Undefined symbols: _poll

[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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[Tom Lane]

Joe Lester <jo********@sweetwater.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.dylib 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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[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 [phone]
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