SysTools
initSysTools
runUnlit
runCpp
runCc
runPp
runSplit
runAs
runLink
runMkDLL
runWindres
runLlvmOpt
runLlvmLlc
runClang
figureLlvmVersion
readElfSection
askCc
touch
copy
copyWithHeader
setTmpDir
newTempName
cleanTempDirs
cleanTempFiles
cleanTempFilesExcept
addFilesToClean
data Option