Re: [boost] impl(ementations) - keeping it simple

From: John Torjo (john.lists_at_[hidden])
Date: 2004-01-26 02:55:23

Hartmut Kaiser wrote:

> John Torjo wrote:
> 
> 
>>Again, I'm pretty frustrated that some libraries have source 
>>files that 
>>need to be compiled separately (using bjam).
>>
>>I was thinking that we could have a directory '/boost/impl', and each 
>>library that has sourse files could have an .hpp file that 
>>includes all 
>>of its source files (that would normally need to be compiled 
>>separately).
>>
>>This way, any user, even not having bjam, can include the 
>>implementation 
>>of a library, as simple as:
>>// this is included in ONLY one source file
>>#include <boost/impl/filesystem.hpp>
>>
>>As a regular user, I'd rather have the above, than having to 
>>use bjam to 
>>build a library.
>>
>>If people agree, I volunteer to create the /boost/impl 
>>directory for all 
>>the libraries that now need to be compiled separately, 
>>somewhere this week.
> 
> 
> That's not always reasonable. 
> 
>>From the point of view of the Wave library (I file a review request
> shortly), certainly you _can_ include all of the library at once, but this
> would raise compilation times up to hours! That's why Wave contains several
> source files, which only purpose is to separate certain template
> instantiation into it's own translation unit. For the average user
> compilation time drops drastically this way. 
> 

I must have mis-explained something.
The user should include the implementation ONLY IN ONE TRANSLATION UNIT.
It's like compiling the source files separately.

Best,
John