Re: Problem compiling on Panther then running on Jaguar
Re: Problem compiling on Panther then running on Jaguar
- Subject: Re: Problem compiling on Panther then running on Jaguar
- From: Eric Albert <email@hidden>
- Date: Thu, 27 Nov 2003 14:18:12 -0800
At 4:44 PM +0200 11/27/03, Jeff Schneiderman wrote:
I've got a Cocoa app which is compiled in Xcode 1.0.1. It calls
CGSetLocalEventsFilterDuringSupressionState() from the
ApplicationServices framework. The project was originally built in
and ran fine in Jaguar. I'm now building using the same code with
Xcode in Panther (10.3.1). It builds and runs fine in Panther, but
on Jaguar (10.2.8) it crashes. The console log shows the following
error message:
dyld: Undefined symbols: undefined reference to
_CGSetLocalEventsFilterDuringSuppressionState expected to be defined
in ApplicationServices
If I comment out the call to
CGSetLocalEventsFilterDuringSupressionState, the rest of the app
runs fine including calls to CGSetLocalEventsSuppressionInterval and
CGEnableEventStateCombining.
Is there any significance in the dyld message spelling
_CGSetLocalEventsFilterDuringSuppressionState (two "p"s) when the
function name is documented and used as
CGSetLocalEventsFilterDuringSupressionState?
Yep. On Panther, CGRemoteOperation declares
CGSetLocalEventsFilterDuringSuppressionState (two 'p's) and #define's
the one-p version to the two-p version. So when you compile your
code against a Panther system, the preprocessor sees the #define and
changes your code to use the two-p version, which your code then
links against. When you go to run your application on Jaguar, it
fails because the two-p version doesn't exist there.
You can work around this in one of three ways:
1) Build your application on Jaguar.
2) Build your application on Panther, but use the 10.2.7 SDK.
3) #undef CGSetLocalEventsFilterDuringSupressionState after you
#include CGRemoteOperation.h, and add a declaration for the one-p
version after the #undef.
Hope this helps,
Eric
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