Undefined symbols for architecture armv7 after using singleton

Question

When I try to use this code:

FacebookViewController *manager = [FacebookViewController sharedManager];

to call a shared manager with this in the .h

+ (FacebookViewController *) sharedManager;

I get this:

Undefined symbols for architecture armv7:
  "_OBJC_CLASS_$_FacebookViewController", referenced from:
  objc-class-ref in ContactFBSViewController.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

What is the problem?

Are you using any third party static libraries? – Ilanchezhian Nov 21 '12 at 16:30 — Ilanchezhian, Nov 21 '12 at 16:30

score 0 · Accepted Answer · answered Nov 21 '12 at 16:31

0

I got that error when I used older Facebook iOS SDK in XCode 4.5.

When I updated Facebook SDK to 3.1 and used the new API, I no longer got that error.

answered Nov 21 '12 at 16:31

8suhas

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I'm using the latest SDK, with the Facebook.h file – Alessandro Nov 21 '12 at 16:31
Then I am not sure. Check this answer if it helps: http://stackoverflow.com/a/10415850/1017099 – 8suhas Nov 21 '12 at 16:37
1

I solvd the problem. It was something related to NSNotifications from a sample app – Alessandro Nov 21 '12 at 20:31

Undefined symbols for architecture armv7 after using singleton

1 Answers1