我正在一个新的 iPhone 项目中编译 ASIHTTPRequest，并且在编译时遇到了一个重大错误。
错误是：
clang: error: no such file or directory: 'set'
Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed `with exit code 1
分析编译字符串后，只有 1 个地方出现了 'set'，就在这一行：
set -fno-objc-arc --serialize-diagnostics
所以也许这失败了？
如果是这样，我该如何取出这条线来构建它？
完整的编译字符串：
ProcessPCH /Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter- bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/PrecompiledHeaders/ArrestsPlotter-Prefix- asfyhfrzleolpzgggflhpvakdbtg/ArrestsPlotter-Prefix.pch.pth ArrestsPlotter/ArrestsPlotter-Prefix.pch normal i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler
cd /Users/willmoss26/Documents/XCode/ArrestsPlotter
setenv LANG en_US.US-ASCII
setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/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 -Wno-receiver-is-weak -Wduplicate-method-match -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-conversion -Wno-sign-compare -Wno-shorten-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/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk -fexceptions -fasm-blocks -Wprotocol -Wdeprecated-declarations -mmacosx-version-min=10.6 -g -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=50100 -iquote /Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/ArrestsPlotter.build/Debug-iphonesimulator/ArrestsPlotter.build/ArrestsPlotter-generated-files.hmap -I/Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/ArrestsPlotter.build/Debug-iphonesimulator/ArrestsPlotter.build/ArrestsPlotter-own-target-headers.hmap -I/Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/ArrestsPlotter.build/Debug-iphonesimulator/ArrestsPlotter.build/ArrestsPlotter-all-target-headers.hmap -iquote /Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/ArrestsPlotter.build/Debug-iphonesimulator/ArrestsPlotter.build/ArrestsPlotter-project-headers.hmap -I/Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Products/Debug-iphonesimulator/include -I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include -I/Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/ArrestsPlotter.build/Debug-iphonesimulator/ArrestsPlotter.build/DerivedSources/i386 -I/Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/ArrestsPlotter.build/Debug-iphonesimulator/ArrestsPlotter.build/DerivedSources -F/Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Products/Debug-iphonesimulator set -fno-objc-arc --serialize-diagnostics /Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/PrecompiledHeaders/ArrestsPlotter-Prefix-asfyhfrzleolpzgggflhpvakdbtg/ArrestsPlotter-Prefix.pch.dia -c /Users/willmoss26/Documents/XCode/ArrestsPlotter/ArrestsPlotter/ArrestsPlotter-Prefix.pch -o /Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/PrecompiledHeaders/ArrestsPlotter-Prefix-asfyhfrzleolpzgggflhpvakdbtg/ArrestsPlotter-Prefix.pch.pth -MMD -MT dependencies -MF /Users/willmoss26/Library/Developer/Xcode/DerivedData/ArrestsPlotter-bafbkfhslokdxwcjmtzgipqcqgiv/Build/Intermediates/PrecompiledHeaders/ArrestsPlotter-Prefix-asfyhfrzleolpzgggflhpvakdbtg/ArrestsPlotter-Prefix.pch.d
非常感谢 ：）