[Boost-build] conditional properties

From: Matthew Herrmann (matthew.herrmann_at_[hidden])
Date: 2006-05-01 01:26:53

Hi All,

I am seeing a problem where conditional properties defined on variants are not 
being activated when building against an inherited variant.

In the code below, I expect both DEBUG_FLAG and DEBUG_FLAG_2 to be defined 
when compiling my_app. However, only DEBUG_FLAG is set.

=============================================

project myapp ;

# define a variant suitable for testing position counts
variant debug_child
        : debug : <define>DEBUG_FLAG ;

exe my_app
    : # sources
    [ glob *.cpp ]

    : # requirements (debug/release, platform)
    <variant>debug:<define>DEBUG_FLAG_2

    : 
    : 
    ;

$ bjam -d+2 debug_child
gcc.compile.c++ bin/gcc/debug_child/test.o

    "ccache" "gcc"   -Wall -ftemplate-depth-100 -O0 -fno-inline -g -fPIC  
-DDEBUG_FLAG   -c -o "bin/gcc/debug_child/test.o"  "test.cpp"

=============================================

Is there a workaround or a fix for this behaviour?

Thanks in advance,

-- 
Matthew Herrmann
matthew.herrmann_at_[hidden]
Vice President, Software Architecture
Zomojo Pty Ltd