[Boost-users] bjam issues

1 Aug 2006

      Hello!

Regrettably my posting "Labeling patched Boost versions" from 2006-07-21
got no response :-(( - so I would like to manipulate the boost bjam
on my own to reach the effect that the build libraries will have a fixed
character sequence suffix (aka "build id") but I got lost, when I tried 
this.
My assumption was that I only need to modify Jamfile.v2 in the root 
directory where I found the promising rules beginning with line 92:

# This rule is called by Boost.Build to determine the name of
# target. We use it to encode build variant, compiler name and
# boost version in the target name
rule tag ( name : type ? : property-set )
{
     if $(type) in STATIC_LIB SHARED_LIB IMPORT_LIB
     {
         if $(layout) = versioned
         {
             name = [ stage.add-variant-and-compiler $(name)
               : $(type) : $(property-set) ] ;

             local version-tag = [ MATCH "^([^.]+)[.]([^.]+)" : 
$(BOOST_VERSION[1]) ] ;
             version-tag = $(version-tag:J="_") ;

             # On NT, library with version suffix won't be recognized
             # by linkers. On CYGWIN, we get strage duplicate symbol
             # errors when library is generated with version suffix.
             # On OSX, version suffix is not needed -- the linker expets
             # libFoo.1.2.3.dylib format.
             # AIX linkers don't accept version suffixes either.
             if [ $(property-set).get <os> ] in NT CYGWIN MACOSX AIX
             {
                 return $(name:B)-$(version-tag)$(name:S) ;
             }
             else
             {
                 return 
$(name:B)-$(version-tag)$(name:S).$(BOOST_VERSION)  ;
             }
         }
         else
         {
             return [ stage.add-variant-and-compiler $(name)
               : $(type) : $(property-set) ] ;
         }
     }
}

Naively I just tried to add a fixed string to the returned name, e.g.

# This rule is called by Boost.Build to determine the name of
# target. We use it to encode build variant, compiler name and
# boost version in the target name
rule tag ( name : type ? : property-set )
{
     if $(type) in STATIC_LIB SHARED_LIB IMPORT_LIB
     {
         if $(layout) = versioned
         {
             name = [ stage.add-variant-and-compiler $(name)
               : $(type) : $(property-set) ] ;

             local version-tag = [ MATCH "^([^.]+)[.]([^.]+)" : 
$(BOOST_VERSION[1]) ] ;
             version-tag = $(version-tag:J="_") ;

             # On NT, library with version suffix won't be recognized
             # by linkers. On CYGWIN, we get strage duplicate symbol
             # errors when library is generated with version suffix.
             # On OSX, version suffix is not needed -- the linker expets
             # libFoo.1.2.3.dylib format.
             # AIX linkers don't accept version suffixes either.
             if [ $(property-set).get <os> ] in NT CYGWIN MACOSX AIX
             {
                 return $(name:B)-$(version-tag)$(name:S)."A" ;
             }
             else
             {
                 return 
$(name:B)-$(version-tag)$(name:S).$(BOOST_VERSION)."B"  ;
             }
         }
         else
         {
             return [ stage.add-variant-and-compiler $(name)
               : $(type) : $(property-set)."C" ] ;
         }
     }
}

but that did not influence the resulting names of a new bjam build at 
all. Could someone please help a dump bjam beginner to reach the wanted 
effect, e.g. to attach a given fixed string constant like "M20060801"
to all created libraries??

Thank you very much for your patience,

Daniel Krügler