我从https://github.com/robbiehanson/CocoaLumberjack下载了最新的源代码,在我的项目中包含了所需的文件,进行了必要的代码更改,并且得到了下面的运行时链接器错误.

环境是Xcode 4.2 Build 4C199,项目Target设置为Device = iPad,DeploymentTarget = 4.3.该项目最初是使用retain / release编写的,所以我按原样保留了原始源代码,为我正在使用的Lumberjack文件添加了编译器标志“-fobjc-arc”：DDFileLogger.m,DDLog.m和DDTTYLogger.m .

控制台输出是：

GNU gdb 6.3.50-20050815 (Apple version gdb-1708) (Fri Sep 16 06:56:50 UTC 2011)
Copyright 2004 Free Software Foundation,Inc.
GDB is free software,covered by the GNU General Public License,and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "--host=i386-apple-darwin --target=arm-apple-darwin".tty /dev/ttys001
sharedlibrary apply-load-rules all
target remote-mobile /tmp/.XcodeGDBRemote-10996-56
Switching to remote-macosx protocol
mem 0x1000 0x3fffffff cache
mem 0x40000000 0xffffffff none
mem 0x00000000 0x0fff none
[Switching to process 11779 thread 0x2e03]
[Switching to process 11779 thread 0x2e03]
dyld: lazy symbol binding Failed: Symbol not found: _objc_storeStrong
  Referenced from: /var/mobile/Applications/32E4EEB9-765E-4C72-83C8-F5707253AA99/Demo.app/Demo
  Expected in: /usr/lib/libobjc.A.dylib

dyld: Symbol not found: _objc_storeStrong
  Referenced from: /var/mobile/Applications/32E4EEB9-765E-4C72-83C8-F5707253AA99/Demo.app/Demo
  Expected in: /usr/lib/libobjc.A.dylib

warning: Attempting to create USE_BLOCK_IN_FRAME variable with block that isn't in the frame.
(gdb)

我的项目按如下方式初始化环境,其中fileLogger是在相应的AppDelegate.h文件中定义的实例变量：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    /*
     * Configure the Lumberjack logging framework (we'll use it instead of NSLog)
     */

    // the TTY logger is the Xcode console
    [DDLog addLogger:[DDTTYLogger sharedInstance]];

    // we'll also use a file logger
    fileLogger = [[DDFileLogger alloc] init];
    fileLogger.rollingFrequency = 60 * 60 * 24; // 24 hour rolling
    fileLogger.logFileManager.maximumNumberOfLogFiles = 7;
    [DDLog addLogger:fileLogger];


    // Override point for customization after application launch.
    DDLogInfo(@"didFinishLaunchingWithOptions: entered");

    // create instance of the view controller
    MainViewController *aViewController = [[MainViewController alloc]
                                           initWithNibName:@"MainView" bundle:nil];
    self.mainViewController = aViewController;  // same as: [self setMainViewController:aViewController];
    [aViewController release];

    // Add the main view controller's view to the window and display.
    self.window.rootViewController = self.mainViewController;

    [self.window makeKeyAndVisible];
    return YES;
}

有没有人遇到过这个问题,并且知道解决方案或解决方法？我正在做什么甚至可能……在项目中混合使用ARC和非ARC文件？