ios - 添加 Realm Cocoapod 时重复符号

我第一次尝试在实际项目中使用 Realm，我已经通过 Cocoapods 成功添加了它。我使用的是 Xcode 6.4，但在同一台机器上安装了 Xcode 7.1 测试版(用于其他项目)。

在尝试构建项目或运行单元测试(在模拟器上)时，我收到一个链接器错误，提示有数十对文件重复。看起来一个提到了 Bitcode，一个没有。

我使用的是 Xcode 6.4 – 为什么它甚至知道 Bitcode？以下是一小部分错误示例:

duplicate symbol _llvm.cmdline in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(row-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.embedded.module in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(row-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.cmdline in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(spec-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.embedded.module in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(spec-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.cmdline in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(table-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.embedded.module in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(table-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.cmdline in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(table_view-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.embedded.module in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(table_view-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.cmdline in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(unicode-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.embedded.module in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(unicode-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.cmdline in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(utilities-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.embedded.module in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(utilities-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.cmdline in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(version-iPhoneSimulator-bitcode.o)
duplicate symbol _llvm.embedded.module in:
    /Users/me/Source/our-project-ios/Pods/Realm/core/librealm-ios.a(bptree-iPhoneSimulator-bitcode.o)

我见过其他人谈论类似的问题，但不是 Xcode 6.4，也不是简单地运行应用程序，而不是提交到商店。

我还应该指出，将 Realm 添加为静态框架(来自 0.95.3 的 xcode-6 文件夹可以完美运行，因此它与看来我是从 Cocoapods 获得的。

我可以在这里做什么？如果可能的话，我真的宁愿从 Cocoapods 获得它。

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Best Answer-推荐答案

根据您使用的 Xcode 版本，需要不同版本的 Realm 核心库，因此在运行 时使用 xcode-select 激活相同版本很重要pod install 用于构建项目。由于下载了 Xcode 7 版本的库，您可能已经激活了该版本的 Xcode。运行 sudo xcode-select -s/Applications/Xcode.app/Contents/Developer(假设您安装了 Xcode 6；根据需要进行调整)，删除 Pods 目录，然后重新运行 pod install。

您可以使用 xcrun swiftc -v 检查您激活的 Xcode 版本。

关于ios - 添加 Realm Cocoapod 时重复符号，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33125781/