我有空的 iOS 静态库（空的，意味着 - 我只定义了一个没有任何方法的接口），当我尝试构建它时，我得到一堆错误，例如：
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:74:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLCredential.h:120:25: error: expected a type
- (id)initWithIdentity:(SecIdentityRef)identity certificates:(NSArray *)certArray persistence:(NSURLCredentialPersistence) persistence NS_AVAILABLE(10_6, 3_0);
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLCredential.h:130:46: error: expected a type
+ (NSURLCredential *)credentialWithIdentity:(SecIdentityRef)identity certificates:(NSArray *)certArray persistence:(NSURLCredentialPersistence)persistence NS_AVAILABLE(10_6, 3_0);
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLCredential.h:137:4: error: expected a type
- (SecIdentityRef)identity;
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLCredential.h:155:22: error: expected a type
- (id)initWithTrust:(SecTrustRef)trust NS_AVAILABLE(10_6, 3_0);
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLCredential.h:162:42: error: expected a type
+ (NSURLCredential *)credentialForTrust:(SecTrustRef)trust NS_AVAILABLE(10_6, 3_0);
^
In file included from /Users/p-kir/Work/SourceRepos/iDev_GIT/Tests/AllTests/AllTests/AllTests-Prefix.pch:6:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:77:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLProtectionSpace.h:237:4: error: expected a type
- (SecTrustRef)serverTrust NS_AVAILABLE(10_6, 3_0);
有谁知道这可能是什么原因造成的？谢谢。