升级到 Xcode 12 后构建速度极慢

Question

升级到 Xcode 12 后，当目标为真机时，构建进度将持续约 10 分钟。 但是在 Xcode 11 中使用相同的项目和相同的设备只需要不到 1 分钟。

当我检查构建日志时，我发现签名进度花费了很多时间

Showing All Messages sent 187539 bytes received 70 bytes 375218.00 bytes/sec

总大小为 188006 加速为 1.00

代码签名/Users/cc/Library/Developer/Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MarkDaily.app/Frameworks/LCNetwork.framework with Identity -

/usr/bin/codesign --force --sign - --preserve-metadata=identifier,entitlements '/Users/cc/Library/Developer/Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MarkDaily.应用程序/框架/LCNetwork.framework'

/Users/cc/Library/Developer/Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MarkDaily.app/Frameworks/LCNetwork.framework：替换现有签名

rsync --delete -av --filter P .*.?????? --links --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "/Users/cc/Library/Developer/Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MBProgressHUD/MBProgressHUD.framework" "/Users/cc/Library/Developer /Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MarkDaily.app/Frameworks”

构建文件列表...完成

MBProgressHUD.framework/

MBProgressHUD.framework/MBProgressHUD

MBProgressHUD.framework/_CodeSignature/CodeResources

发送 173429 字节 接收 70 字节 346998.00 字节/秒

总大小为 173884 加速为 1.00

代码签名/Users/cc/Library/Developer/Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MarkDaily.app/Frameworks/MBProgressHUD.framework with Identity -

/usr/bin/codesign --force --sign - --preserve-metadata=identifier,entitlements '/Users/cc/Library/Developer/Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MarkDaily.应用程序/框架/MBProgressHUD.framework'

/Users/cc/Library/Developer/Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MarkDaily.app/Frameworks/MBProgressHUD.framework：替换现有签名

rsync --delete -av --filter P .*.?????? --links --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "/Users/cc/Library/Developer/Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MJRefresh/MJRefresh.framework" "/Users/cc/Library/Developer /Xcode/DerivedData/MarkDaily-abnizdojrgeyrjayljkajexbcxcn/Build/Products/Debug-iphonesimulator/MarkDaily.app/Frameworks”

构建文件列表...完成

MJRefresh.framework/

MJRefresh.framework/MJRefresh

MJRefresh.framework/_CodeSignature/CodeResources

Answer 1

我发现日志中有“更换标志”。 所以它可能是由重复的符号引起的。

然后删除Pods目录并通过pod install重新安装所有 Pod。 然后构建速度正常。