Hi Hugues, I've had the same error on my notebook. It was because I had installed ('make install') a former parrot version and the linker tried to link to /usr/local/lib/libparrot.so because this is in search-path before 'local' blib/lib/libparrot.so. Removing /usr/local/lib/libparrot.* worked for me.
Regards, Kiwi (at work)