[C++-sig] Help with problem caused going from boost_1_33_1 to 1_35_0

[Tony Kirke]

Thanks Ralf,
I tried reversing the order to no avail. I'm attached a gzipped tar file of
the example, if anyone would like to try it. I'd be grateful to confirm if
there is an issue or not. Only things that may need to be edited would be
path to boost_1_35_0 and python 2.4/2.5
Tony

2008/6/9 Ralf W. Grosse-Kunstleve <rwgk at yahoo.com>:

> I stared at your code for a few minutes but I don't have an answer
> for you. It looks like it should work. I'm not aware of changes in
> Boost.Python that could make your code fail.
> I'd probably try to reverse the import order:
>
> from spucb.iir_coeff import *
> from spucb.butterworth_iir import *
>
> although I don't expect this to make a difference.
>
> Ralf
>
>
> ----- Original Message ----
> From: Tony Kirke <pyspuc at gmail.com>
> To: c++-sig at python.org <c%2B%2B-sig at python.org>
> Sent: Monday, June 9, 2008 8:25:20 AM
> Subject: [C++-sig] Help with problem caused going from boost_1_33_1 to
> 1_35_0
>
> Hi,
> My c++ code that worked fine for Boost_1_33_1 (building with v1 system) is
> now giving the following error with 1_35_0:
>
> Boost.Python.ArgumentError: Python argument types in
>     spucb.butterworth_iir.butterworth_iir(iir_coeff, float)
> did not match C++ signature:
>     butterworth_iir(iir_coeff {lvalue}, float)
>
> I done a lot of searching to find out what changed in the newer Boost/boost
> build system and could not figure out what to do.
> Below is all of the code for a simple testcase. Since I have lots of code
> that is broken in this way,  I'm wondering if there is an easy change that
> can be made to the boost wrapping code (or source itself) to make this
> functional.  Is there a simple example of how this problem is solved. Was
> there a fundamental reason this is no longer supported?
> Thanks
>
> Tony
>
> ------------------------------------------
> class iir_coeff
> {
> public:
>   long order;
>
> public:
>   iir_coeff(long ord=1);
>   ~iir_coeff();
> };
> ------------------------------------------
> #include "iir_coeff.h"
> iir_coeff::iir_coeff(long ord) {
>   order = ord;
> }
> iir_coeff::~iir_coeff() {}
> ------------------------------------------
> // Boost Includes
> ==============================================================
> #include <boost/python.hpp>
> #include <boost/cstdint.hpp>
>
> // Includes
> ====================================================================
> #include "iir_coeff.h"
>
> // Using
> =======================================================================
> using namespace boost::python;
>
> // Module
> ======================================================================
> BOOST_PYTHON_MODULE(iir_coeff)
> {
>   class_< iir_coeff >("iir_coeff", init< const iir_coeff& >())
>         .def(init< optional< long int > >())
>     .def_readwrite("order", &iir_coeff::order)
>     ;
>
> }
> ------------------------------------------
> #include "iir_coeff.h"
> void butterworth_iir(iir_coeff& filt, float fcd);
> ------------------------------------------
> #include "butterworth_iir.h"
> void butterworth_iir(iir_coeff& filt, float fcd) {
>   long order = filt.order;
>   filt.order = order+1;
> }
> ------------------------------------------
> // Boost Includes
> ==============================================================
> #include <boost/python.hpp>
> #include <boost/cstdint.hpp>
>
> // Includes
> ====================================================================
> #include "butterworth_iir.h"
>
> // Using
> =======================================================================
> using namespace boost::python;
>
> // Module
> ======================================================================
> BOOST_PYTHON_MODULE(butterworth_iir)
> {
>   def("butterworth_iir", &butterworth_iir);
> }
>
> ------------------------------------------
> use-project boost   : ../../boost_1_35_0 ;
>
> project
>   : requirements <library>/boost/python//boost_python/<link>static
>   : usage-requirements  <include>../../boost_1_35_0 <include>.
>     ;
>
> lib spuc :
> butterworth_iir.cpp
> iir_coeff.cpp
> :
>  <include>.
>  <include>../../boost_1_35_0
>
> ;
>
> alias staticspuc : spuc/<link>static ;
>
> import python ;
>
>
> python-extension butterworth_iir :   py_butterworth_iir.cpp : <include>.
> <include>../../boost_1_35_0 :  <library>staticspuc ;
> python-extension iir_coeff :   py_iir_coeff.cpp :  <include>.
> <include>../../boost_1_35_0 :  <library>staticspuc ;
>
> install dist :
> __init__.py
> butterworth_iir
> iir_coeff
> :
>         <location>/usr/lib/python2.4/site-packages/spucb
> ;
>
> ------------------------------------------
> boost-build ../../boost_1_35_0/tools/build/v2 ;
> ------------------------------------------
>
> from spucb.butterworth_iir import *
> from spucb.iir_coeff import *
> x=iir_coeff(8)
> butterworth_iir(x,0.24)
> print x.order
>
> ------------------------------------------
> Traceback (most recent call last):
>   File "tes.py", line 4, in ?
>     butterworth_iir(x,0.24)
> Boost.Python.ArgumentError: Python argument types in
>     spucb.butterworth_iir.butterworth_iir(iir_coeff, float)
> did not match C++ signature:
>     butterworth_iir(iir_coeff {lvalue}, float)
>
>
>
>
>
>
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