Undefined symbols for architecture i386 Upgrading project to iOS 5

Question

I've been scouring SO and Google but haven't found anything helpful yet.

We're updating our existing iOS project to build against iOS 5.

Our project has two targets, the first is our static library and the second is a Unit Test application (GHUnit).

When building the unit test target it successfully compiles the static library, but then fails to link against it with the following output:

Ld /Users/XXXXXX/Library/Developer/Xcode/DerivedData/XXXXXXLibrary-egoqfplddstqvwaigwuiqfqplcax/Build/Products/Debug-iphonesimulator/UnitTests.app/UnitTests normal i386
    cd /Users/XXXXXX/Documents/iOS/trunk
    setenv MACOSX_DEPLOYMENT_TARGET 10.6
    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/iPhoneSimulator5.0.sdk -L/Users/XXXXXX/Library/Developer/Xcode/DerivedData/XXXXXXLibrary-egoqfplddstqvwaigwuiqfqplcax/Build/Products/Debug-iphonesimulator -F/Users/XXXXXX/Library/Developer/Xcode/DerivedData/XXXXXXLibrary-egoqfplddstqvwaigwuiqfqplcax/Build/Products/Debug-iphonesimulator -F/Users/XXXXXX/Documents/iOS/trunk -F/Users/XXXXXX/Documents/iOS/trunk/UnitTests -filelist /Users/XXXXXX/Library/Developer/Xcode/DerivedData/XXXXXXLibrary-egoqfplddstqvwaigwuiqfqplcax/Build/Intermediates/XXXXXXLibrary.build/Debug-iphonesimulator/UnitTests.build/Objects-normal/i386/UnitTests.LinkFileList -mmacosx-version-min=10.6 -Xlinker -objc_abi_version -Xlinker 2 -ObjC -all_load -Wl -Xlinker -no_implicit_dylibs -D__IPHONE_OS_VERSION_MIN_REQUIRED=50000 -framework SystemConfiguration -framework CoreLocation -framework CoreData /Users/XXXXXX/Library/Developer/Xcode/DerivedData/XXXXXXLibrary-egoqfplddstqvwaigwuiqfqplcax/Build/Products/Debug-iphonesimulator/XXXXXX.a -framework GHUnitIOS -framework CoreGraphics -framework Foundation -framework UIKit -o /Users/XXXXXX/Library/Developer/Xcode/DerivedData/XXXXXXLibrary-egoqfplddstqvwaigwuiqfqplcax/Build/Products/Debug-iphonesimulator/UnitTests.app/UnitTests

    Undefined symbols for architecture i386:
      "_llvm_gcda_start_file", referenced from:
          ___llvm_gcov_writeout in XXXXXX.a(NSObject+SBJSON.o)
          ___llvm_gcov_writeout in XXXXXX.a(NSString+SBJSON.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonBase.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonParser.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonWriter.o)
          ___llvm_gcov_writeout in XXXXXX.a(XXXXXXReachability.o)
          ___llvm_gcov_writeout in XXXXXX.a(XXXXXX.o)
          ...
      "_llvm_gcda_emit_function", referenced from:
          ___llvm_gcov_writeout in XXXXXX.a(NSObject+SBJSON.o)
          ___llvm_gcov_writeout in XXXXXX.a(NSString+SBJSON.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonBase.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonParser.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonWriter.o)
          ___llvm_gcov_writeout in XXXXXX.a(XXXXXXReachability.o)
          ___llvm_gcov_writeout in XXXXXX.a(XXXXXX.o)
          ...
      "_llvm_gcda_emit_arcs", referenced from:
          ___llvm_gcov_writeout in XXXXXX.a(NSObject+SBJSON.o)
          ___llvm_gcov_writeout in XXXXXX.a(NSString+SBJSON.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonBase.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonParser.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonWriter.o)
          ___llvm_gcov_writeout in XXXXXX.a(XXXXXXReachability.o)
          ___llvm_gcov_writeout in XXXXXX.a(XXXXXX.o)
          ...
      "_llvm_gcda_end_file", referenced from:
          ___llvm_gcov_writeout in XXXXXX.a(NSObject+SBJSON.o)
          ___llvm_gcov_writeout in XXXXXX.a(NSString+SBJSON.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonBase.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonParser.o)
          ___llvm_gcov_writeout in XXXXXX.a(SBJsonWriter.o)
          ___llvm_gcov_writeout in XXXXXX.a(XXXXXXReachability.o)
          ___llvm_gcov_writeout in XXXXXX.a(XXXXXX.o)
          ...
      "_llvm_gcda_increment_indirect_counter", referenced from:
          -[SBJsonParser scanValue:] in XXXXXX.a(SBJsonParser.o)
          -[SBJsonParser scanRestOfString:] in XXXXXX.a(SBJsonParser.o)
          -[SBJsonWriter appendString:into:] in XXXXXX.a(SBJsonWriter.o)
          -[XXXXXX loginSuccessfulCallback:XXXXXXHttpResult:] in XXXXXX.a(XXXXXX.o)
          +[XXXXXXDataTank sharedDataTankManager] in XXXXXX.a(XXXXXXDataTank.o)
          -[XXXXXXDataTank processFiveHundredSeriesHttpResult:] in XXXXXX.a(XXXXXXDataTank.o)
          -[XXXXXXDataTank networkActive] in XXXXXX.a(XXXXXXDataTank.o)
          ...
    ld: symbol(s) not found for architecture i386
    clang: error: linker command failed with exit code 1 (use -v to see invocation)

I've tried searching for the unfound symbols but google literally has 0 results.

I assume the static library is being built with something that the unit test target isn't but I cannot find it.

Does anyone have any suggestions?

Cheers

This error generally comes when a framework isn't available. Here I'm not sure which framework is missing, but maybe you can try figuring out missing frameworks. — Sahil Khanna, Oct 31 '11 at 04:53

score 49 · Answer 1 · answered Sep 18 '13 at 13:33

49

This worked for me well (catch the settings with bold):

enter image description here

answered Sep 18 '13 at 13:33

Geri Borbás

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"Instrument Program Flow" is my problem! Thanks! – LE SANG Nov 26 '13 at 08:20
1

Yap, in my case it fixed [Google Analytics iOS SDK 3.x](https://developers.google.com/analytics/devguides/collection/ios/v3/) issues. – Geri Borbás Jan 20 '14 at 10:21
1

Thx! needed 'Instrument Program Flow' as well – Papasmile Oct 06 '16 at 18:26

score 12 · Answer 2 · answered Jan 03 '12 at 10:55

12

If you don't need the code coverage, you can complete disable it by using the following settings, thus avoiding the attempted calls to those functions.

GCC_INSTRUMENT_PROGRAM_FLOW_ARCS = NO
GCC_GENERATE_TEST_COVERAGE_FILES = NO

answered Jan 03 '12 at 10:55

cahlbin

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This was the fix for me. I had (unsuccessfully) setup gcov at one point and this issue mysteriously popped up. – Sam Brodkin Apr 22 '12 at 19:01
If you disable this, then you will probably need to recompile the lib. – Brian Liang Jan 04 '13 at 04:59

score 4 · Answer 3 · edited May 23 '17 at 12:24

4

llvm_gcda_start_file and co are added by LLVM compiler for code coverage and unit testing.

adding -lprofile_rt to Linker Flags in your project settings should solve this error. (older tutorial might suggest -lgcov which is for Xcode 3 and GCC)

According to Code Coverage on Xcode 4.4.1 "-lprofile_rt" is no longer required.

edited May 23 '17 at 12:24

Community

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answered Nov 08 '11 at 08:09

Du Song

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I had the same problem and added the -lprofile_rt to Linker Flags, however that caused this error: `library not found for -lprofile_rt` – Josef Salyer Nov 30 '11 at 15:57
Haven't try with Xcode 4.3beta, but that did work in my 4.2, just try: 1) check if they exist: `/usr/lib/libprofile_rt.a /usr/lib/libprofile_rt.dylib /Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/libprofile_rt.a /Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/libprofile_rt.dylib` 2) check your project setting have the right path and etc... – Du Song Dec 01 '11 at 06:13

score 3 · Answer 4 · answered May 08 '19 at 23:18

In my case, I had to add --coverage to the CMAKE_EXE_LINKER_FLAGS on Apple Clang Apple LLVM version 9.0.0 (clang-900.0.39.2). That seems to have fixed it. None of the above solutions worked.

The article below mentions it:

https://asmaloney.com/2017/01/code/code-coverage-of-unit-tests-using-qt-5-on-macos/

score 1 · Answer 5 · answered Feb 16 '12 at 09:53

1

In my case I was building for device. Switching to simulator worked like charm, but I have no clue why it is different. :-)

answered Feb 16 '12 at 09:53

hfossli

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score -3 · Answer 6 · answered Dec 12 '13 at 13:33

-3

I Had the same error : Just add "libGoogleAnalyticsServices.a" into your files

answered Dec 12 '13 at 13:33

Zubair

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What does Google Analytics have to do with LLVM and gcov? – MdaG Jan 09 '14 at 13:35

Undefined symbols for architecture i386 Upgrading project to iOS 5

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