[Haskell-beginners] problems loading zeromq

[fa-ml]

Hello list,
	I am trying to cabal install hbro. After a bit of fiddling I
stumbled on this:

	Resolving dependencies...
	Configuring hbro-1.1.2.1...
	Building hbro-1.1.2.1...
	Preprocessing library hbro-1.1.2.1...
	[ 1 of 19] Compiling Paths_hbro       ( dist/build/autogen/Paths_hbro.hs, dist/build/Paths_hbro.o )
	[ 2 of 19] Compiling Hbro.Keys        ( Hbro/Keys.hs, dist/build/Hbro/Keys.o )
	Loading package ghc-prim ... linking ... done.
	[omissis]
	Loading package semigroups-0.12.2 ... linking ... done.
	Loading package zeromq3-haskell-0.5.1 ... linking ... ghc: /home/user/.cabal/lib/zeromq3-haskell-0.5.1/ghc-7.4.1/HSzeromq3-haskell-0.5.1.o: unknown symbol `zmq_ctx_new'
	ghc: unable to load package `zeromq3-haskell-0.5.1'
	cabal: Error: some packages failed to install:
	hbro-1.1.2.1 failed during the building phase. The exception was:
	ExitFailure 1

I am puzzled because I cabal installed zeromq3-haskell *and*
downloaded/installed 0mq3 (./configure; make; su; make install).
0mq version is 3.2.5 and I am running debian/stable(i386).

Any idea on what is happening here?
Thanks in advance
-F
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