Re: [Qemu-devel] [PATCH v10 5/8] module: implement module loading

[Paolo Bonzini]

Il 18/09/2013 16:44, Richard Henderson ha scritto:
> On 09/18/2013 04:45 AM, Paolo Bonzini wrote:
>> But on Mac OS X a bundle (module loaded with dlopen) cannot have a
>> dependency on another bundle, afaik.
> 
> The documentation for NSAddImage suggests that they can:
> 
>> NSADDIMAGE_OPTION_WITH_SEARCHING
>> With this option, the image_name passed for the library and all its
>> dependents is affected by the various dyld environment variables as if this
>> library were linked into the program.
> 
> Note "and all its dependents".

The module can have shared libraries as dependencies.  IIRC it cannot
have other modules.

But perhaps as you wrote yesterday the SPICE core can be built as a
shared library (i.e. compiled with -shared and linked to a .dylib file).

> Failing that, it appears that explicit control over search paths can be had
> from Objective C, via the NSBundle class.

Everything you can do in ObjC you can also do in C with the
corresponding CoreFoundation library, in this case CFBundle, but it
looks like "that" bundle is a different thing than a Mach-O bundle.  It
is a directory that the UI shows as if it were a single file.  WTH...

> Something for someone who actually cares about macosx to work on.

Sure, at this point making Mac OS X not support modules actually makes
sense.  ELF and Windows seem to be okay.

Paolo