I try to install kdelibs with brew on Lion but i get http://pastebin.com/8XsMQChu . Any idea how can i resolve this ?

It appears that you are missing 'ltdl' which seems to be a needed dependency of Raptor. I would suggest contacting the Homebrew team in regards to that.

I also spotted that line ...

make[2]: *** No rule to make target `-lltdl', needed by `librdf.la'. Stop.

but libltdl is part of redland.

its kinda weird, I did not have this problem, and I also have redland 1.0.14
the formula has been updated to 1.0.15, you can try updating your homebrew repo.

also, do you have that line in your redland formula?

fails_with_llvm :build => 2334

if you don't, git pull

https://github.com/mxcl/homebrew/commit ... redland.rb

once you get to kdelibs, you might want to try my fork as I am also trying to get several KDE apps install using homebrew

https://github.com/somekool/homebrew