Re: [Boost-build] order of include directories in python extension

Subject: Re: [Boost-build] order of include directories in python extension
From: Gevorg Voskanyan (v_gevorg_at_[hidden])
Date: 2011-02-22 17:19:38

John Reid wrote:
> Sorry I spoke too soon. It is not  working. Compiling is fine. At runtime 
> I get:
> 
> ImportError: 
> /home/john/Dev/MyProjects/PyICL/bin/gcc-4.4.3/debug/_pyicl_dynamic.so: 
> undefined symbol: _Py_RefTotal
> 
> I imagine this is something to do with  getting the boost.python usage 
> requirements wrong. Does anyone have a better  solution to this problem 
> than hard-coding all the usage  requirements?

I have created an example which should put you on the track. Please see below, 
and don't hesitate to come back if you have questions.

lib a : a.cpp : : : <include>foo <define>bar <link>static:<define>static_macro 
<include>duplicate ;

import targets : generate-from-reference ;
import property-set ;
import project ;

rule collect_usage_reqs ( target_ref : properties * )
{
local result = [ generate-from-reference $(target_ref) : [ project.current ] : [ 
property-set.create $(properties) ] ] ;
local ps = $(result[1]) ;
return [ $(ps).raw ] ;
}

lib b : : <conditional>@a_usage_reqs ;
lib c : : <link>static <conditional>@a_usage_reqs ;

rule a_usage_reqs ( properties * )
{
local result = [ collect_usage_reqs a : $(properties) ] ;
ECHO $(result) ;
return $(result) ;
}

lib no_duplicate : : <conditional>@no_dup_a_usage_reqs ;

import set ;

rule no_dup_a_usage_reqs ( properties * )
{
local reqs = [ a_usage_reqs $(properties) ] ;
local result = [ set.difference $(reqs) : <include>duplicate ] ;
ECHO "After filtering:" ;
ECHO $(result) ;
ECHO ;
return $(result) ;
}