Re: [Boost-build] -ftemplate-depth

From: Ilya Sokolov (fal_delivery_at_[hidden])
Date: 2008-07-20 07:28:20

Jurko Gospodnetić wrote:
>   Hi Ilya.
> 
>>>   Heh... low hanging fruit. :-) Seems like a real easy thing to add
>>
>> Your patch and a new ticket (194) makes me think it is not so easy
> 
>   Heh... yup, when I wrote that I hadn't thought about the 'allowed 
> values' problem, but it really did not turn out to be difficult to add. 
> It just has this 'one little quirk' :-))) that will be removed as soon 
> as we upgrade Boost Build too allow something like specifying a rule for 
> validating a feature's value.

That would be great for interface completeness.

>>> and it does make sense to allow the user to configure this.
>>
>> User can use <cxxflags>
> 
>   Yup, that is the workaround used at the moment (I saw it used in 
> several Boost library test Jamfiles). And all this started by Joel 
> asking whether there was a way to not have two -ftemplate-depth-X 
> parameters on the command line when you override the 'default' 
> template-depth value for a project.
> 
>   User can still use <cxxflags>... this is just an attempt to prepare a 
> cleaner interface for configuring the template-depth option.

I think <cxxflags> is clear enough. There are many compiler/linker/* 
options that could be made into bb features, and every such a feature 
should be tested and documented.