error : No module named ESL

shrenik patel 11 May 2010 19:01

My mod_wsgi (libapache2-mod-wsgi) version is 2.3. I have install through synaptic package manager in ubuntu 9.04.

Last edited on 11 May 2010 19:07 by shrenik patel Show more

Re: Error : No module named ESL

tleyden 11 May 2010 22:44

I've seen cases where WSGIPythonPath seemed to be ignored and I had to manually add to sys.path in the .wsgi script. Unfortunately I didn't write down the exact mod_wsgi / python versions.

Re: Error : No module named ESL

stas_shtin 12 May 2010 09:33

According to mod_wsgi docs, starting from v2.0 it doesn't work it daemon mode. But there's parameter for daemon mode directive that lets you set python path instead.