Re: [Boost-users] conditional define

Subject: Re: [Boost-users] conditional define
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2012-03-16 11:57:47

AMDG

On 03/16/2012 06:58 AM, Marc-Antoine ARNAUD wrote:
> I'm using boost BJam to build my project with externals librairies.
> And I need to define variables if I found headers on the machine.
> 
> How can we do that ?
> 
> project
>     : requirements
>     <include>.
>     <define>FLAG_NEEDED_TO_DEFINE     => I need to define only if I found
> header.
>     ;
> 
> 
> lib library : [ glob *.cpp ] ;
> 

At the moment the easiest way to do this is:

// header.cpp
#include <header.h>

# Jamfile

import configure ;

obj header_test : header.cpp ;

project
  : requirements
    [ configure.check-target-builds header_test
      "header.h exists" : <define>FLAG_NEEDED_TO_DEFINE ] ;

In Christ,
Steven Watanabe