问题
I just installed Xcode 8.2 and attempted to run the Swift REPL. I'm running into the following warnings. How do I resolve? Note that this is on a brand new MBP with Sierra. Xcode is one of a very few applications that are currently installed aside from the standard set.
Welcome to Apple Swift version 3.0.2 (swiftlang-800.0.63 clang-800.0.42.1). Type :help for assistance.
warning: Swift error in module repl_swift.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module dyld.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libz.1.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libedit.3.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libpanel.5.4.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libncurses.5.4.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module Foundation.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libSystem.B.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libDiagnosticMessagesClient.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libicucore.A.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libauto.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module DiskArbitration.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libarchive.2.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libxml2.2.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CFNetwork.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module SystemConfiguration.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CoreServices.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module liblangid.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module IOKit.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libCRFSuite.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libc++abi.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libc++.1.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcache.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcommonCrypto.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcompiler_rt.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcopyfile.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcorecrypto.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libdispatch.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libdyld.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libkeymgr.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module liblaunch.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libmacho.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libquarantine.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libremovefile.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_asl.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_blocks.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_c.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_configuration.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_coreservices.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_coretls.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_dnssd.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_info.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_kernel.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_m.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_malloc.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_network.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_networkextension.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_notify.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_platform.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_pthread.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_sandbox.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_secinit.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_symptoms.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsystem_trace.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libunwind.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libxpc.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module Security.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libbz2.1.0.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module liblzma.5.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libbsm.0.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libnetwork.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module FSEvents.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CarbonCore.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module Metadata.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module OSServices.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module SearchKit.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module AE.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module LaunchServices.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module DictionaryServices.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module SharedFileList.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libenergytrace.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libkxld.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcoretls.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcoretls_cfhelpers.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libxar.1.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libpam.2.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libOpenScriptingUtil.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libpcap.A.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module NetFS.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module TCC.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libmecabra.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CFOpenDirectory.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module ServiceManagement.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libmarisa.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module LanguageModeling.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libxslt.1.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module NetAuth.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module ApplicationServices.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libChineseTokenizer.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcmph.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libiconv.2.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CoreEmoji.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module loginsupport.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CoreText.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module ATS.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module ColorSync.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module HIServices.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module LangAnalysis.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module PrintCore.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module QD.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module SpeechSynthesis.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libFontParser.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libFontRegistry.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module AppleJPEG.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module IOSurface.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module MultitouchSupport.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcups.2.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CoreAudio.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module AudioToolbox.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module Kerberos.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module GSS.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libresolv.9.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libQuadrature.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module Heimdal.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module OpenDirectory.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libheimdal-asn1.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CommonAuth.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module SecurityFoundation.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CoreFoundation.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libobjc.A.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libswiftCore.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libswiftDarwin.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libsqlite3.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CoreGraphics.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module ImageIO.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module Accelerate.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module vImage.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module vecLib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libvDSP.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libBNNS.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libvMisc.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libLAPACK.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libBLAS.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libLinearAlgebra.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libSparseBLAS.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libJPEG.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libTIFF.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libPng.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libGIF.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libJP2.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libRadiance.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module libcompression.dylib.
Debug info from this module will be unavailable in the debugger.
warning: Swift error in module CoreData.
Debug info from this module will be unavailable in the debugger.
回答1:
Go to Xcode - Preferences.
Check if Command Line Tools is set.
来源：https://stackoverflow.com/questions/41204362/cannot-run-swift-repl-without-it-barfing-a-bunch-of-dylib-warnings