Fix python and ruby binding build failures

[richmattes]

Copied from bugs 368 and 373 in SF.

368:

I am not sure if it's a problem with python filter that generates swig input file and the header; or the problem is in the new swig.

The generated C file calls "member functions" as _playerc_client_t_read when in the header file only the standard playerc_client_read is defined.

My stupid idea is to do a patch which add #define _playerc_client_t_read playerc_client_read.

The proper fix would be to write/instruct swig to use the correct "global" functions.

/build/buildd/player-3.0.2+dfsg/obj-x86_64-linux-gnu/client_libs/libplayerc/bindings/python/playercPYTHON_wrap.c: In function '_wrap_playerc_client_destroy':
/build/buildd/player-3.0.2+dfsg/obj-x86_64-linux-gnu/client_libs/libplayerc/bindings/python/playercPYTHON_wrap.c:50457:3: warning: implicit declaration of function '_playerc_client_t_destroy' [-Wimplicit-function-declaration]
/build/buildd/player-3.0.2+dfsg/obj-x86_64-linux-gnu/client_libs/libplayerc/bindings/python/playercPYTHON_wrap.c: In function '_wrap_playerc_client_set_transport':
/build/buildd/player-3.0.2+dfsg/obj-x86_64-linux-gnu/client_libs/libplayerc/bindings/python/playercPYTHON_wrap.c:50487:3: warning: implicit declaration of function '_playerc_client_t_set_transport' [-Wimplicit-function-declaration]
/build/buildd/player-3.0.2+dfsg/obj-x86_64-linux-gnu/client_libs/libplayerc/bindings/python/playercPYTHON_wrap.c: In function '_wrap_playerc_client_connect':
/build/buildd/player-3.0.2+dfsg/obj-x86_64-linux-gnu/client_libs/libplayerc/bindings/python/playercPYTHON_wrap.c:50509:3: warning: implicit declaration of function '_playerc_client_t_connect' [-Wimplicit-function-declaration]

the rest of the build log is at:
https://launchpadlibrarian.net/108812838/buildlog_ubuntu-quantal-amd64.player_3.0.2%2Bdfsg-4ubuntu1_FAILEDTOBUILD.txt.gz

373:

(Copied from rtv/Stage#42)

Full build log:
https://launchpad.net/ubuntu/+source/player/3.0.2+dfsg-4.1ubuntu1/+build/5180617

Get:349 http://ftpmaster.internal/ubuntu/ trusty/main swig2.0 amd64 2.0.10-0ubuntu2 [1153 kB]
Get:350 http://ftpmaster.internal/ubuntu/ trusty/main swig amd64 2.0.10-0ubuntu2 [6670 B]

Function `new__playerc_client_t' implicitly converted to pointer at /build/buildd/player-3.0.2+dfsg/obj-x86_64-linux-gnu/client_libs/libplayerc/bindings/python/playercPYTHON_wrap.c:50489

Function `new__playerc_client_t' implicitly converted to pointer at /build/buildd/player-3.0.2+dfsg/obj-x86_64-linux-gnu/client_libs/libplayerc/bindings/ruby/playercRUBY_wrap.c:49044

Indeed generated bindings refer to that non-existing function.

[rashadkm]

How about using a pre-generated wrapping sources for python and ruby? . With each release they can be updated and swig will no longer be a dependency for player. Good thing is, I dont want to worry about swig version changes anymore. generating wrapping sources can be done for every release. and if I want to generate it own my own, If I have proper swig which is documented on the readme or something

[gerkey]

We had an OS X / brew user run across what appears to be the same problem: osrf/homebrew-simulation#76. The workaround there is to not have swig installed, which is fine, but not great.

[richmattes]

There have been a couple of changes to the swig generation since 3.0.2 was released. Is anyone able to re-create these issues with the latest git head?

I'm getting symbol errors when trying to import playerc from player 3.0.2:

$ python
Python 2.7.11 (default, Feb  5 2016, 01:53:41) 
[GCC 6.0.0 20160201 (Red Hat 6.0.0-0.9)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from playerc import *
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "playerc.py", line 28, in <module>
    _playerc = swig_import_helper()
  File "playerc.py", line 24, in swig_import_helper
    _mod = imp.load_module('_playerc', fp, pathname, description)
ImportError: ./_playerc.so: undefined symbol: _playerc_device_t_get_boolprop

But I'm not seeing any errors when using the latest git master branch:

$ python
Python 2.7.11 (default, Feb  5 2016, 01:53:41) 
[GCC 6.0.0 20160201 (Red Hat 6.0.0-0.9)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from playerc import *
>>> c = playerc_client(None, "localhost", 6665)
>>> c.connect()
playerc warning   : warning : [Player v.3.1.0-svn] connected on [localhost:6665] with sock 3

0
>>> 

[mfe7]

I can confirm that with 3.0.2 the symbol error occurs, but this repo's version works.