Excellent!

Thanks Kyle!

-- Tito

On 27/08/2010, at 14:02, Kyle Sluder wrote:

> Read this: 
> http://sealiesoftware.com/blog/archive/2010/8/16/TargetConditionalsh.html
> 
> --Kyle Sluder
> (Sent from the road)
> 
> On Aug 27, 2010, at 1:47 PM, Tito Ciuro <tci...@mac.com> wrote:
> 
>> Hello,
>> 
>> I have code that's part of a framework and I'd like to port it to iOS. I 
>> tried isolating the code like so:
>> 
>> //
>> //  RootViewController.m
>> //  iPhoneTest
>> 
>> #import "RootViewController.h"
>> 
>> @implementation RootViewController
>> 
>> 
>> #pragma mark -
>> #pragma mark View lifecycle
>> 
>> - (void)viewWillAppear:(BOOL)animated {
>>   [super viewWillAppear:animated];
>> }
>> 
>> - (NSUInteger)systemPageSize
>> {
>>   static NSUInteger __sSystemPageSize = NSNotFound;
>> 
>> #if TARGET_OS_MAC
>>   if (NSNotFound == __sSystemPageSize) {
>>       NSTask *task = [[NSTask alloc] init];
>> 
>>       // <do something here...>
>> 
>>       [task release];
>>   }
>> #elif TARGET_OS_IPHONE
>> 
>>       // <do something here...>
>> 
>> #endif
>> 
>>   return __sSystemPageSize;
>> }
>> 
>> When I compile the standard iPhone boilerplate app from Xcode I get the 
>> following error:
>> 
>>> /Users/tciuro/Desktop/iPhoneTest/Classes/RootViewController.m: In function 
>>> '-[RootViewController systemPageSize]':
>>> /Users/tciuro/Desktop/iPhoneTest/Classes/RootViewController.m:23: error: 
>>> 'NSTask' undeclared (first use in this function)
>>> /Users/tciuro/Desktop/iPhoneTest/Classes/RootViewController.m:23: error: 
>>> (Each undeclared identifier is reported only once
>>> /Users/tciuro/Desktop/iPhoneTest/Classes/RootViewController.m:23: error: 
>>> for each function it appears in.)
>>> /Users/tciuro/Desktop/iPhoneTest/Classes/RootViewController.m:23: error: 
>>> 'task' undeclared (first use in this function)
>>> {standard input}:59:non-relocatable subtraction expression, 
>>> "L_OBJC_SELECTOR_REFERENCES_0" minus "L00000000001$pb"
>>> {standard input}:59:symbol: "L_OBJC_SELECTOR_REFERENCES_0" can't be 
>>> undefined in a subtraction expression
>>> {standard input}:54:non-relocatable subtraction expression, 
>>> "L_OBJC_CLASSLIST_SUP_REFS_$_0" minus "L00000000001$pb"
>>> {standard input}:54:symbol: "L_OBJC_CLASSLIST_SUP_REFS_$_0" can't be 
>>> undefined in a subtraction expression
>>> {standard input}:unknown:Undefined local symbol 
>>> L_OBJC_CLASSLIST_SUP_REFS_$_0
>>> {standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_0
>> 
>> 
>> I know NSTask doesn't exist on iOS, so I was hoping to implement the method 
>> that would work for both Mac and iOS by specifying TARGET_OS_MAC and 
>> TARGET_OS_IPHONE. What am I missing?
>> 
>> Thanks,
>> 
>> -- Tito
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