iPhone 应用程序上的 Xcode 链接器错误（仅在模拟器上）
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Xcode linker error on iPhone app (Only on simulator)
提问by RexOnRoids
Im getting this linker error that won't let me compile. It only happens on the simulator.
我收到这个链接器错误，它不会让我编译。它只发生在模拟器上。
KEY POINTS:
- Happens only in simulator
- Similar to THIS question, but found no FRAMEWORK_SEARCH_PATHS in my .pbxproj file
- Though my OS is 10.6.2, I had to build target 1.5 to avoid other linker errors
- libxml2.dylib ISrequired and is in my Frameworks group
- The other cited libraries I have never heard of.
- Tried bringing in those other Libs under frameworks, didn't solve.
要点：
-只发生在模拟器
-以类似这个问题，却发现我的.pbxproj文件中没有FRAMEWORK_SEARCH_PATHS
-虽然我的操作系统是10.6.2，我必须建立目标1.5，以避免其他链接错误
- libxml2.dylib IS必需的，在我的框架组中
- 我从未听说过的其他引用库。
- 尝试在框架下引入其他 Libs，没有解决。
Build SpaceTweet of project SpaceTweet with configuration Debug
Ld build/Debug-iphonesimulator/SpaceTweet.app/SpaceTweet normal i386
cd "/Users/Scott/Desktop/iPhone Dev/SpaceTweet(Experimental)"
setenv MACOSX_DEPLOYMENT_TARGET 10.5
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/iPhoneSimulator3.1.3.sdk "-L/Users/Scott/Desktop/iPhone Dev/SpaceTweet(Experimental)/build/Debug-iphonesimulator" -L/Users/Scott/Desktop "-L/Users/Scott/Desktop/iPhone Dev/SpaceTweet(Experimental)/../../libYAJLIPhone-0" -L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/lib -L/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.3.sdk/usr/lib -L/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.0.sdk/usr/lib "-F/Users/Scott/Desktop/iPhone Dev/SpaceTweet(Experimental)/build/Debug-iphonesimulator" -filelist "/Users/Scott/Desktop/iPhone Dev/SpaceTweet(Experimental)/build/SpaceTweet.build/Debug-iphonesimulator/SpaceTweet.build/Objects-normal/i386/SpaceTweet.LinkFileList" -mmacosx-version-min=10.5 -framework Foundation -framework UIKit -framework CoreGraphics -framework AVFoundation -framework MessageUI -lYAJLIPhone -lxml2 -o "/Users/Scott/Desktop/iPhone Dev/SpaceTweet(Experimental)/build/Debug-iphonesimulator/SpaceTweet.app/SpaceTweet"
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/lib/libxml2.dylib, missing required architecture i386 in file
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/lib/libSystem.dylib, missing required architecture i386 in file
ld: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/lib/libobjc.A.dylib, missing required architecture i386 in file
collect2: ld returned 1 exit status
Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1
CLUE:
Again, MY question is very similar to THIS SOLVED QUESTIONexcept that in my case I did NOT find a FRAMEWORK_SEARCH_PATHS entry in the .pbxproj file in my project bundle and thus could not solve in the manner in which that question was solved.
线索：
同样，我的问题与这个已解决的问题非常相似，只是在我的情况下，我没有在我的项目包的 .pbxproj 文件中找到 FRAMEWORK_SEARCH_PATHS 条目，因此无法以解决该问题的方式解决。
回答by cdespinosa
The problem is this:
问题是这样的：
-L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/usr/lib
That's telling your Simulator (i386) build to use files from the Device (arm) /usr/lib.
这告诉您的模拟器 (i386) 构建使用来自设备 (arm) /usr/lib 的文件。
Find in your target where /usr/lib is (just use the Search bubble in the target's Get Info / Build Settings tab) and delete it. The compiler will use the correct platform's usr/lib if it's not told to use the wrong one first.
在您的目标中找到 /usr/lib 所在的位置（只需使用目标的“获取信息/构建设置”选项卡中的搜索气泡）并删除它。如果没有告诉编译器首先使用错误的 usr/lib，编译器将使用正确平台的 usr/lib。
回答by JasmineOT
I have the same issue. And it turns out to run my release version code on debug environment. Click "Edit schema..." and change Build Configuration to Release solved my problem.
我有同样的问题。结果是在调试环境中运行我的发布版本代码。单击“编辑架构...”并将构建配置更改为发布解决了我的问题。
回答by SpaceTrucker
I had the same thing happen to me. I deleted and re added all my frameworks and still had the same issue. To get rid of the error finally I had to delete the path pointing to the offending library from Library Search Paths under build settings.
我也发生了同样的事情。我删除并重新添加了我所有的框架，但仍然有同样的问题。为了最终摆脱错误，我不得不从构建设置下的库搜索路径中删除指向违规库的路径。
