CGAL users discussion list

[Philipp Möller <>]

Hi Zohar,
compilation times with template code are a serious problem and the usual argument goes like this: Get a new computer or dedicated build-infrastructure.
Your idea looks cool but comes with some serious problems. 

- C++ build systems are already overly complex, hiding a (notoriously complex) C++ parser isn't a good idea (although Boost.Wave comes to mind). You also need to scan for much more than just functions (static, unnamed namespace). 
- parsing and building your intermediate files looks error prone and time consuming
- you put a lot of strain on the linker, dunno if this is actually better than putting it on the compiler

Generally this is something more suited for comp.lang.c++.moderated and not for SO or this mailing list. But I'm afraid people there are just going to tell you that you should help pushing the "modules" proposal for C++1x (No, other people aren't that optimistic regarding the time frame ;) ).

Meanwhile there is `extern template` in C++11 to prevent instantiation of templates if you are sure that it will be instantiated in another TU. This could help you already.

Cheers,
Philipp

On 11 October 2011 22:27, Zohar <> wrote:

Hi Guys,

Slow build times especially in .cpp using CGAL inspired my following idea:

http://forums.cgsociety.org/showthread.php?f=89&t=1010489
http://forums.cgsociety.org/showthread.php?f=89&t=1010489

First I would appreciate your opinion on my idea.
Second I started a discussion with Robert regarding templates, I would
appreciate your comments, since you chose it as your main architecture
design.

You can answer here, and I'll try to relate the stuff to cgtalk.

Zohar

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