Re: multi platform build

From: dirk_griffioen (diddek_at_[hidden])
Date: 2005-07-11 07:57:58

--- In jamboost_at_[hidden], Jürgen Hunold <hunold_at_i...> wrote:
> HI Dirk !
> 
> 
> On Sunday, 10. July 2005 10:38, Dirk Griffioen wrote:
> > Hi All,
> >
> > How does bjam link libraries on platforms/compilers that do not
> > support "auto-link"? (For instance gcc)
> >
> > Do I need to specify the libraries in the jamfile?
> 
> Just add something like this to your Jamroot
> 
> project 
> : requirements
> # is dependent on
> <use>/boost        
> <library>/boost/signals
> ;
> 
> use-project /boost : $(BOOST_ROOT) ;
> 
> 
> > For instance:
> >
> > lib bu : : <name>libboost_unit_test_framework-gcc-mt-d-1_32 ;
> > lib bt : : <name>boost_thread-gcc-mt-d-1_32 ;
> >
> > unit-test queueqz : queueqz.cpp bu bt ;
> >
> > This works for gcc (compile, link and run), but it will fail when I
> > want to run a vc7 build.
> >
> > I think I have 2 options:
> >
> > 1)
> > Do something with an alias (don't know if this is legal):
> >
> > lib bu : :
> > <toolset>gcc:<name>libboost_unit_test_framework-gcc-mt-d-1_32
> > <toolset>vc71:<name>libboost_unit_test_framework-vc71-mt-d-1_32 ;
> >
> > then
> >
> > unit-test queueqz : queueqz.cpp bu bt ;
> >
> > will link depending on toolset. And maybe I can do this once in my
> > sit-config.jam. The downside is I have to go over my source tree and
> > add the lib-names everywhere.
> 
> Well, you really don't have to do this. Thats what BBv2 is about, to 
> keep this nightmare hidden ;-))
> 
> > 2)
> > If I look at boost regression, linking is done by referencing to a
> > boost project:
> >
> > alias date_time : ../build//boost_date_time ;
> >
> > This will work because now bjam knows where to look with a certain
> > toolset (gcc, vc71 etc), it can even build the lib 'on demand'.
> >
> > However, if I bring boost under my project-root and I did something
> > alike:
> >
> > unit-test queueqz : queueqz.cpp /boost//boost_unit ;
> >
> > then I still would have to edit all my unit-test lines - where the
> > beauty was that 'it just worked'. And I might be able to extend the
> > unit-test rule to do this, but, and here comes my real question, how
> > is this, "multi platform builds", done in the community?
> >
> > I feel it is plausible this problem has been addressed already. So
> > maybe somebody can tell me where to look?
> 
> Well, just add the needed Boost libraries to the "requirements" section 
> of your Jamroot and everything will work on all platforms.
> 
> You might have to add 
>   
> <define>BOOST_ALL_NO_LIB=1
> 
> to your Jamroot in order to disable auto-link...
> 
> Yours,
> 
> Jürgen
> 
Ok thanx!

We will try this for our other libs as well - put everything in
jamfiles and bjam decide. (sort of my option 2 then)

Cheers, Dirk

> 
> -- 
> * Dipl.-Math. Jürgen Hunold ! Institut für Verkehrswesen,
Eisenbahnbau
> * voice: ++49 511 762-2529 ! und -betrieb, Universität Hannover  
> * fax : ++49 511 762-3001 ! Appelstrasse 9a, D-30167 Hannover
> * hunold_at_i... ! www.ive.uni-hannover.de