如何将C ++标准库链接到Monotouch应用程序

Question

我正在将企业库绑定到我的Monotouch应用程序。 由于Objective Sharpie未能创建API而且我必须具有创造性，这是一个艰难的过程 但是现在，在编译终于成功后，我面临着一个链接问题

Undefined symbols for architecture armv7:
  "std::__1::__basic_string_common<true>::__throw_length_error() const", referenced from:
      __ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initIPcEENS_9enable_ifIXsr21__is_forward_iteratorIT_EE5valueEvE4typeES9_S9_ in libWeANDSFLibrary.a(WfStringBody.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::resize(unsigned long, char)", referenced from:
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::overflow(int)in libWeANDSFLibrary.a(WfStringBody.o)
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::str(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)in libWeANDSFLibrary.a(WfStringBody.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::push_back(char)", referenced from:
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::overflow(int)in libWeANDSFLibrary.a(WfStringBody.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_string()", referenced from:
      wflang::CWfStringBody::Float64ToArray(double, unsigned short*)in libWeANDSFLibrary.a(WfStringBody.o)
      std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream()in libWeANDSFLibrary.a(WfStringBody.o)
      std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream()in libWeANDSFLibrary.a(WfStringBody.o)
      virtual thunk to std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream()in libWeANDSFLibrary.a(WfStringBody.o)
      virtual thunk to std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream()in libWeANDSFLibrary.a(WfStringBody.o)
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_stringbuf()in libWeANDSFLibrary.a(WfStringBody.o)
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_stringbuf()in libWeANDSFLibrary.a(WfStringBody.o)
      ...

等。 我尝试按照Wrapping a C++ library in Objective-C is not hiding the C++ symbols中的建议，但它没有用。 有什么想法吗？

Answer 1

您好，似乎您正在使用非c ++编译器进行编译，您可能想尝试在 iOS项目选项中设置它，或者在LinkWith attribute内设置IsCxx = true在 iOS绑定项目

上 iOS项目构建选项上的

可用选项

• - 编译器：GCC
• - 编译器：克++
• - 编译器：铛
• - 编译器：铛++

您应该尝试--compiler:g++或--compiler:clang++

希望这有帮助

亚历

Answer 2

所以最终解决问题的是使用

链接标准C ++库

  

LinkerFlags =“ - lsqlite3.0 -lc ++”

我的整个LinkWith属性如下所示：

  

[assembly：LinkWith（“libMyLibrary.a”，LinkTarget = LinkTarget.ArmV6 | LinkTarget.ArmV7 | LinkTarget.Simulator，SmartLink = true，ForceLoad = true，IsCxx = true，Frameworks =“SystemConfiguration CoreLocation CoreTelephony MobileCoreServices MessageUI”， LinkerFlags =“ - lsqlite3.0 -lc ++”）]