title: Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang failed
body: <p>I got this error message below:</p>
  
  <pre><code>Ld /Users/kIT98K/Library/Developer/Xcode/DerivedData/iFly-cijrdcwdnrwowmgcazhvczqzkctd/Build/Products/Debug-iphonesimulator/iFly.app/iFly normal i386
      cd /Users/kIT98K/proooo2/VPN38/iFly
      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/clang -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -L/Users/kIT98K/Library/Developer/Xcode/DerivedData/iFly-cijrdcwdnrwowmgcazhvczqzkctd/Build/Products/Debug-iphonesimulator -F/Users/kIT98K/Library/Developer/Xcode/DerivedData/iFly-cijrdcwdnrwowmgcazhvczqzkctd/Build/Products/Debug-iphonesimulator -filelist /Users/kIT98K/Library/Developer/Xcode/DerivedData/iFly-cijrdcwdnrwowmgcazhvczqzkctd/Build/Intermediates/iFly.build/Debug-iphonesimulator/iFly.build/Objects-normal/i386/iFly.LinkFileList -mmacosx-version-min=10.6 -Xlinker -objc_abi_version -Xlinker 2 -ObjC -lxml2 -Xlinker -no_implicit_dylibs -D__IPHONE_OS_VERSION_MIN_REQUIRED=40300 -lxml2 -framework Security -framework MobileCoreServices -framework SystemConfiguration -framework CFNetwork -framework UIKit -framework Foundation -framework CoreGraphics /Users/kIT98K/Library/Developer/Xcode/DerivedData/iFly-cijrdcwdnrwowmgcazhvczqzkctd/Build/Products/Debug-iphonesimulator/RestKit/RestKit /Users/kIT98K/Library/Developer/Xcode/DerivedData/iFly-cijrdcwdnrwowmgcazhvczqzkctd/Build/Products/Debug-iphonesimulator/libRestKit.a -o /Users/kIT98K/Library/Developer/Xcode/DerivedData/iFly-cijrdcwdnrwowmgcazhvczqzkctd/Build/Products/Debug-iphonesimulator/iFly.app/iFly
  
  Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang failed with exit code 1
  </code></pre>
  
  <p>I try to use xcodebuild -target to build for more info,</p>
  
  <pre><code>Ld build/Release-iphoneos/iFly.app/iFly normal armv7
      cd /Users/kIT98K/proooo2/VPN38/iFly
      setenv IPHONEOS_DEPLOYMENT_TARGET 4.3
      setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin:/usr/X11/bin"
      /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/clang -arch armv7 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk -L/Users/kIT98K/proooo2/VPN38/iFly/build/Release-iphoneos -F/Users/kIT98K/proooo2/VPN38/iFly/build/Release-iphoneos -filelist /Users/kIT98K/proooo2/VPN38/iFly/build/iFly.build/Release-iphoneos/iFly.build/Objects-normal/armv7/iFly.LinkFileList -dead_strip -ObjC -lxml2 -miphoneos-version-min=4.3 -lxml2 -framework Security -framework MobileCoreServices -framework SystemConfiguration -framework CFNetwork -framework UIKit -framework Foundation -framework CoreGraphics /Users/kIT98K/proooo2/VPN38/iFly/RestKit/build/Release/RestKit.framework/RestKit /Users/kIT98K/proooo2/VPN38/iFly/RestKit/build/Release-iphoneos/libRestKit.a -o /Users/kIT98K/proooo2/VPN38/iFly/build/Release-iphoneos/iFly.app/iFly
  Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/clang failed with exit code 1
  
  
  ** BUILD FAILED **
  
  
  The following build commands failed:
      Ld build/Release-iphoneos/iFly.app/iFly normal armv7
  (1 failure)
  </code></pre>
  
  <p>Please help, been on this for a week searching everywhere before this message. 
  thanks.</p>