Re: [Swig-devel] swig unusable with octave-3.2.x

[Xavier D. <xav...@gm...>]

On Thu, Jul 2, 2009 at 11:31 AM, William S
Fulton<ws...@fu...> wrote:
> Igor wrote:
>>
>> Hello,
>>
>> Can't get octave example compiled with recently released octave-3.2.0.
>> Here is the output:
>>
>> -----------------------------------------------------------------------------------------------------
>> user@garik:/usr/doc/swig-1.3.38/Examples/octave/simple$ swig -octave -c++
>> -o ~/example.cpp example.i
>> user@garik:/usr/doc/swig-1.3.38/Examples/octave/simple$ cd
>> user@garik:~$ g++ -shared -I/usr/include/octave-3.2.0 -o example.oct
>> example.cpp
>> example.cpp: In member function 'void octave_swig_type::install_global()':
>> example.cpp:1197: error: 'curr_sym_tab' was not declared in this scope
>> example.cpp:1197: error: 'link_to_global_variable' was not declared in
>> this scope
>> example.cpp:1204: error: 'symbol_record' was not declared in this scope
>> example.cpp:1204: error: 'sr' was not declared in this scope
>> example.cpp:1204: error: 'global_sym_tab' was not declared in this scope
>> example.cpp: In function 'void SWIG_Octave_SetModule(void*,
>> swig_module_info*)':
>> example.cpp:2110: error: 'curr_sym_tab' was not declared in this scope
>> example.cpp:2110: error: 'link_to_global_variable' was not declared in
>> this scope
>> example.cpp: In function 'octave_value_list Fexample(const
>> octave_value_list&, int)':
>> example.cpp:2600: error: 'curr_sym_tab' was not declared in this scope
>> example.cpp:2600: error: 'link_to_global_variable' was not declared in
>> this scope
>>
>> -----------------------------------------------------------------------------------------------------
>>
>> I'm using swig-1.3.38, octave-3.2.0, gcc-4.3.3.
>>
> Igor, I havn't seen a response to this yet. Xavier might have missed it...
> he is the Octave maintainer. Probably some changes are needed to support
> this newer version or you are compiling this all wrong. Here is a working
> version using octave-3.0.1 and swig-1.3.39:

Sorry, yes I haven't found the time to look into this yet. From the
errors in the original message it seems like some relatively minor
changes are needed in the way it binds global variables and other
initialization bits. Octave 3.2 adds support for matlab OOP which
required substantial changes to symbol table internals. I'll try to
have a look at this this weekend.

Very likely this will require some configure magic or a switch to
toggle between octave <3.2 and >=3.2. Suggestions on what method is
preferred would be welcome.

Xavier

>
> william@caracal:~/swig/swig-1.3.39/Examples/octave/simple$ make
> make -f ../../Makefile SRCS='example.c' SWIG='../../../preinst-swig' \
>        TARGET='example' INTERFACE='example.i' octave
> make[1]: Entering directory
> `/home/william/swig/swig-1.3.39/Examples/octave/simple'
> ../../../preinst-swig -octave  example.i
> g++ -g -c -fpic  example_wrap.cxx   -I /usr/include
> gcc -g -c -fpic  example.c   /usr/include
> gcc: /usr/include: linker input file unused because linking not done
> gcc -shared  example.o  example_wrap.o   -o example.oct
> make[1]: Leaving directory
> `/home/william/swig/swig-1.3.39/Examples/octave/simple'
> william@caracal:~/swig/swig-1.3.39/Examples/octave/simple$
>
> There is a stray /usr/include in the compilation of example.c, but that can
> be ignored and is fixed in svn.
>
> William
>