platform :ios, '7.0' pod 'CocoaAsyncSocket', '~> 7.3.5' pod 'MRProgress' pod 'InAppSettingsKit', '~> 2.1' pod 'VTAcknowledgementsViewController' pod 'XbICalendar', :podspec => 'https://raw.githubusercontent.com/libical/XbICalendar/master/XbICalendar.podspec' pod 'MYBlurIntroductionView'
构建的第一步就是安装这些依赖。在安装了 CocoaPods 之后，我根据官方文档运行了 pod install，但是出现了问题：
$ pod install Analyzing dependencies Fetching podspec for `XbICalendar` from `https://raw.githubusercontent.com/libical/XbICalendar/master/XbICalendar.podspec` Downloading dependencies Installing CocoaAsyncSocket (7.3.5) Installing InAppSettingsKit (2.15) Installing MRProgress (0.8.3) Installing MYBlurIntroductionView (1.0.3) Installing VTAcknowledgementsViewController (1.5.2) Installing XbICalendar (0.3.3) Generating Pods project Integrating client projects [!] Could not automatically select an Xcode workspace. Specify one in your Podfile like so:
workspace 'path/to/Workspace.xcworkspace'
[!] The abstract target Pods is not inherited by a concrete target, so the following dependencies won't make it into any targets in your project: - CocoaAsyncSocket (~> 7.3.5) - InAppSettingsKit (~> 2.1) - MRProgress - MYBlurIntroductionView - VTAcknowledgementsViewController - XbICalendar (from `https://raw.githubusercontent.com/libical/XbICalendar/master/XbICalendar.podspec`)
[!] The platform of the target `Pods` (iOS 7.0) may not be compatible with `InAppSettingsKit (2.15)` which has a minimum requirement of iOS 8.0.
[!] The platform of the target `Pods` (iOS 7.0) may not be compatible with `VTAcknowledgementsViewController (1.5.2)` which has a minimum requirement of iOS 8.0 - tvOS 9.0.
看起来有一些 bug 要修了 😃
修复 Bug
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[!] Could not automatically select an Xcode workspace. Specify one in your Podfile like so:
[!] The platform of the target `Pods` (iOS 7.0) may not be compatible with `InAppSettingsKit (2.15)` which has a minimum requirement of iOS 8.0.
[!] The platform of the target `Pods` (iOS 7.0) may not be compatible with `VTAcknowledgementsViewController (1.5.2)` which has a minimum requirement of iOS 8.0 - tvOS 9.0.
[!] The abstract target Pods is not inherited by a concrete target, so the following dependencies won't make it into any targets in your project: ...
这个消息则说明 pods(对应依赖的概念) 没有指定目标项目。根据 CocoaPod 的文档，我应当添加 target "kdeconnect-ios" 并把所有的 pods 放在一个 do ... end 结构中。
最终版本 Podfile
最终，Podfile 文件变成了：
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workspace 'kdeconnect-ios' target "kdeconnect-ios" do
platform :ios, '12.0' pod 'CocoaAsyncSocket', '~> 7.3.5' pod 'MRProgress' pod 'InAppSettingsKit', '~> 2.1' pod 'VTAcknowledgementsViewController' pod 'XbICalendar', :podspec => 'https://raw.githubusercontent.com/libical/XbICalendar/master/XbICalendar.podspec' pod 'MYBlurIntroductionView'
end
修复过后，输出正常了起来：
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$ pod install Analyzing dependencies Downloading dependencies Generating Pods project Integrating client project Pod installation complete! There are 6 dependencies from the Podfile and 6 total pods installed.
使用 XCode 构建
既然安装依赖部分已经没有问题了，使用 XCode 编译构建它就变得顺理成章了（虽然 XCode 是世界最差 IDE 没有之一）。
应用程序标识符
第一个问题出现在我点击 Build 按钮的时候：
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Failed to register bundle identifier. The app identifier "application-identifier" cannot be registered to your development team. Change your bundle identifier to a unique string to try again.
Apple 试图为我的 Apple 帐号和这个应用程序生成一个自签名证书。但它没法处理现在这个格式的标识符。
Multiple commands produce '/Users/inoki/Library/Developer/Xcode/DerivedData/kdeconnect-ios-hhcvmcgjatxxdugxbjbrwgotfgna/Build/Products/Debug-iphoneos/kdeconnect-ios.app/zh-Hans.lproj/Localizable.strings': 1) Target 'kdeconnect-ios' (project 'kdeconnect-ios') has copy command from '/Users/inoki/Projects/kdeconnect-ios-test/kdeconnect-ios/zh-Hans.lproj/Localizable.strings' to '/Users/inoki/Library/Developer/Xcode/DerivedData/kdeconnect-ios-hhcvmcgjatxxdugxbjbrwgotfgna/Build/Products/Debug-iphoneos/kdeconnect-ios.app/zh-Hans.lproj/Localizable.strings' 2) Target 'kdeconnect-ios' (project 'kdeconnect-ios') has copy command from '/Users/inoki/Projects/kdeconnect-ios-test/kdeconnect-ios/zh-Hans.lproj/Localizable.strings' to '/Users/inoki/Library/Developer/Xcode/DerivedData/kdeconnect-ios-hhcvmcgjatxxdugxbjbrwgotfgna/Build/Products/Debug-iphoneos/kdeconnect-ios.app/zh-Hans.lproj/Localizable.strings'
kdeconnect-ios/AppSettingViewController.m:27:9: 'IASKPSTitleValueSpecifierViewCell.h' file not found
这个问题可能是某个依赖版本升级导致的，直接移除这行：
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#import "IASKPSTitleValueSpecifierViewCell.h"
库链接错误，禁用 Bitcode
之后，我再次重新构建，又一个问题出现了：
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ld: '/Users/inoki/Projects/kdeconnect-ios-test/Pods/XbICalendar/libical/lib/libical.a(icalcomponent.c.o)' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target. for architecture arm64
Bitcode 可能是一个新的特性，但目前来说我想尽快将 KDE Connect iOS 构建起来。因此我在 Build Settings->Build Options 中禁用了它：
链接 WebKit 库
另一个问题是与 WebKit 有关的：
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Undefined symbols for architecture arm64: "_OBJC_CLASS_$_WKWebView"
看起来是因为 WebKit 框架没有被加入到项目中。所以，可以在 Build Phases->Link Binary with Libraries 将其加入：
