我刚把我的Xcode更新到了10.0版本(10A255)，并且它也在我MacBook上运行。之后，我使用了以下命令：
sudo ionic cordova build ios --emulator --prod
然后它开始正常构建，但是构建似乎永远不会结束，因为这个过程从来没有返回“构建失败”或“构建成功”。它显然突然结束，这是终端的输出：
Running app-scripts build: --prod --platform ios --target cordova
[16:09:56] build prod started ...
[16:09:56] clean started ...
[16:09:56] clean finished in 3 ms
[16:09:56] copy started ...
[16:09:57] deeplinks started ...
[16:09:58] deeplinks finished in 1.52 s
[16:09:58] ngc started ...
[16:10:27] ngc finished in 28.76 s
[16:10:27] preprocess started ...
[16:10:27] preprocess finished in less than 1 ms
[16:10:27] webpack started ...
[16:10:27] copy finished in 31.56 s
[16:14:50] webpack finished in 263.50 s
[16:14:50] uglify started ...
[16:14:50] sass started ...
Without `from` option PostCSS could generate wrong source map and will not find Browserslist config. Set it to CSS file path or to `undefined` to prevent this warning.
[16:14:53] sass finished in 2.58 s
[16:14:53] cleancss started ...
[16:14:57] cleancss finished in 3.72 s
[16:15:51] uglify finished in 60.77 s
[16:15:51] postprocess started ...
[16:15:51] postprocess finished in 190 ms
[16:15:51] lint started ...
[16:15:51] build prod finished in 355.49 s
> cordova build ios --emulator
Building for iPhone XS Max Simulator
Building project: /Users/usuariomac/WebServer/AppIonicOMT/platforms/ios/OpenMyTab.xcworkspace
Configuration: Debug
Platform: emulator
Build settings from command line:
CONFIGURATION_BUILD_DIR = /Users/usuariomac/WebServer/AppIonicOMT/platforms/ios/build/emulator
SDKROOT = iphonesimulator12.0
SHARED_PRECOMPS_DIR = /Users/usuariomac/WebServer/AppIonicOMT/platforms/ios/build/sharedpch
Build settings from configuration file '/Users/usuariomac/WebServer/AppIonicOMT/platforms/ios/cordova/build-debug.xcconfig':
CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES = YES
CODE_SIGN_ENTITLEMENTS = $(PROJECT_DIR)/$(PROJECT_NAME)/Entitlements-$(CONFIGURATION).plist
CODE_SIGN_IDENTITY = iPhone Developer
ENABLE_BITCODE = NO
GCC_PREPROCESSOR_DEFINITIONS = DEBUG=1
HEADER_SEARCH_PATHS = "$(TARGET_BUILD_DIR)/usr/local/lib/include" "$(OBJROOT)/UninstalledProducts/include" "$(OBJROOT)/UninstalledProducts/$(PLATFORM_NAME)/include" "$(BUILT_PRODUCTS_DIR)"
OTHER_LDFLAGS = -ObjC
SWIFT_OBJC_BRIDGING_HEADER = $(PROJECT_DIR)/$(PROJECT_NAME)/Bridging-Header.h
[16:16:41] lint finished in 49.36 s
在此之前，我的项目正常构建。我尝试使用以下命令将目标更改为先前的iOS版本：
ionic cordova build ios --emulator --target "iPhone-X, 11.0" --prod
但是它没有起作用。这个问题最奇怪的地方是，如果我从Xcode构建应用程序，它“显然”会接受我在应用程序中所做的更改。因此，这是我的ionic信息：cli包：（/usr/local/lib/node_modules）
@ionic/cli-utils : 1.19.2
ionic (Ionic CLI) : 3.20.0
全局包:
cordova (Cordova CLI) : 8.0.0
本地软件包：
@ionic/app-scripts : 3.1.11
Cordova Platforms : android 6.3.0 ios 4.5.5
Ionic Framework : ionic-angular 3.9.2
系统：
Android SDK Tools : 26.1.1
ios-deploy : 1.9.2
ios-sim : 5.0.13
Node : v8.6.0
npm : 6.4.1
OS : macOS High Sierra
Xcode : Xcode 10.0 Build version 10A255
环境变量：
ANDROID_HOME : /Users/usuariomac/Library/Android/sdk
杂项：
backend : pro
有任何想法发生了什么吗？ 提前感谢！
ionic cordova build ios -- --buildFlag="-UseModernBuildSystem=0"。请注意，这个命令是为了使用旧版构建系统。 - Sudarshana Dayananda