Question

huh?

google returns nothing on what this error is… All I am doing is adding a movieplayercontroller to a flipside iphone app.

cc1obj: error: type '({anonymous})' does not have a known size
{standard input}:228:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_9" minus "L00000000004$pb"
{standard input}:228:symbol: "L_OBJC_SELECTOR_REFERENCES_9" can't be undefined in a subtraction expression
{standard input}:218:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_8" minus "L00000000004$pb"
{standard input}:218:symbol: "L_OBJC_SELECTOR_REFERENCES_8" can't be undefined in a subtraction expression
{standard input}:215:non-relocatable subtraction expression, "L_OBJC_CLASS_REFERENCES_2" minus "L00000000004$pb"
{standard input}:215:symbol: "L_OBJC_CLASS_REFERENCES_2" can't be undefined in a subtraction expression
{standard input}:207:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_7" minus "L00000000004$pb"
{standard input}:207:symbol: "L_OBJC_SELECTOR_REFERENCES_7" can't be undefined in a subtraction expression
{standard input}:203:non-relocatable subtraction expression, "L_OBJC_CLASS_REFERENCES_1" minus "L00000000004$pb"
{standard input}:203:symbol: "L_OBJC_CLASS_REFERENCES_1" can't be undefined in a subtraction expression
{standard input}:151:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_6" minus "L00000000003$pb"
{standard input}:151:symbol: "L_OBJC_SELECTOR_REFERENCES_6" can't be undefined in a subtraction expression
{standard input}:147:non-relocatable subtraction expression, "L_OBJC_CLASS_FlipsideViewController" minus "L00000000003$pb"
{standard input}:147:symbol: "L_OBJC_CLASS_FlipsideViewController" can't be undefined in a subtraction expression
{standard input}:116:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_4" minus "L00000000002$pb"
{standard input}:116:symbol: "L_OBJC_SELECTOR_REFERENCES_4" can't be undefined in a subtraction expression
{standard input}:110:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_5" minus "L00000000002$pb"
{standard input}:110:symbol: "L_OBJC_SELECTOR_REFERENCES_5" can't be undefined in a subtraction expression
{standard input}:80:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_2" minus "L00000000001$pb"
{standard input}:80:symbol: "L_OBJC_SELECTOR_REFERENCES_2" can't be undefined in a subtraction expression
{standard input}:74:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_3" minus "L00000000001$pb"
{standard input}:74:symbol: "L_OBJC_SELECTOR_REFERENCES_3" can't be undefined in a subtraction expression
{standard input}:67:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_1" minus "L00000000001$pb"
{standard input}:67:symbol: "L_OBJC_SELECTOR_REFERENCES_1" can't be undefined in a subtraction expression
{standard input}:64:non-relocatable subtraction expression, "L_OBJC_CLASS_REFERENCES_0" minus "L00000000001$pb"
{standard input}:64:symbol: "L_OBJC_CLASS_REFERENCES_0" can't be undefined in a subtraction expression
{standard input}:58:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_0" minus "L00000000001$pb"
{standard input}:58:symbol: "L_OBJC_SELECTOR_REFERENCES_0" can't be undefined in a subtraction expression
{standard input}:54:non-relocatable subtraction expression, "L_OBJC_CLASS_FlipsideViewController" minus "L00000000001$pb"
{standard input}:54:symbol: "L_OBJC_CLASS_FlipsideViewController" can't be undefined in a subtraction expression
{standard input}:unknown:Undefined local symbol L_OBJC_CLASS_FlipsideViewController
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_0
{standard input}:unknown:Undefined local symbol L_OBJC_CLASS_REFERENCES_0
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_1
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_3
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_2
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_5
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_4
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_6
{standard input}:unknown:Undefined local symbol L_OBJC_CLASS_REFERENCES_1
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_7
{standard input}:unknown:Undefined local symbol L_OBJC_CLASS_REFERENCES_2
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_8
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_9

after turning the compiler to clang(llvc)

I got this Internal Compiler error : segmentation fault

-(IBAction)clickedOpenMovie:(void)sender
{
    NSString *myString = [NSString stringWithFormat:@"http://localhost:1935/mystream/mystream.sdp"];

    NSURL *myURL = [NSURL URLWithString:myString];

   [self playMovieAtURL:myURL];

}

Answer 1

-(IBAction)clickedOpenMovie:(void)sender

That’s wrong. void means no type, and you cannot pass an argument of no type to a function. That’s probably what’s getting you the error from cc1obj.

The correct signature for an action method is:

-(IBAction)clickedOpenMovie:(id)sender

id is the type of any Objective-C object.

NSString *myString = [NSString stringWithFormat:@"http://localhost:1935/mystream/mystream.sdp"];

This is both wrong, because that is not a format string, and pointless, because you already have the finished string there. Cut out the message and just assign the string directly to the variable:

NSString *myString = @"http://localhost:1935/mystream/mystream.sdp";

You should only use stringWithFormat: when you have a format string and some values you want spliced into it.