Re: [Boost-build] When can we retire V1

From: Markus Schöpflin (markus.schoepflin_at_[hidden])
Date: 2006-01-13 07:00:01

Vladimir Prus wrote:

> On Friday 13 January 2006 13:19, Markus Schöpflin wrote:
> 
>> Some things which come to my mind:
>>
>> 1. Quite a number of test jam files contain workarounds for specific
>> compilers or platforms. Most look something like this (just as an example):
>>
>> local rule special-requirements ( toolset variant : properties * )
>> {
>>      if $(UNIX) && $(OS) = OSF
>>      {
>>          switch $(toolset)
>>          {
>>              case gcc* : properties += <cflags>-mfp-rounding-mode=d ;
>>              case tru64cxx* : properties += <cflags>-fprm <cflags>d ;
>>          }
>>      }
>>
>>      return $(properties) ;
>> }
>>
>> local rule local-run ( sources + : args * : input-files * : requirements *
>>
>>      : name ? : default-build * : args2 * )
>>
>> {
>>      return [ run $(sources) : $(args) : $(input-files)
>>
>>          : $(requirements) special-requirements
>>          : $(name) : $(default-build) : $(args2) ] ;
>>
>> }
>>
>> How does the corresponding V2 code look like?
> 
> In the simplest form:
> 
>     return [ run .....
>          : $(requirements) <os>OSF,<toolset>gcc>:<cflags>-mfp-rounding=mode=d 
>          ....
> 
> That's provided that <os>OSF is property set on that OS, and if not that can 
> be fixed.

Can this do pattern matching as well? Because this is why local rules are 
used in the first place. The actual tool set name will be something like 
gcc-4.0.2-osf, or tru64cxx65-042, or something similar.

>> 2. I use customized tool sets for all of my regression runs. For V1, one
>> such file looks like this:
>>
>> {
>>      extends-toolset tru64cxx65 ;
>>
>>      flags tru64cxx65 CFLAGS : -version V6.5-042 -ieee ;
>>      flags tru64cxx65 LINKFLAGS : -version V6.5-042 -ieee ;
>> }
>>
>> How will these customized tool sets work under V2?
> 
> Something like:
>  
>    using tru64cxx65 : : <cflags>"-version V6.5-042 -ieee" ;

Sounds easy.

[snip]

Markus