xcode4 – XCode 4.3 – 构建错误“缺少必需的架构armv7”

ld: warning: ignoring file    /Applications/Xcode.app/Contents/Developer/Library/Frameworks/SenTestingKit.framework/SenTestingKit,missing required architecture armv7 in file
Undefined symbols for architecture armv7:
  "_STComposeString",referenced from:
      -[NSMutableuRLRequest_ParametersTest verifyDefaultParametersForRequest:] in NSMutableuRLRequest+ParametersTest.o
      -[NSMutableuRLRequest_ParametersTest verifyModifiedParametersForRequest:] in NSMutableuRLRequest+ParametersTest.o
      -[NSMutableuRLRequest_ParametersTest verifyEmptyParametersForRequest:] in NSMutableuRLRequest+ParametersTest.o
      -[Nsstring_URLEncodingTest testURLEncodedString] in Nsstring+URLEncodingTest.o
      -[NSURL_BaseTest testURLStringWithoutQuery] in NSURL+BaseTest.o
      -[OAHMAC_SHA1SignatureProviderTest testSignClearText] in OAHMAC_SHA1SignatureProviderTest.o
      -[OAMutableuRLRequestTest testGenerateNonce] in OAMutableuRLRequestTest.o
      ...
  "_OBJC_CLASS_$_SenTestCase",referenced from:
      _OBJC_CLASS_$_NSMutableuRLRequest_ParametersTest in NSMutableuRLRequest+ParametersTest.o
      _OBJC_CLASS_$_Nsstring_URLEncodingTest in Nsstring+URLEncodingTest.o
      _OBJC_CLASS_$_NSURL_BaseTest in NSURL+BaseTest.o
      _OBJC_CLASS_$_OAHMAC_SHA1SignatureProviderTest in OAHMAC_SHA1SignatureProviderTest.o
      _OBJC_CLASS_$_OAMutableuRLRequestTest in OAMutableuRLRequestTest.o
      _OBJC_CLASS_$_OAPlaintextSignatureProviderTest in OAPlaintextSignatureProviderTest.o
      _OBJC_CLASS_$_OARequestParameterTest in OARequestParameterTest.o
      ...
  "_OBJC_MetaCLASS_$_SenTestCase",referenced from:
      _OBJC_MetaCLASS_$_NSMutableuRLRequest_ParametersTest in NSMutableuRLRequest+ParametersTest.o
      _OBJC_MetaCLASS_$_Nsstring_URLEncodingTest in Nsstring+URLEncodingTest.o
      _OBJC_MetaCLASS_$_NSURL_BaseTest in NSURL+BaseTest.o
      _OBJC_MetaCLASS_$_OAHMAC_SHA1SignatureProviderTest in OAHMAC_SHA1SignatureProviderTest.o
      _OBJC_MetaCLASS_$_OAMutableuRLRequestTest in OAMutableuRLRequestTest.o
      _OBJC_MetaCLASS_$_OAPlaintextSignatureProviderTest in OAPlaintextSignatureProviderTest.o
      _OBJC_MetaCLASS_$_OARequestParameterTest in OARequestParameterTest.o
      ...
ld: symbol(s) not found for architecture armv7
clang: error: linker command Failed with exit code 1 (use -v to see invocation)