我想在项目中使用 SDL，所以我创建了一个 Cocoa 项目并添加了所有需要的框架，但 XCode 告诉我：
ProcessPCH /Users/aurelien/Library/Developer/Xcode/DerivedData/projetCS2-gdnozsjskcozmxcvmlmmpsmmkcvk/Build/Intermediates/PrecompiledHeaders/projetCS2-Prefix-auneaovyjutgotajcmkllwxdblci/projetCS2-Prefix.pch.pth projetCS2/projetCS2-Prefix.pch normal i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler
cd /Users/aurelien/Documents/Programmation/projetC-S2/projetCS2
setenv LANG en_US.US-ASCII
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -x objective-c-header -arch i386 -fmessage-length=0 -std=gnu99 -fobjc-arc -Wno-trigraphs -fpascal-strings -O0 -Wno-missing-field-initializers -Wno-missing-prototypes -Wreturn-type -Wno-implicit-atomic-properties -Wformat -Wno-missing-braces -Wparentheses -Wswitch -Wno-unused-function -Wno-unused-label -Wno-unused-parameter -Wunused-variable -Wunused-value -Wuninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-sign-compare -Wshorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-selector -Wno-strict-selector-match -Wno-undeclared-selector -Wno-deprecated-implementations -DDEBUG=1 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk -fasm-blocks -Wprotocol -Wdeprecated-declarations -mmacosx-version-min=10.7 -g -Wno-conversion -Wno-sign-conversion "-DIBOutlet=__attribute__((iboutlet))" "-DIBOutletCollection(ClassName)=__attribute__((iboutletcollection(ClassName)))" "-DIBAction=void)__attribute__((ibaction)" -I/Users/aurelien/Library/Developer/Xcode/DerivedData/projetCS2-gdnozsjskcozmxcvmlmmpsmmkcvk/Build/Intermediates/projetCS2.build/Debug/projetCS2.build/projetCS2.hmap -I/Users/aurelien/Library/Developer/Xcode/DerivedData/projetCS2-gdnozsjskcozmxcvmlmmpsmmkcvk/Build/Products/Debug/include -I/Library/Frameworks/SDL.framework/Headers -I/Library/Frameworks/SDL_image.framework/Headers -I/Library/Frameworks/SDL_ttf.framework/Headers -I/Users/aurelien/Library/Developer/Xcode/DerivedData/projetCS2-gdnozsjskcozmxcvmlmmpsmmkcvk/Build/Intermediates/projetCS2.build/Debug/projetCS2.build/DerivedSources/i386 -I/Users/aurelien/Library/Developer/Xcode/DerivedData/projetCS2-gdnozsjskcozmxcvmlmmpsmmkcvk/Build/Intermediates/projetCS2.build/Debug/projetCS2.build/DerivedSources -F/Users/aurelien/Library/Developer/Xcode/DerivedData/projetCS2-gdnozsjskcozmxcvmlmmpsmmkcvk/Build/Products/Debug -F/Library/Frameworks --serialize-diagnostics /Users/aurelien/Library/Developer/Xcode/DerivedData/projetCS2-gdnozsjskcozmxcvmlmmpsmmkcvk/Build/Intermediates/PrecompiledHeaders/projetCS2-Prefix-auneaovyjutgotajcmkllwxdblci/projetCS2-Prefix.pch.dia -c /Users/aurelien/Documents/Programmation/projetC-S2/projetCS2/projetCS2/projetCS2-Prefix.pch -o /Users/aurelien/Library/Developer/Xcode/DerivedData/projetCS2-gdnozsjskcozmxcvmlmmpsmmkcvk/Build/Intermediates/PrecompiledHeaders/projetCS2-Prefix-auneaovyjutgotajcmkllwxdblci/projetCS2-Prefix.pch.pth -MMD -MT dependencies -MF /Users/aurelien/Library/Developer/Xcode/DerivedData/projetCS2-gdnozsjskcozmxcvmlmmpsmmkcvk/Build/Intermediates/PrecompiledHeaders/projetCS2-Prefix-auneaovyjutgotajcmkllwxdblci/projetCS2-Prefix.pch.d
error: -fobjc-arc is not supported with fragile abi
Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 1