架构 i386 的未定义符号将项目升级到 iOS 5

Question

我一直在搜索 SO 和 Google，但还没有发现任何有用的东西。

我们正在更新现有的 iOS 项目以针对 iOS 5 构建。

我们的项目有两个目标，第一个是我们的静态库，第二个是单元测试应用程序 (GHUnit)。

在构建单元测试目标时，它成功编译了静态库，但随后无法链接它并显示以下输出：

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)

我已经尝试搜索未找到的符号，但谷歌确实有 0 个结果。

我假设静态库是用单元测试目标不是的东西构建的，但我找不到它。

有人有什么建议吗？

干杯

Answer 1

这对我很有效（用粗体捕捉设置）：

Answer 2

如果您不需要代码覆盖，您可以使用以下设置完全禁用它，从而避免尝试调用这些函数。

GCC_INSTRUMENT_PROGRAM_FLOW_ARCS = NO
GCC_GENERATE_TEST_COVERAGE_FILES = NO

Answer 3

llvm_gcda_start_file 和 co 由 LLVM 编译器添加，用于代码覆盖和单元测试。

在项目设置中将 -lprofile_rt 添加到链接器标志应该可以解决此错误。 （较早的教程可能会建议 -lgcov 用于 Xcode 3 和 GCC）

根据Code Coverage on Xcode 4.4.1，不再需要“-lprofile_rt”。

Answer 4

就我而言，我正在为设备构建。切换到模拟器就像魅力一样，但我不知道为什么它会有所不同。 :-)

Answer 5

就我而言，我必须将--coverage 添加到CMAKE_EXE_LINKER_FLAGS 在 Apple Clang Apple LLVM version 9.0.0 (clang-900.0.39.2) 上。这似乎已经解决了它。 以上解决方案均无效。

下面的文章提到了它：

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

Answer 6

我有同样的错误：只需将“libGoogleAnalyticsServices.a”添加到您的文件中