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List:       boost-build
Subject:    [Boost-build] error: No best alternative for ./std_libs
From:       Avi Bahra <avibahra () googlemail ! com>
Date:       2010-04-26 10:11:06
Message-ID: t2waf1b101f1004260311j93dae54frf419033de72c0a69 () mail ! gmail ! com
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I am trying to implement conditional includes
of sources/lib's depending on the tool set i.e
Take the following jamfile snippet

....
# common libs
lib pthread  ;

# On HPUX we need to add standard libs.
lib std_v2 ;
lib stream ;
lib Csup ;
lib unwind ;
lib m ;

alias std_libs : pthread :  <toolset>gcc ;
alias std_libs : pthread :  <toolset>vacpp ;
alias std_libs : pthread std_v2 stream Csup unwind m :   <toolset>acc ;

python-extension ecf_ext : [ glob src/*.cpp ]
             /theCore//core
             /site-config//boost_system
             /site-config//boost_thread
             /site-config//boost_serialization
             /site-config//boost_filesystem
             /site-config//boost_program_options
             /site-config//boost_datetime
             std_libs
           : <variant>debug:<define>DEBUG
           ;

I am using alias std_libs to conditionally add additional libs on HPUX.

My site-config.jam on AIX look like:
......
project site-config
        : requirements <include>$(BOOST_ROOT)
        : requirements <threading>multi
        ;
using vacpp ;
using testing ;


Originally when I tested this on Linux, it worked a charm. However on
AIX and HPUX, I get messages like:

error: No best alternative for ./std_libs
    next alternative: required properties: <threading>multi <toolset>gcc
        not matched
    next alternative: required properties: <threading>multi <toolset>vacpp
        not matched
    next alternative: required properties: <threading>multi <toolset>acc
        not matched
...patience...

I don't understand why it cant make the correct choice, as it has all
the information, i.e for toolset and threading ?

Is there any better way of achieving conditional source/libs
dependent on toolset, apart from specifying on the command line ?

Any help on this matter appreciated.

  Best regards,
Ta,
   Avi

[Attachment #5 (text/html)]

I am trying to implement conditional includes<br>of sources/lib&#39;s depending on \
the tool set i.e<br>Take the following jamfile snippet<br><br>....<br># common \
libs<br>lib pthread  ;<br><br># On HPUX we need to add standard libs.  <br> lib \
std_v2 ;<br>lib stream ;<br>lib Csup ;<br>lib unwind ;<br>lib m ;<br><br>alias \
std_libs : pthread :  &lt;toolset&gt;gcc ;<br>alias std_libs : pthread :  \
&lt;toolset&gt;vacpp ;<br>alias std_libs : pthread std_v2 stream Csup unwind m :   \
&lt;toolset&gt;acc ;<br> <br>python-extension ecf_ext : [ glob src/*.cpp ]<br>        \
/theCore//core<br>             /site-config//boost_system<br>             \
/site-config//boost_thread<br>             /site-config//boost_serialization<br>      \
/site-config//boost_filesystem<br>  /site-config//boost_program_options<br>           \
/site-config//boost_datetime<br>             std_libs<br>           : \
&lt;variant&gt;debug:&lt;define&gt;DEBUG<br>           ;<br clear="all"><br>I am \
using alias std_libs to conditionally add additional libs on HPUX.<br> <br>My \
site-config.jam on AIX look like:<br>......<br>project site-config<br>        : \
requirements &lt;include&gt;$(BOOST_ROOT)<br>        : requirements \
&lt;threading&gt;multi<br>        ;<br>using vacpp ;<br>using testing ;<br> \
<br><br>Originally when I tested this on Linux, it worked a charm. However on<br>AIX \
and HPUX, I get messages like:<br><br>error: No best alternative for ./std_libs<br>   \
next alternative: required properties: &lt;threading&gt;multi &lt;toolset&gt;gcc<br>  \
not matched<br>    next alternative: required properties: &lt;threading&gt;multi \
&lt;toolset&gt;vacpp<br>        not matched<br>    next alternative: required \
properties: &lt;threading&gt;multi &lt;toolset&gt;acc<br>  not \
matched<br>...patience...<br><br>I don&#39;t understand why it cant make the correct \
choice, as it has all<br>the information, i.e for toolset and threading ? <br><br>Is \
there any better way of achieving conditional source/libs<br> dependent on toolset, \
apart from specifying on the command line ?<br><br>Any help on this matter \
appreciated.<br><br>   Best regards,<br>Ta,<br>    Avi<br><br>



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