Re: [boost] [Report] 2749 regressions on RC_1_34_0 (2007-01-24)

From: Roland Schwarz (roland.schwarz_at_[hidden])
Date: 2007-01-26 10:35:08

Nicola Musatti wrote:
> I have a working implementation, I'll post it tonight (GMT+1) from home, as I
> cannot post attachments from Gmane's web interface. The gist of it is the
> following function:

<snipped>

Based on your posting I tried to port the serialization.jam to bbv2.

It is almost working, however I need help with site-config.jam:

Here is what I have:

1) libs/serialization/build/Jamfile.v2:

On the top:
import serialization ;

project boost/serialization
     : source-location ../src
     : requirements 
<conditional>@serialization.require-boost-spirit-support
     ;

2) libs/serialization/build/serialization.jam:

rule require-boost-spirit-support ( properties * )
{
     local result ;
     local req-legacy = false ;

     if <toolset-msvc:version>6.5      in $(properties)
        { req-legacy = true ; }
     if <toolset-borland:version>8.5.2 in $(properties)
        { req-legacy = true ; }

     if $(req-legacy) = true {
             result += <use>/site-config//spirit-1.6 ;
     }

     return $(result) ;
}

3) In site-config.jam:

project site-config ;
alias spirit-1.6 : : : : <cxxflags>-I"H:/Projects/boost/SPIRIT_RC_1_6_2" ;

This seems to work fine. The problem is, that when the alias entry is 
missing from site-config the build aborts with an error, instead of just 
skipping the build of this particular library.

A work around would be to define only the path to the spirit-1.6 in 
site-config.jam, and return <build>no from require-boost-spirit-support 
when not available.

I was not able to find out how to do this.

Anyone knowing this?

Roland