[dmd-internals] Compiling DMD on Lion with the Xcode 4.3 SDK

[David Nadlinger]

On 18 Mar 2012, at 16:56, Jacob Carlborg wrote:
> In Xcode 4.3 Apple has replaced the Xcode installer with a regular 
> application to be compatible with app store. This has caused them to 
> move the SDK from /Developer/SDKs/ to 
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
>
> How can this be handled in the DMD makefile?

One additional thing to consider is that users can also have an older 
Xcode version on Lion, which would break just switching paths on $(uname 
-r).

Unfortunately, $(xcode-select -print-path) seems to return nothing if 
the user didn't explicitly specify an instance to use at some point 
before – otherwise, this would be a nice solution.

I guess the only feasible (or at least the easiest) solution would be to 
just detect the presence of the respective directories and set the SDK 
paths accordingly. Or build with the defaults, but that's maybe not an 
option for packaging releases.

David