您如何告诉Clang CompilerInvocation使用框架？

Question

I have code that builds a CompilerInvocation with the Clang static libraries. I would like to tell that invocation to use specific frameworks, just like using the -framework Clang front-end option. In particular, I'm looking for these "side effects" of using a framework:

• the compiler locates the framework on the system using the framework search path;
• the compiler knows where to find framework headers identified through a path like <Framework/Header.h> .

At this point, I think that I've looked everywhere in the option sub-objects of the CompilerInvocation class, and the closest thing that I can identify related to that is the header search path. I can't seem to find a way to tell the CompilerInvocation to look for a specific framework.

How is that supposed to happen? I'm using a manually-built CompilerInvocation instead of building it through command-line arguments because that seems to be the only way to pass a memory buffer as a source unit instead of a file.

Answer 1

I haven't found the way to do it through the CompilerInvocation object, but you can get a CompilerInvocation from command-line arguments using clang:: createInvocationFromCommandLine . When using -framework arguments, the resulting invocation can correctly #include framework headers. This isn't awesome, but it works (other than the compiler will complain that the frameworks are unused linker input, probably because no linking phase occurs).

Of course, this means that a way through the CompilerInvocation has to exist, because that's the only thing that's returned. I could believe that the logic to get frameworks from the framework path is private, though.