我正在使用iOS 4.0 SDK运行Xcode 3.2.3.我使用Base SDK = iphoneos4.0,Active SDK = iphoneos4.0,Deployment Target = 3.1.3和Architecture = standard(arm6 arm7)构建了我的应用程序.编译器= GCC 4.2.据我了解,这是为iOS 4和3 构建应用程序的正确方法.
该应用程序在运行iOS 4的设备上运行良好.但是当您尝试在具有iOS 3.1.3(iPod Touch 1G)的设备上运行它时,它会在启动时崩溃:
dyld: Symbol not found: __NSConcreteStackBlock
Referenced from: /var/mobile/Applications/192B30ED-16AC-431E-B0E9-67C1F41FD5DA/MyApp.app/MyApp
Expected in: /usr/lib/libSystem.B.dylib
在我的main()函数被调用之前,它似乎是一个相当"低级"动态链接库的问题.我甚至尝试重新启动设备等,没有运气.这是崩溃日志的一部分:
Process: MyApp [60]
Path: /var/mobile/Applications/192B30ED-16AC-431E-B0E9-67C1F41FD5DA/MyApp.app/MyApp
Identifier: MyApp
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2010-07-22 17:16:17.942 -0400
OS Version: iPhone OS 3.1.3 (7E18)
Report Version: 104
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x00000001, 0xe7ffdefe
Crashed Thread: 0 …