Re: [Boost-build] [PATCH] -ftemplate-depth

From: Markus Schöpflin (markus.schoepflin_at_[hidden])
Date: 2008-07-30 08:16:21

Ilya Sokolov wrote:
> Markus Schöpflin wrote:
>> Ilya Sokolov wrote:
>>
>> [...]
>>
>>> Why not use <cxxflags> instead of <c++-template-depth> as the value 
>>> is toolset-dependent anyway?
>>
>> Are you questioning the wisdom of the existence of the 
>> <c++-template-depth> feature itself?
>>
>> A real big advantage is that its existence allows to write
>>
>>  foo.cxx : : : <c++-template-depth>bar ;
> 
> No, template-depth is an internal constant of the compiler, so most 
> probably its value will be different on each of them, i.e.

[...]

I don't follow you here.

What I (as a Jamfile author) want to express is that for this file to 
compile the minimum needed template recursion depth is <bar>.

This should translate to whatever flags are needed for the specific 
toolset, it the compiler in question has support for specifying the 
recursion depth.

If I don't care about the template recursion depth, I don't specify 
anything, boost.build doesn't provide a default as well, and the compiler 
will pick whichever internal default it has.

Markus