Undefined symbols: _poll - PostgreSQL Database

Joe Lester

I'm just moved my Postgres client project from Mac 10.2.8 to 10.3.5.
It's an Objective-C program that links to libpq.a (the header file is
libpq-fe.h). However, when I try to compile now I get the following
linking error:

ld: Undefined symbols: _poll

Does this sound familiar to anyone? My guess is that _poll is
referenced somewhere in libpq.a. Anyone have any ideas on how to get
the linking happening on Mac OS 10.3.5?

Thanks!

Joe

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Nov 23 '05 #1

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1607

Tom Lane

Joe Lester <jo********@swe etwater.com> writes:

I'm just moved my Postgres client project from Mac 10.2.8 to 10.3.5.
It's an Objective-C program that links to libpq.a (the header file is
libpq-fe.h). However, when I try to compile now I get the following
linking error: ld: Undefined symbols: _poll

poll() is a system function that seems to be in
/usr/lib/libSystem.B.dyl ib on my 10.3.5 machine.
Couldn't say why this isn't included automatically
in your program --- we certainly aren't doing anything
to explicitly link it into the standard PG programs
that use libpq.

regards, tom lane

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Nov 23 '05 #2

David Helgason

On 30. sep 2004, at 21:35, Joe Lester wrote:

I'm just moved my Postgres client project from Mac 10.2.8 to 10.3.5.
It's an Objective-C program that links to libpq.a (the header file is
libpq-fe.h). However, when I try to compile now I get the following
linking error:

ld: Undefined symbols: _poll

Does this sound familiar to anyone? My guess is that _poll is
referenced somewhere in libpq.a. Anyone have any ideas on how to get
the linking happening on Mac OS 10.3.5?

We had the same problem. In our case the trick was to compile libpq on
OS X 10.3. The poll function was added in 10.3 (it's based on the
select function, but at least it exists).

Reading the description of your problem it sounds different.

d.
--
David Helgason,
Business Development et al.,
Over the Edge I/S (http://otee.dk)
Direct line +45 2620 0663
Main line +45 3264 5049
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Nov 23 '05 #3

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