usage: scons [OPTIONS] [VARIABLES] [TARGETS]

SCons Options:
  -c, --clean, --remove       Remove specified targets and dependencies
  -C DIR, --directory=DIR     Change to DIR before doing anything
  --cache-debug=FILE          Print CacheDir debug info to FILE
  --cache-disable, --no-cache
                              Do not retrieve built targets from CacheDir
  --cache-force, --cache-populate
                              Copy already-built targets into the CacheDir
  --cache-readonly            Do not update CacheDir with built targets
  --cache-show                Print build actions for files from CacheDir
  --config=MODE               Controls Configure subsystem [auto, force, cache]
  -D                          Search up directory tree for SConstruct, build all Default() targets
  --debug=TYPE                Print various types of debugging information [count, duplicate,
                                explain, findlibs, includes, memoizer, memory, objects, pdb,
                                prepare, presub, stacktrace, time, action-timestamps, json,
                                sconscript]
  --diskcheck=TYPE            Enable specific on-disk checks
  --duplicate=DUPLICATE       Set the preferred duplication methods [hard-soft-copy, soft-hard-copy,
                                hard-copy, soft-copy, copy]
  --enable-virtualenv         Import certain virtualenv variables to SCons
  --experimental=EXPERIMENTAL
                              Enable experimental features
  -f FILE, --file=FILE, --makefile=FILE, --sconstruct=FILE
                              Read FILE as the top-level SConstruct file
  -h, --help                  Print defined help message, or this one
  -H, --help-options          Print this message and exit
  --hash-chunksize=N, --md5-chunksize=N
                              Set chunk-size for hash signature computation to N kilobytes
  --hash-format=HASH_FORMAT   Hash format [md5, sha1, sha256, etc].
  -i, --ignore-errors         Ignore errors from build actions
  -I DIR, --include-dir=DIR   Search DIR for imported Python modules
  --ignore-virtualenv         Do not import virtualenv variables to SCons
  --implicit-cache            Cache implicit dependencies
  --implicit-deps-changed     Ignore cached implicit dependencies
  --implicit-deps-unchanged   Ignore changes in implicit dependencies
  --interact, --interactive   Run in interactive mode
  -j N, --jobs=N              Allow N jobs at once
  -k, --keep-going            Keep going when a target can't be made
  --max-drift=N               Set maximum system clock drift to N seconds
  -n, --no-exec, --just-print, --dry-run, --recon
                              Don't build; just print commands
  --no-site-dir               Don't search or use the usual site_scons dir
  --profile=FILE              Profile SCons and put results in FILE
  -q, --question              Don't build; exit status says if up to date
  -Q                          Suppress "Reading/Building" progress messages
  --random                    Build dependencies in random order
  -s, --silent, --quiet       Don't print commands
  --site-dir=DIR              Use DIR instead of the usual site_scons dir
  --stack-size=N              Set the stack size of the threads used to run jobs to N kilobytes
  --taskmastertrace=FILE      Trace Node evaluation to FILE
  --tree=OPTIONS              Print a dependency tree in various formats [all, derived, prune,
                                status, linedraw]
  -u, --up, --search-up       Search up directory tree for SConstruct, build targets at or below
                                current directory
  -U                          Search up directory tree for SConstruct, build Default() targets from
                                local SConscript
  -v, --version               Print the SCons version number and exit
  --warn=WARNING-SPEC, --warning=WARNING-SPEC
                              Enable or disable warnings
  -Y REPOSITORY, --repository=REPOSITORY, --srcdir=REPOSITORY
                              Search REPOSITORY for source and target files