So I'm trying to weak link the SDL_mixer framework (svn source
avaliable here: http://svn.libsdl.org/trunk/SDL_mixer ) to a Cocoa
project, the Mac OS X port of Descent 2 (svn source available here: https://d2x-xl.svn.sourceforge.net/svnroot/d2x-xl
).
I've followed the instructions on Apple's website about weak linking
(see http://developer.apple.com/DOCUMENTATION/MacOSX/Conceptual/BPFrameworks/Concepts/WeakLinking.html
). Specifically, I've added "-weak_framework SDL_mixer" in my Other
Linker Flags build setting.
Here's the problem: weak linking works well under *unoptimized*
builds, but fails in *optimized* builds. The program launches
correctly both with and without SDL_mixer present when unoptimized.
However, as soon as I turn on optimization, the program crashes when
the SDL_mixer framework is not present. The optimized build continues
to work fine when the SDL_mixer framework *is* present.
Since I'm shipping an optimized version, weak linking in this case is
useless, because it provides no benefit over not weak linking. The
program simply crashes if SDL_mixer is not present, no matter if it
has been weak linked or not.
The crash seems to occur *before* any code in my application; it
crashes when trying to send an appDidFinishLaunching notification.
Here is a partial stack trace:
Thread 0 Crashed:
0 ??? 0000000000 0 + 0
1 de.descent2.d2x-xl 0x0008bda3 0x1000 + 568739
2 de.descent2.d2x-xl 0x0008f7ed 0x1000 + 583661
3 de.descent2.d2x-xl 0x0008fb9c 0x1000 + 584604
4 de.descent2.d2x-xl 0x00057fc3 0x1000 + 356291
5 com.apple.Foundation 0x90b53f1c _nsnote_callback + 364
6 com.apple.CoreFoundation 0x93ea38da __CFXNotificationPost
+ 362
7 com.apple.CoreFoundation 0x93ea3bb3
_CFXNotificationPostNotification + 179
8 com.apple.Foundation 0x90b51080 -[NSNotificationCenter
postNotificationName:object:userInfo:] + 128
9 com.apple.Foundation 0x90b5a8c8 -[NSNotificationCenter
postNotificationName:object:] + 56
10 com.apple.AppKit 0x91c8f49a -[NSApplication
_postDidFinishNotification] + 125
11 com.apple.AppKit 0x91c8f3a9 -[NSApplication
_sendFinishLaunchingNotification] + 77
12 com.apple.AppKit 0x91c08ec3 -
[NSApplication(NSAppleEventHandling) _handleAEOpen:] + 284
13 com.apple.AppKit 0x91c086bc -
[NSApplication(NSAppleEventHandling)
_handleCoreEvent:withReplyEvent:] + 98
14 com.apple.Foundation 0x90b7943f -[NSAppleEventManager
dispatchRawAppleEvent:withRawReply:handlerRefCon:] + 655
15 com.apple.Foundation 0x90b7914f
_NSAppleEventManagerGenericHandler + 223
16 com.apple.AE 0x916b1648
aeDispatchAppleEvent(AEDesc const*, AEDesc*, unsigned long, unsigned
char*) + 144
17 com.apple.AE 0x916b157e
dispatchEventAndSendReply(AEDesc const*, AEDesc*) + 44
The whole crash report can be found here: http://homepage.mac.com/simx/weak_linking_crash_log.txt
.
Anybody know what's going on here and how to solve it? The intarwebs
and the Googles don't seem to be providing anything relevant.
Thanks in advance for any assistance.
-- Simone
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