绑定兄弟打印机SDK框架到xamarin ios绑定库

Question

我正在尝试使用兄弟打印机移动 sdk for ios (BRPtouchPrinterKit.framework) 创建一个 xamarin.ios 绑定库。

当您使用“/Users/[用户名]/Desktop/BrotherPrinterSDK/bpsdkBinding/bpsdkBinding/BRPtouchPrinterKit.framework/Versions/A/”下的“BRPtouchPrinterKit”时，Xamarin.iOS 绑定项目编译和构建不会出错在 mac 中。

当我尝试在示例中使用 dll 并尝试运行相同的 dll 时，我在运行时遇到以下错误。

clang : error : linker command failed with exit code 1 (use -v to see invocation)
MTOUCH : error MT5210: Native linking failed, undefined symbol: std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::find(char, unsigned long) const. Please verify that all the necessary frameworks have been referenced and native libraries are properly linked in.
MTOUCH : error MT5210: Native linking failed, undefined symbol: std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::compare(unsigned long, unsigned long, char const*, unsigned long) const. Please verify that all the necessary frameworks have been referenced and native libraries are properly linked in.
MTOUCH : error MT5210: Native linking failed, undefined symbol: std::__1::__shared_weak_count::__get_deleter(std::type_info const&) const. Please verify that all the necessary frameworks have been referenced and native libraries are properly linked in.
MTOUCH : error MT5210: Native linking failed, undefined symbol: std::__1::__vector_base_common<true>::__throw_length_error() const. Please verify that all the necessary frameworks have been referenced and native libraries are properly linked in.
MTOUCH : error MT5210: Native linking failed, undefined symbol: std::__1::__basic_string_common<true>::__throw_length_error() const. Please verify that all the necessary frameworks have been referenced and native libraries are properly linked in.

Answer 1

我相信您的问题与 SO 上的问题相同： Linking failure with a MonoTouch native library binding

在这种情况下，您需要添加对 libc++ (-lc++) 的引用并确保将 IsCxx 标志设置为 true。这可以在您的绑定项目中的 linkwith.cs 文件中完成，如上面的帖子，例如：

[assembly: LinkWith (... LinkerFlags = "-lc++ [and you may have some other -l* libs listed here here already]", IsCxx = true)]

如果您没有 linkwith.cs 文件，那么您应该能够将上述引用添加到 -lc++ 并在框架的属性中将 IsCxx 标志设置为 true。 （右键单击框架并选择属性）

Answer 2

感谢@jgoldberger

对于可能遇到相同问题的任何人，请通过链接https://forums.xamarin.com/discussion/comment/340581