From: | Federico Di Gregorio <federico(dot)digregorio(at)dndg(dot)it> |
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To: | Daniele Varrazzo <daniele(dot)varrazzo(at)gmail(dot)com> |
Cc: | psycopg(at)postgresql(dot)org |
Subject: | Re: Build error: math library not linked |
Date: | 2011-03-16 11:41:31 |
Message-ID: | 4D80A1EB.6040601@dndg.it |
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Lists: | psycopg |
On 16/03/11 12:29, Daniele Varrazzo wrote:
> On Mon, Mar 14, 2011 at 2:09 PM, Federico Di Gregorio
> <federico(dot)digregorio(at)dndg(dot)it> wrote:
>
>> > In fact compiling with --no-undefined throws a lot of errors. Can I ask
>> > you why you use it? If it is the correct thing to do we should add
>> > --no-undefined to all builds and pull in the right libraries.
> "man floor(3)" says that link should be done with -lm, so I think it's
> probably just thanks to a tolerant linker that the problem has not
> emerged before (I don't know then if this level of tolerance is the
> least we can expect or if gcc is a very patient guy).
>
> Is it safe enough to add -lm to the linker flags for all the other
> distro? I think so - but I'm no authority on linking at all. I don't
> think instead we should be as strict as add --no-undefined: maybe
> having a mandriva builder in the build farm to check for regressions
> would be enough (it would be great if Christeas could provide it).
At least on Debian (Ubuntu), RedHat and OpenSUSE should be fine.
Adding --no-undefined also seems a good idea to catch future errors.
federico
--
Federico Di Gregorio federico(dot)digregorio(at)dndg(dot)it
Studio Associato Di Nunzio e Di Gregorio http://dndg.it
Those who do not study Lisp are doomed to reimplement it. Poorly.
-- from Karl M. Hegbloom .signature
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