对于我的所有目标，总以某种方式“始终嵌入Swift标准库”是。可能是由于Swift 1到5的历史发展。我现在正在使用Xcode 10.2，升级了目标，而我的“ Swift语言版本”都是5。
出于兴趣，我使用Xcode 10.2创建了一个空的新项目，并使用“始终嵌入Swift标准库”将其创建为Debug和Release版本的NO。
我有一种感觉，即使我保持原样，Apple还是会剥离标准Swift库，作为iOS 12.2+变薄的一部分吗？
那么自Swift 5以来正确的默认设置是什么？保持为“是”或更改为“否”有什么好处？
[更新]感谢Cœur的评论。看起来好像其中一个CocoaPods版本做到了。项目设置为否，但是使用CocoadPods的所有目标均为是。
我已升级到Xcode 7,突然我的目标之一无法构建"宏名称必须是标识符"消息.这个目标的调试配置构建得很好,我可以在设备上运行它,但是不会构建发布配置.
该错误指向目标的.pch文件,但是同样的.pch文件对许多其他目标(包括那些已发布的目标)构建正常.
这是错误消息:
ProcessPCH /Users/stanislavdvoychenko/Library/Developer/Xcode/DerivedData/speedo-gagyicfwqpzsudcvwgxjqhwbgpte/Build/Intermediates/PrecompiledHeaders/speedometer-Prefix-copscroeimdxfkdvcsfifjmzires/speedometer-Prefix.pch.pch speedometer/speedometer-Prefix.pch normal armv7 c com.apple.compilers.llvm.clang.1_0.compiler
cd /Users/stanislavdvoychenko/Documents/code/speedo
export LANG=en_US.US-ASCII
export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -x c-header -arch armv7 -fmessage-length=0 -fdiagnostics-show-note-include-stack -fmacro-backtrace-limit=0 -std=gnu99 -gmodules -Wno-trigraphs -fpascal-strings -Os -fno-common -Wno-missing-field-initializers -Wno-missing-prototypes -Wunreachable-code -Wno-missing-braces -Wparentheses -Wswitch -Wunused-function -Wno-unused-label -Wno-unused-parameter -Wunused-variable -Wunused-value -Wempty-body -Wuninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wconstant-conversion -Wint-conversion -Wbool-conversion -Wenum-conversion -Wshorten-64-to-32 -Wpointer-sign -Wno-newline-eof -DCOCOAPODS=1 -DCOCOAPODS=1 -DTAXI -D=1 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.0.sdk -fstrict-aliasing -Wdeprecated-declarations -miphoneos-version-min=7.0 -g -fvisibility=hidden -Wno-sign-conversion -I/Users/stanislavdvoychenko/Library/Developer/Xcode/DerivedData/speedo-gagyicfwqpzsudcvwgxjqhwbgpte/Build/Intermediates/speedo.build/Release-iphoneos/taximeter.build/taximeter.hmap -I/Users/stanislavdvoychenko/Library/Developer/Xcode/DerivedData/speedo-gagyicfwqpzsudcvwgxjqhwbgpte/Build/Products/Release-iphoneos/include -I/Users/stanislavdvoychenko/Documents/code/speedo/Pods/Headers/Public -I/Users/stanislavdvoychenko/Documents/code/speedo/Pods/Headers/Public/GoogleMaps -I/Users/stanislavdvoychenko/Library/Developer/Xcode/DerivedData/speedo-gagyicfwqpzsudcvwgxjqhwbgpte/Build/Intermediates/speedo.build/Release-iphoneos/taximeter.build/DerivedSources/armv7 -I/Users/stanislavdvoychenko/Library/Developer/Xcode/DerivedData/speedo-gagyicfwqpzsudcvwgxjqhwbgpte/Build/Intermediates/speedo.build/Release-iphoneos/taximeter.build/DerivedSources -F/Users/stanislavdvoychenko/Library/Developer/Xcode/DerivedData/speedo-gagyicfwqpzsudcvwgxjqhwbgpte/Build/Products/Release-iphoneos -F/Users/stanislavdvoychenko/Documents/code/speedo/Pods/GoogleMaps/Frameworks -F/Users/stanislavdvoychenko/Documents/code/speedo -DNS_BLOCK_ASSERTIONS=1 -isystem /Users/stanislavdvoychenko/Documents/code/speedo/Pods/Headers/Public -isystem …