Clang and undefined symbols when building a library

Question

I\'m working on a C++ framework, and there\'s a few issues when I compile it on OSX with Clang.

First of, I\'m using some other libraries, such as openssl, and clang

Answer 1

I don't recommend to enable global dynamic lookup:

-undefined dynamic_lookup which will mark all undefined symbols as having to be looked up at runtime.

Much more safe way to resolve it for specific symbols:

-Wl,-U,symbol_name, which only does so for the given symbol (note: you have to prepend an underscore to the symbol name)

You could also use weak dynamic linking:

extern int SayHello() __attribute__((weak));