Hi,
        I found your messages (through deal.ii archive / gmane) about the 
/home/nasser/deal.II/lib/liblac.g.so: undefined reference to `__log2' error.

        I got the same error on a kubuntu 9.10 system and the solution I found 
was to 
in addition to removing the prototype declaration from Proto.h, I also removed 
the #define from Lib/rename.h .

        Now, I understand that the function from the math lib accepts floating 
point 
instead of the Lib/util.c log2 function that accepts integer, so I don't know 
if there's a performance penalty. It's late here and I just wanted to post 
this solution for you :)

        So, in the end I compiled it successfully on Kubuntu 9.10 and also on a 
gentoo system, the latter without changing the files, except the Makefile.in, 
following Luca Heltai explanation.
                                Regards,
                                                Nuno
-- 
http://aeminium.org/slug/
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