[libstdc++ PATH] tr1::bind support

[Chris Jefferson]

Douglas Gregor wrote:
> 
> On Mar 21, 2005, at 6:55 PM, Chris Jefferson wrote:
> 
>> Can I just query how long other people are finding programs take to 
>> compile with tr1::bind?
> 
> 
> Longer than I'd hoped :(
> 
>> I might have applied the patch incorrectly, as I have a different 
>> version of <tuple> locally, but I'm finding simple files from the 
>> testsuite (such as tr1/6_containers/tuple/tuple_size.cc), and in fact 
>> anything that contains either <functional> or <tuple> is taking over 
>> 30 seconds to compile! (1.4Ghz machine, 512MB ram).
> 
> 
> I'm getting about 20 seconds per compile, on a slightly faster machine, 
> but still an issue. I believe that the problem might actually be in 
> preprocessing, because, e.g. bind_iterate.h gets included about 400 
> times :) It's possible that we'll want to preprocess the sources (say, 
> at configure time) to see if that helps.
> 

I tried preprosessing, which produced a 3.9M file.. it still takes >20 
seconds to compile. However, once I pursaded pre-compiled headers to 
work, while the resulting files was 52M(!!) now it compiles in < 1 sec, 
so when/if everyone is using precompiled headers, the problem will be 
allieviated somewhat. I still think it might be nice to pull the 
functional header apart a bit...

Chris