Compiling for iOS 3.1.3 gives "Undefined symbols for architecture i386"

Question

How can I compile an iPhone project against Base SDK "iOS 3.1.3" without getting error messages saying "Undefined symbols for architecture i386"?

When using Base SDK "iOS 5.0" everything works fine, but I need to make sure the application works under iOS 3.1.3.

I use XCode 4.2. My frameworks all point to /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.3.sdk/...

BUILD LOG:

Ld "***" normal i386
    cd ***
    setenv MACOSX_DEPLOYMENT_TARGET 10.5
    setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang
      -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.3.sdk
      -L/Users/***/Library/Developer/Xcode/DerivedData/***/Build/Products/Debug-iphonesimulator
      -F/Users/***/Library/Developer/Xcode/DerivedData/***/Build/Products/Debug-iphonesimulator
      -filelist "/Users/***/Library/Developer/Xcode/DerivedData/***/Build/Intermediates/***.build/Debug-iphonesimulator/***.build/Objects-normal/i386/***.LinkFileList"
      -mmacosx-version-min=10.5
      -Xlinker -objc_abi_version
      -Xlinker 2 -Xlinker -no_implicit_dylibs
      -D__IPHONE_OS_VERSION_MIN_REQUIRED=30000 -lsqlite3
      -framework Foundation -framework UIKit -framework CoreGraphics
      -o "/Users/***/Library/Developer/Xcode/DerivedData/***/Build/Products/Debug-iphonesimulator/***.app/***"

Undefined symbols for architecture i386:
  "_OBJC_CLASS_$_NSAutoreleasePool", referenced from:
  "_OBJC_CLASS_$_NSDictionary", referenced from:
  "_OBJC_CLASS_$_NSDecimalNumber", referenced from:
  "_OBJC_CLASS_$_NSMutableCharacterSet", referenced from:
(and 50 more)

ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

score 1 · Accepted Answer · answered Nov 02 '11 at 11:54

1

You should always compile against the latest SDK. If you need to support older devices, you need to change the "Deployment Target" build setting, and test on a real device (since Apple no longer supplies the 3.x simulators).

answered Nov 02 '11 at 11:54

Mike Weller

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I already have the iOS3 simulator on my machine. At least I want to be able to detect problems at compile time (problems being the code using methods only available on iOS4 and later, thus breaking compatability with iOS3). – forthrin Nov 02 '11 at 12:46

score 0 · Answer 2 · answered Nov 02 '11 at 09:49

0

It seems your problem is more to do with device/simulator (i386 refers to the intel chips in your mac) rather than iOS 3.1.3 vs iOS 5.0.

answered Nov 02 '11 at 09:49

jbat100

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score 0 · Answer 3 · edited Jul 30 '12 at 17:50

0

Remove and read your frameworks.

edited Jul 30 '12 at 17:50

Luke

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answered Nov 02 '11 at 10:06

Kirby Todd

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score 0 · Answer 4 · answered Nov 02 '11 at 10:14

0

Try to change MACOSX_DEPLOYMENT_TARGET in build settings to 10.6 or Compiler Default

answered Nov 02 '11 at 10:14

beryllium

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ld: library not found for -lcrt1.10.6.o
I found a [posting](http://stackoverflow.com/questions/1365211/error-in-xcode-project-ld-library-not-found-for-lcrt1-10-6-o) on this, but none of the suggestions fixed the problem. Anyone? – forthrin Nov 02 '11 at 12:39

Compiling for iOS 3.1.3 gives "Undefined symbols for architecture i386"

4 Answers4