Re: Can a 32bit only MacOS Application use 64bit-only Frameworks?
Re: Can a 32bit only MacOS Application use 64bit-only Frameworks?
- Subject: Re: Can a 32bit only MacOS Application use 64bit-only Frameworks?
- From: Mike Abdullah <email@hidden>
- Date: Tue, 30 Sep 2014 20:54:41 +0100
On 30 Sep 2014, at 20:49, Motti Shneor <email@hidden> wrote:
> Hello everyone. This seems to be an upside-down question, but bare with me...
>
> Our Mac Client-side application can (sadly) only be built and run in 32bit-only. Reason is: bit parts of it are legacy 32bit-only C++ code shared with other platforms (Windows, Android, Linux, etc.) client code as well as the Windows-only server. This code contains networking-protocol code which is 64bit unsafe, and so it can't really be replaced.
>
> Until All platforms and products move together to 64bit, we're bound to build our app 32bit only.
>
> Now I'm building a new module for this application as an external private dynamic framework. I would like to use ARC, and the new niceties of modern Obj-C runtime for the new framework, but these are only available in 64bit-only builds.
>
> So… Could my 32bit-only Mac Application depend-on, load, link, and use, a 64bit-only framework?
>
> As far as I know the ObjC-runtime is compiled into the binary, and so it CAN theoretically be different for the framework and the application. But this is just a guess.
No, a 32bit process can’t load 64bit code. What you can potentially do though, is have a 64 _helper_ for your app, which loads and works with the framework. The modern way to do this would be an XPC process.
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