Re: [gobo-eiffel-develop] Gec, Boehm and xace

[Eric B. <er...@go...>]

Colin Adams wrote:
> On 22/01/2008, Eric Bezault <er...@go...> wrote:
>> Eric Bezault wrote:
> 
>>>> Apart from the two typos, the sentence seems to suggest that <option
>>>> name="garbage_collector" value="boehm"/> should now work.
>>>>
>>>> But there is no confirmation of this in the section on gec itself.
> 
>> It's now implemented in svn#6276.
> 
> Thanks.
> 
> What happens if this option is supplied, but BOEHM_GC is not set? Is
> an error message issued, or does compilation go ahead assuming the
> value is actually set to "none"?

Even if the environment variable BOEHM_GC is not set, gec will
generate code that works with the Boehm GC. Indeed, it is possible
that one wants to generate the C code, and then compile it later
on another computer where the Boehm GC is installed. Furthermore,
the environment variable BOEHM_GC is something that is used in
the config files in $GOBO/tool/gec/config/c, but it is just a
convention and it is possible to write config files that don't
use this environment variable.

> If the former, then is it possible to test to see if an environment
> variable is set within a system.xace file?

   <option name="garbage_collector" value="boehm" if="${BOEHM_GC}"/>

-- 
Eric Bezault
mailto:er...@go...
http://www.gobosoft.com