Clang scan-build不适用于Xcode 4.2 LLVM 3.0构建配置

Question

我已经安装了Xcode4.2最终版，以便能够为iOS 5编译。

我们使用Jenkins作为CI，并从llvm.org项目页面运行Clang scan-build。(版本258)该项目配置为使用LLVM 3.0 (从Xcode 4.2开始是默认的)。现在，每次我尝试运行scan-build时，是否得到以下错误：

CompileC build/Cortado.build/Debug-iphonesimulator/Cortado.build/Objects-normal/i386/TPContentDetailViewController_iPad.o Classes/iPad/TPContentDetailViewController_iPad.m normal i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler
    cd "/Volumes/Sources/Starteam - Main View/Workplace/Cortado"
    setenv LANG en_US.US-ASCII
    setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/Applications/android-sdk-mac_x86/android-ndk-r6b:/Applications/android-sdk-mac_x86/platform-tools:/Applications/android-sdk-mac_x86/tools:/Volumes/Sources/Starteam - Main View/Tools:/Volumes/Sources/Tools:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin"
    /Users/thwee/Downloads/checker-258/libexec/ccc-analyzer -x objective-c -arch i386 -fmessage-length=0 -fdiagnostics-print-source-range-info -fdiagnostics-show-category=id -fdiagnostics-parseable-fixits -Wno-trigraphs -fpascal-strings -O0 -Wreturn-type -Wparentheses -Wswitch -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-shorten-64-to-32 -DDEBUG -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -fexceptions -fasm-blocks -fprofile-arcs -ftest-coverage -mmacosx-version-min=10.6 -gdwarf-2 -Wno-sign-conversion -fobjc-abi-version=2 -fobjc-legacy-dispatch "-DIBOutlet=__attribute__((iboutlet))" "-DIBOutletCollection(ClassName)=__attribute__((iboutletcollection(ClassName)))" "-DIBAction=void)__attribute__((ibaction)" -D__IPHONE_OS_VERSION_MIN_REQUIRED=40100 -iquote "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Cortado-generated-files.hmap" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Cortado-own-target-headers.hmap" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Cortado-all-target-headers.hmap" -iquote "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Cortado-project-headers.hmap" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Debug-iphonesimulator/include" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/DerivedSources/i386" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/DerivedSources" "-F/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Debug-iphonesimulator" -include "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/Cortado_Prefix.pch" -MMD -MT dependencies -MF "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Objects-normal/i386/TPContentDetailViewController_iPad.d" -c "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/Classes/iPad/TPContentDetailViewController_iPad.m" -o "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Objects-normal/i386/TPContentDetailViewController_iPad.o"
cc1obj: error: unrecognized command line option "-Wno-sign-conversion"
cc1obj: error: unrecognized command line option "-fdiagnostics-print-source-range-info"
cc1obj: error: unrecognized command line option "-fdiagnostics-show-category=id"
cc1obj: error: unrecognized command line option "-fdiagnostics-parseable-fixits"

如果我使用Xcode self的静态代码分析器，我会得到以下输出，没有问题：

CompileC build/Cortado.build/Debug-iphonesimulator/Cortado.build/Objects-normal/i386/TPInfoCell.o Classes/TPInfoCell.m normal i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler
    cd "/Volumes/Sources/Starteam - Main View/Workplace/Cortado"
    setenv LANG en_US.US-ASCII
    setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang -x objective-c -arch i386 -fmessage-length=0 -fdiagnostics-print-source-range-info -fdiagnostics-show-category=id -fdiagnostics-parseable-fixits -Wno-trigraphs -fpascal-strings -O0 -Wreturn-type -Wparentheses -Wswitch -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-shorten-64-to-32 -DDEBUG -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -fexceptions -fasm-blocks -fprofile-arcs -ftest-coverage -mmacosx-version-min=10.6 -gdwarf-2 -Wno-sign-conversion -fobjc-abi-version=2 -fobjc-legacy-dispatch "-DIBOutlet=__attribute__((iboutlet))" "-DIBOutletCollection(ClassName)=__attribute__((iboutletcollection(ClassName)))" "-DIBAction=void)__attribute__((ibaction)" -D__IPHONE_OS_VERSION_MIN_REQUIRED=40100 -iquote "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Cortado-generated-files.hmap" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Cortado-own-target-headers.hmap" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Cortado-all-target-headers.hmap" -iquote "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Cortado-project-headers.hmap" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Debug-iphonesimulator/include" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/DerivedSources/i386" "-I/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/DerivedSources" "-F/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Debug-iphonesimulator" -include /var/folders/m7/1lwxj7113xb17b8k635bn0200000gn/C/com.apple.Xcode.501/SharedPrecompiledHeaders/Cortado_Prefix-curmpedgpezkvsgarfuwvmdrauwa/Cortado_Prefix.pch -MMD -MT dependencies -MF "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Objects-normal/i386/TPInfoCell.d" -c "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/Classes/TPInfoCell.m" -o "/Volumes/Sources/Starteam - Main View/Workplace/Cortado/build/Cortado.build/Debug-iphonesimulator/Cortado.build/Objects-normal/i386/TPInfoCell.o"

有没有人知道我可以做些什么来让scan-build再次运行而不禁用LLVM3.0的使用？！

Answer 1

找到了让checker-258构建的解决方案：

将此参数传递给scan-build：--use-cc=which clang

然后用jenkins和scan-build插件来构建...这有点棘手：

将scan-build移动到scan-build.bin，然后将scan-build作为脚本：

#!/bin/sh

dir=$(dirname $0)
$dir/scan-build.bin --use-cc=`which clang` $@

clang的结果是:/usr/bin/ which clang

编辑:参与了两个项目，一个使用LLVM 3.0，另一个使用llvm-gcc4.2。

Answer 2

我向苹果提出了一个关于这个和其他问题的bug (比如扫描-构建不能识别ARC的代码)。

修复方法是安装checker-260，请参阅http://clang-analyzer.llvm.org/release_notes.html加上对ccc-analyzer - http://llvm.org/viewvc/llvm-project?view=rev&revision=149094的修改。希望ccc分析器的修复将被合并到扫描构建的未来版本中。

使用此最新版本的scan-build将避免您必须对上一个答案中描述的scan-build进行修改。

Answer 3

看起来scan-build决定使用llvm- which，这让Xcode感到困惑，因为它期望运行clang。可能只是scan-build中的一个bug；我建议发送一封电子邮件到cfe-dev。