ios - CocoaLumberjack 错误 : Symbol not found: _objc_storeStrong

我对 iOS 开发比较陌生，正在尝试实现 CocoaLumberjack 日志记录。

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，并且出现了下面的运行时链接器错误。

环境为 Xcode 4.2 Build 4C199，项目 Target 设置为 Device=iPad 和 DeploymentTarget=4.3。该项目最初是使用保留/发布编写的，所以我保留了原始源代码，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)

我的项目初​​始化环境如下，其中fileLogger是对应的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，并知道解决方案或解决方法？我在做什么甚至可能......在一个项目中混合了 ARC 和非 ARC 文件？

最佳答案

为了将来引用，这似乎是当前 Xcode 工具链的一个缺点，当当前构建的目标关闭 ARC 支持(并使用启用 ARC 的静态库)时，它似乎忘记包含 ARC 库。您可以使用 -fobjc-arc 标志轻松强制链接器包含库，请参阅此 related question 以获取完整说明。

关于ios - CocoaLumberjack 错误 : Symbol not found: _objc_storeStrong，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/8101296/