C++ 框架测试应用程序的链接器错误

Question

我想使用AA+ astronomy class framework 并且我只想让示例应用程序运行（它包含在framework zip file 中作为AATest.cpp）

我打开 Xcode，为 C++ 应用程序创建了一个新项目，然后将 AA+.h 和 stdafx.h 文件添加到项目中，因为它们包含在内。然后，当我构建项目时，我收到很多链接器错误，因为它似乎无法找到与某些示例应用代码相关的符号。

我尝试将AA+.h 和stdafx.h 文件的路径添加到Xcode 中构建设置中的库和标头搜索路径，但这并没有改变任何东西，错误仍然存​​在。

我做错了什么？这是我第一次在 Xcode 中使用 C++。我必须先将 AA+ 框架构建为静态库，还是可以这样包含它？

通过 Xcode 编译：

Ld /Users/me/Library/Developer/Xcode/DerivedData/AAPlus-bzgonjwgqlpgescueekcoobljdyf/Build/Products/Debug/AAPlus normal x86_64
    cd "/Users/me/Downloads/aaplus astronomy c++/Example/AAPlus"
    setenv MACOSX_DEPLOYMENT_TARGET 10.7
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk -L/Users/me/Library/Developer/Xcode/DerivedData/AAPlus-bzgonjwgqlpgescueekcoobljdyf/Build/Products/Debug -F/Users/me/Library/Developer/Xcode/DerivedData/AAPlus-bzgonjwgqlpgescueekcoobljdyf/Build/Products/Debug -filelist /Users/me/Library/Developer/Xcode/DerivedData/AAPlus-bzgonjwgqlpgescueekcoobljdyf/Build/Intermediates/AAPlus.build/Debug/AAPlus.build/Objects-normal/x86_64/AAPlus.LinkFileList -mmacosx-version-min=10.7 -stdlib=libc++ -o /Users/me/Library/Developer/Xcode/DerivedData/AAPlus-bzgonjwgqlpgescueekcoobljdyf/Build/Products/Debug/AAPlus

错误：

Undefined symbols for architecture x86_64:
  "CAANutation::TrueObliquityOfEcliptic(double)", referenced from:
      GetSolarRaDecByJulian(double, double&, double&) in main.o
      GetLunarRaDecByJulian(double, double&, double&) in main.o
  "CAADynamicalTime::DeltaT(double)", referenced from:
      GetSolarRaDecByJulian(double, double&, double&) in main.o
  "CAARiseTransitSet::Calculate(double, double, double, double, double, double, double, double, double, double)", referenced from:
      GetSunRiseTransitSet(double, double, double) in main.o
      GetMoonRiseTransitSet(double, double, double) in main.o
  "CAAMoonIlluminatedFraction::PhaseAngle(double, double, double)", referenced from:
      GetMoonIllumination(double, double&, double&, double&) in main.o
  "CAAMoonIlluminatedFraction::PositionAngle(double, double, double, double)", referenced from:
      GetMoonIllumination(double, double&, double&, double&) in main.o
  "CAAMoonIlluminatedFraction::IlluminatedFraction(double)", referenced from:
      GetMoonIllumination(double, double&, double&, double&) in main.o
  "CAAMoonIlluminatedFraction::GeocentricElongation(double, double, double, double)", referenced from:
      GetMoonIllumination(double, double&, double&, double&) in main.o
  "CAACoordinateTransformation::Ecliptic2Equatorial(double, double, double)", referenced from:
      GetSolarRaDecByJulian(double, double&, double&) in main.o
      GetLunarRaDecByJulian(double, double&, double&) in main.o
  "CAASun::ApparentEclipticLatitude(double)", referenced from:
      GetSolarRaDecByJulian(double, double&, double&) in main.o
  "CAASun::ApparentEclipticLongitude(double)", referenced from:
      GetSolarRaDecByJulian(double, double&, double&) in main.o
  "CAADate::CAADate(double, bool)", referenced from:
      PrintTime(double, char const*) in main.o
  "CAADate::CAADate(long, long, double, bool)", referenced from:
      PrintSunAndMoonInfo(int, int, int, double, double) in main.o
  "CAAMoon::EclipticLatitude(double)", referenced from:
      GetLunarRaDecByJulian(double, double&, double&) in main.o
  "CAAMoon::EclipticLongitude(double)", referenced from:
      GetLunarRaDecByJulian(double, double&, double&) in main.o
  "CAADate::Get(long&, long&, long&, long&, long&, double&) const", referenced from:
      PrintTime(double, char const*) in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

XCode

您可以在 XCode 中执行以下操作：

1. 新建项目AATest
2. 将包含框架代码的aaplus/ 文件夹复制到项目文件夹中
3. 在您的 XCode 项目中，按住 control 并单击 Source
4. 选择添加>现有文件...
5. 选择aaplus/ 文件夹并将其添加到您的项目中
6. 构建。

可执行文件位于build/Debug/AATest。

另类

由于项目包含一个文件CMakeLists.txt，您可以使用cmake 构建您的程序。在您的框架文件夹中，在终端上运行以下命令：

mkdir build/
cd build/
cmake ..
make