Undefined symbols for architecture i386: error in iphone
<p>I am doing a reader application,which can sync text to googledoc,i got the working sample code of text sync to googledoc,but i put all the code to my project except delegate code,i got this error,</p>

<pre><code>Ld /Users/admin/Library/Developer/Xcode/DerivedData/ELTouchBible-eqhoridwhfpkcvddemynmhjrvyor/Build/Products/Release-iphonesimulator/Bible.app/Bible normal i386
    cd "/Users/admin/Desktop/bible day updates/ELTouchBiblelatest3 doingggg copy 11"
    setenv MACOSX_DEPLOYMENT_TARGET 10.6
    setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk -L/Users/admin/Library/Developer/Xcode/DerivedData/ELTouchBible-eqhoridwhfpkcvddemynmhjrvyor/Build/Products/Release-iphonesimulator "-L/Users/admin/Desktop/bible day updates/ELTouchBiblelatest3 doingggg copy 11/Classes" -F/Users/admin/Library/Developer/Xcode/DerivedData/ELTouchBible-eqhoridwhfpkcvddemynmhjrvyor/Build/Products/Release-iphonesimulator -filelist /Users/admin/Library/Developer/Xcode/DerivedData/ELTouchBible-eqhoridwhfpkcvddemynmhjrvyor/Build/Intermediates/ELTouchBible.build/Release-iphonesimulator/Bible.build/Objects-normal/i386/Bible.LinkFileList -mmacosx-version-min=10.6 -Xlinker -objc_abi_version -Xlinker 2 -framework Foundation -framework UIKit -lxml2 -lsqlite3.0 -framework CoreData -framework CoreGraphics -framework MessageUI -framework QuartzCore -lOAuth -o /Users/admin/Library/Developer/Xcode/DerivedData/ELTouchBible-eqhoridwhfpkcvddemynmhjrvyor/Build/Products/Release-iphonesimulator/Bible.app/Bible

Undefined symbols for architecture i386:
  "_DebugLog", referenced from:
      -[NSData(IdleLoop) dataDecodeFromHtml] in IdleLoop.o
      -[NSData(IdleLoop) dataEncodeToHtml] in IdleLoop.o
      -[GoogleDocs fRetryCachedQuery] in GoogleDocs.o
      -[GoogleDocs retitleNextFile] in GoogleDocs.o
      -[GoogleDocs downloadEntry:] in GoogleDocs.o
      -[GoogleDocs uploadFileTicket:failedWithError:] in GoogleDocs.o
      -[GoogleDocs uploadFileTicket:finishedWithEntry:] in GoogleDocs.o
      ...
  "_Assert", referenced from:
      -[NSData(IdleLoop) dataEncodeToHtml] in IdleLoop.o
      -[GoogleDocs sendFailureNotice:code:] in GoogleDocs.o
      -[GoogleDocs docListListFetchTicket:failedWithError:] in GoogleDocs.o
      -[GoogleDocs beginFolderCheck:createIfNeeded:] in GoogleDocs.o
      -[GoogleDocs beginFileDeleteTitle:inFolder:keepingNewest:] in GoogleDocs.o
      -[GoogleDocs beginFileRetitleFrom:toTitle:inFolder:] in GoogleDocs.o
      -[GoogleDocs beginDownloadTitle:inFolder:] in GoogleDocs.o
      ...
     (maybe you meant: _AssertSelectorNilOrImplementedWithArguments)
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status
</code></pre>

<p>but the sample projects works well in xcode 4,i am using xcode4.How to solve this error.please help me to do this.
Thanks in advance.</p>
