libraries compiled with clang

[Richi Lists <ricul77@gmail.com>]

Hi everybody,

gcc is the default compiler for debian, and all the libraries in the
repository are compiled with gcc.
clang is also in the repository. But if I want to compile anything other
than the simplest toy program, I also need libraries. Maintaining them
by hand is a nightmare if you're used to just apt-get them.

So, is there any official guideline for inclusion of libraries compiled
with alternative compilers into the repository.
I read recently that one of the BSD distros switched to using clang as
the default compiler. I'm not suggesting that debian should do that.
I 'm just trying to find out what would be a good solution to have the
same ease of use in debian for compiling with clang as we have for gcc.

I thought about the following alternatives:
1) have them in the same repository
  + easy to compile your app for gcc and clang at the same time
  - adds a lot of duplication
  - users might not know which versions of a lib they need
2) handle it like a separate architecture
  + good separation
  + maybe possible to compile without modification of the packaging
  - would result in n*m architecture/repositories
  - separate installation required (unless multiarch could suffice here)

Some time ago, I started by building some packages for the boost libs
compiled with clang. (http://blog.ulrichard.ch/?p=324) It's in no shape
to be included anywhere. 
I'm just curious if its worth continuing in that direction, or if there
is already a consent for another solution.

Rgds
Richard