未定义的符号：10.6.7 中 MacOSX 64 位链接错误的 __dyld_func_lookup

发布于 2024-11-15 10:06:13 字数 791 浏览 5 评论 0原文

我正在尝试编译一个引用 __dyld_func_lookup 的程序。

一切都编译良好，表明包含文件能够找到函数引用。但是，在最终链接时，我收到此错误：

g++ -o ../lib/macosx64/libcogmapapi.dylib -dynamiclib  ./build/CogMapApi.o ./libs/cmlabs/macosx64/AIR.a ./libs/cmlabs/macosx64/CoreLibrary.a  
Undefined symbols:
  "__dyld_func_lookup", referenced from:
      _reference in CoreLibrary.a(dlfcn_darwin.o)
      _dllopen in CoreLibrary.a(dlfcn_darwin.o)
      _dllopen in CoreLibrary.a(dlfcn_darwin.o)
      _dllopen in CoreLibrary.a(dlfcn_darwin.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status

我尝试在链接器中使用 -undefineddynamic_lookup 并且它确实链接正确，但在运行时我得到了未定义的符号，就像我实际引用的一样我的代码中的 __dyld_func_lookup 。我猜我需要链接到一些 dylib 或框架，但我尝试的所有内容（例如 System 和 libdl.dylib ）似乎都不起作用。

任何帮助将不胜感激！

原文

I'm trying to compile a program that references __dyld_func_lookup.

Everything compiles fine, indicating include files were able to find the function reference. However, upon the final linking, I get this error:

g++ -o ../lib/macosx64/libcogmapapi.dylib -dynamiclib  ./build/CogMapApi.o ./libs/cmlabs/macosx64/AIR.a ./libs/cmlabs/macosx64/CoreLibrary.a  
Undefined symbols:
  "__dyld_func_lookup", referenced from:
      _reference in CoreLibrary.a(dlfcn_darwin.o)
      _dllopen in CoreLibrary.a(dlfcn_darwin.o)
      _dllopen in CoreLibrary.a(dlfcn_darwin.o)
      _dllopen in CoreLibrary.a(dlfcn_darwin.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status

I've tried using -undefined dynamic_lookup in the linker and it does link properly, but then at runtime I get the undefined symbol as I do actually reference __dyld_func_lookup in my code. I'm guessing I need to link to some dylib or framework, but everything I tried like System and libdl.dylib did not seem to work.

Any help would be most appreciated!

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