Includes

[Pupeno]

Hello,
I am trying to install EUnit2 on my system to use it from one of my packages 
and it lead to some general questions about includes/header files.

Where should header files needed for others to use my library go ?
I have Erlang on /usr/lib/erlang/ so my project, let's suppose Serlvers, go 
into:
/usr/lib/erlang/serlvers-x.y.z/
where x.y.z is the version (0.1.0 now, 0.2.0 soon). Is that right ? wrong ? 
nobody knows ?
Then include files would go on:
/usr/lib/erlang/serlvers-x.y.z/include/
right ?
How should then the applications using Serlvers include those files ?

-include("/usr/lib/erlang/serlvers-0.1.0/include/dns.hrl"). I don't think full 
paths are right here.
-include("serlvers-0.1.0/include/dns.hrl"). and adding -l /usr/lib/erlang/ at 
build time ? Then in the next patchlevel serlvers-0.1.1, whatever was using 
serlvers won't work.
-include("dns.hrl"). then the build system should find out what version of 
serlvers are there and which one to use to pass to -l, nasty.

And this takes me to a more problematic point: How should header files of 
project A include header files of project A and project B ?

Supouse that I have /usr/lib/erlang/serlvers-x.y.z/include/common.hrl, should 
dns.hrl -include("common.hrl") ? -include("include/common.hrl") ? 
-include("serlvers-0.1.0/include/common.hrl")* ? or what ?

* it would requiring changing all the include paths each time I change 
versions.

Any help is really appreciated, I am lost here.
Thank you.
-- 
Pupeno <pupeno@REDACTED> (http://pupeno.com)
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