ld: warning: directory not found for option，后面跟着一条很长的路径。
我按照Apple Mach-O Linker errors and I don't know what to do中的答案操作，但仍收到相同的警告。
编辑：以下是我收到的消息，如果相关的话：
Ld /Users/joel/Library/Developer/Xcode/DerivedData/GayHaikuTabbed-aszefnihmscxaachdbimtmeozapo/Build/Products/Debug-iphonesimulator/GayHaikuTabbed.app/GayHaikuTabbed normal i386
cd /Users/joel/Development/GayHaiku
setenv IPHONEOS_DEPLOYMENT_TARGET 6.0
setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk -L/Users/joel/Library/Developer/Xcode/DerivedData/GayHaikuTabbed-aszefnihmscxaachdbimtmeozapo/Build/Products/Debug-iphonesimulator -L/Users/joel/Development/GayHaiku/GayHaikuTabbed -L/Users/joel/Development/GayHaiku -F/Users/joel/Library/Developer/Xcode/DerivedData/GayHaikuTabbed-aszefnihmscxaachdbimtmeozapo/Build/Products/Debug-iphonesimulator -F. -FGayHaikuTabbed -FGayHaikuTabbedTests -F/Users/joel/Development/GayHaiku -F/Users/joel/Development/GayHaiku/../../../Downloads -F/Users/joel/Development/GayHaiku/../../Downloads -filelist /Users/joel/Library/Developer/Xcode/DerivedData/GayHaikuTabbed-aszefnihmscxaachdbimtmeozapo/Build/Intermediates/GayHaikuTabbed.build/Debug-iphonesimulator/GayHaikuTabbed.build/Objects-normal/i386/GayHaikuTabbed.LinkFileList -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -Xlinker -no_implicit_dylibs -mios-simulator-version-min=6.0 -framework Parse -framework Accounts -framework AdSupport -framework AudioToolbox -framework CFNetwork -framework CoreGraphics -framework CoreLocation -framework Foundation -framework Twitter -lsqlite3 -lz -lz.1.1.3 -framework MessageUI -framework MobileCoreServices -framework QuartzCore -framework Security -framework Social -framework StoreKit -framework SystemConfiguration -framework UIKit -o /Users/joel/Library/Developer/Xcode/DerivedData/GayHaikuTabbed-aszefnihmscxaachdbimtmeozapo/Build/Products/Debug-iphonesimulator/GayHaikuTabbed.app/GayHaikuTabbed
ld: warning: directory not found for option '-F/Users/joel/Development/GayHaiku/../../../Downloads'
编辑: 结果发现清理项目可以消除警告，但只有在我再次构建该项目之前，警告才会再次出现。我也尝试过删除派生数据，但没有任何效果。 :(
编辑: 好吧，库搜索路径和头搜索路径为空，但框架搜索路径设置中有几条路径。我想尝试删除它们，但我担心我会破坏其他东西，因为此时我已经超出了我真正知道任何事情的范围; 我只是按按钮并保持手指交叉。