帮助，我的智慧结束 - 有时候我的Xcode会运行 - 有时候我不会继续
我安装了Xcode 4.1然后升级到4.2
我甚至无法运行一个新制作的项目：（
ProcessPCH /Users/david/Library/Developer/Xcode/DerivedData/iDecide-eurvfbqsagnsmkgdvuhytbalyxkj/Build/PrecompiledHeaders/iDecide-Prefix-fjnitkqizspbsgezzdhvfinujnhz/iDecide-Prefix.pch.pth iDecide / iDecide-Prefix.pch正常i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler cd / Users / david / Documents / tmp / iDecide setenv LANG en_US.US-ASCII setenv PATH“/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/Users/david/.rvm/gems/ruby-1.9.2-p180/bin:/Users/david/ .rvm /宝石/红宝石1.9.2-P180 @全球/斌：/Users/david/.rvm/rubies/ruby-1.9.2-p180/bin：/Users/david/.rvm/bin：/用户/大卫/ Apache的行家-3.0.3 / bin中：在/ usr / local / bin目录：在/ usr / bin中：/ bin中：/ usr / sbin目录：/ sbin目录：在/ usr / X11 / bin中：/系统/库/的Java / JavaVirtualMachines /1.6.0.jdk/Contents/Home/bin:/usr/local/Cellar/android-sdk/r15/platform-tools:/Users/david/groovy-1.8.2/bin:/Users/david/grails- 1.3.7 / bin中：在/ usr / local / lib目录/ node_modules：在/ usr / local / share下/ aclocal会：/usr/local/Cellar/liquibase/2.0.3/libexec” /usr/bin/gcc-4.2 -x objective-c-header -arch i386 -fmessage-length = 0 -fdiagnostics-print-source-range-info -fdiagnostics-show-category = id -fdiagnostics-parseable-fixits -std = gnu99 -fobjc-arc -Wno-trigraphs -fpascal-strings -O0 -Wmissing-prototypes -Wreturn-type -Wharentheses -Wswitch -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-shorten-64-to -32 -DDEBUG = 1 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -fexceptions -fasm-blocks -mmacosx-version-min = 10.6 -gdwarf-2 -Wno-sign-conversion -fobjc-abi-version = 2 -fobjc-legacy-dispatch“-DIBOutlet = attribute （（IBOutlet中））” “-DIBOutletCollection（类名）= 属性（（iboutletcollection（类名）））” “-DIBAction =空隙）的属性（（IBAction为）” -D__IPHONE_OS_VERSION_MIN_REQUIRED = 50000 -iquote /Users/david/Library/Developer/Xcode/DerivedData/iDecide-eurvfbqsagnsmkgdvuhytbalyxkj/Build/Intermediates/iDecide.build/Debug-iphonesimulator/iDecide.build/iDecide-generated-files.hmap -I /用户/大卫/库/开发商/ Xcode中/ DerivedData / iDecide-eurvfbqsagnsmkgdvuhytbalyxkj /编译/中间体/ iDecide.build /调试-iphonesimulator / iDecide.build / iDecide-自己的目标，headers.hmap -I /用户/大卫/库/开发商/ Xcode中/ DerivedData / iDecide-eurvfbqsagnsmkgdvuhytbalyxkj /编译/中间体/ iDecide.build /调试-iphonesimulator / iDecide.build / iDecide-所有目标headers.hmap -iquote /Users/david/Library/Developer/Xcode/DerivedData/iDecide-eurvfbqsagnsmkgdvuhytbalyxkj/Build/Intermediates/iDecide.build/Debug-iphonesimulator/iDecide.build/iDecide-project-headers.hmap -I /用户/大卫/库/开发商/ Xcode中/ DerivedData / iDecide-eurvfbqsagnsmkgdvuhytbalyxkj /编译/产品/调试-iphonesimulator /包括 -I /用户/大卫/库/开发商/ Xcode中/ DerivedData / iDecide-eurvfbqsagnsmkgdvuhytbalyxkj /编译/中间体/ iDecide.build /调试-iphonesimulator / iDecide.build / DerivedSources / I386 -I /用户/大卫/库/开发商/ Xcode中/ DerivedData / iDecide-eurvfbqsagnsmkgdvuhytbalyxkj /编译/中间体/ iDecide.build /调试-iphonesimulator / iDecide.build / DerivedSources -F /用户/大卫/库/开发商/ Xcode中/ DerivedData / iDecide-eurvfbqsagnsmkgdvuhytbalyxkj /编译/产品/调试，iphonesimulator -c /Users/david/Documents/tmp/iDecide/iDecide/iDecide-Prefix.pch -o / Users / david / Library / Developer / Xcode / DerivedData / iDecide-eurvfbqsagnsmkgdvuhytbalyxkj / Build / PrecompiledHeaders / iDecide-Prefix-fjnitkqizspbsgezzdhvfinujnhz / iDecide -Prefix.pch.pth -MMD -MT依赖项-MF /Users/david/Library/Developer/Xcode/DerivedData/iDecide-eurvfbqsagnsmkgdvuhytbalyxkj/Build/PrecompiledHeaders/iDecide-Prefix-fjnitkqizspbsgezzdhvfinujnhz/iDecide-Prefix.pch.d
cc1obj：错误：无法识别的命令行选项“-Wno-sign-conversion” cc1obj：错误：无法识别的命令行选项 “-fdiagnostics-print-source-range-info”cc1obj：错误：无法识别 命令行选项“-fdiagnostics-show-category = id”cc1obj：错误： 无法识别的命令行选项“-fdiagnostics-parseable-fixits” cc1obj：错误：无法识别的命令行选项“-fobjc-arc”命令 /usr/bin/gcc-4.2因退出代码1而失败