xcode 针对架构 i386 的 MacOSX 文件“/usr/lib/libSystem.B.dylib”构建的 dylib 链接

linking against dylib built for MacOSX file '/usr/lib/libSystem.B.dylib' for architecture i386

提问by Farhan Ahmad

I recently switched my development MacBook from a classic MacBook (32 bit) to a MacBook Air (64 bit). I am trying to open a project that was made on my old MacBook (32 bit) running XCode 4.

我最近将我的开发 MacBook 从经典 MacBook（32 位）切换到 MacBook Air（64 位）。我正在尝试打开一个在运行 XCode 4 的旧 MacBook（32 位）上制作的项目。

The project is a PhoneGap application made in PhoneGap 1.7.0.

该项目是在PhoneGap 1.7.0 中制作的PhoneGap 应用程序。

My new MacBook Air (64 bit) is running XCode 5.

我的新 MacBook Air（64 位）运行的是 XCode 5。

I imported my developer profiles from my old MacBook to my new MacBook Air. But when I try to run it, I get the following error message.

我将我的开发人员配置文件从我的旧 MacBook 导入到我的新 MacBook Air。但是当我尝试运行它时，我收到以下错误消息。

I have tried changing the my architecture in the build settings to armv7 but still no luck :(

我尝试将构建设置中的架构更改为 armv7，但仍然没有运气:(

Does anyone know why I'm getting this error and how to fix it?

有谁知道我为什么会收到这个错误以及如何解决它？

Thanks

谢谢

回答by Farhan Ahmad

OK so as it turns out, XCode 5 changes the default architecture to armv7 when my application does not support armv7. I am running Cordova 1.7.0 and that version does not have support for armv7 architecture.

好吧，事实证明，当我的应用程序不支持 armv7 时，XCode 5 将默认架构更改为 armv7。我正在运行 Cordova 1.7.0，该版本不支持 armv7 架构。

Fix architecture issue:

修复架构问题：

1. Removed ALLarchitectures from Build Settings--> Valid Architecture
2. Added armv6to Build Settings--> Valid Architecture

1. 从--> 中 删除了所有架构Build SettingsValid Architecture
2. 添加armv6到Build Settings-->Valid Architecture

Fix libSystem.B.dylibissue:

修复libSystem.B.dylib问题：

1. Removed /usr/lib/libSystem.B.dylibfrom Build Settings--> Linking--> Other Linker Flags

2. Also removed -weak_libraryfrom Build Settings--> Linking--> Other Linker Flags

3. /usr/lib/libSystem.B.dylib从Build Settings-->中移除Linking-->Other Linker Flags

4. 也-weak_library从Build Settings--> Linking--> 中删除Other Linker Flags

回答by such

Xcode 5 asks you to build your libraries for the simulator (1) and for iOS (2). You can then merge (3) these into a fat binary which you then link to your main project. I use the same flags as Xcode is using to build your main project (as seen in your screendump).

Xcode 5 要求您为模拟器 (1) 和 iOS (2) 构建库。然后，您可以将 (3) 这些合并到一个胖二进制文件中，然后将其链接到您的主项目。我使用与 Xcode 相同的标志来构建您的主项目（如您的屏幕转储所示）。

Expressed in common gnu toolchain variables I do:

用通用的 gnu 工具链变量表示，我这样做：

1. Building a library for the simulator

1. 为模拟器构建一个库

CC=clang
IPHONEOS_DEPLOYMENT_TARGET=7.0
PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:$PATH"
CFLAGS="-arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.0.sdk -mios-simulator-version-min=7.0"

2. Building a library for iOS

2.为iOS构建一个库

CC=clang
IPHONEOS_DEPLOYMENT_TARGET=7.0
PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:$PATH"
CFLAGS="-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk -miphoneos-version-min=7.0"

3. Merging to a fat binary

3. 合并为胖二进制

Choose either of .aor .dylibdepending on what you use:

选择.a或.dylib取决于您使用的内容：

lipo -create "your armv7 lib".a     "your simulator lib".a     -output "your lib".a
lipo -create "your armv7 lib".dylib "your simulator lib".dylib -output "your lib".dylib