(List
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('LANG', {[LIT_CHARS C]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=1 words=[{[LIT_CHARS LANG]}] bindings=[])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('LC_ALL', {[LIT_CHARS C]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=1 words=[{[LIT_CHARS LC_ALL]}] bindings=[])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('LC_COLLATE', {[LIT_CHARS C]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=1 words=[{[LIT_CHARS LC_COLLATE]}] bindings=[])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('exit_status', {[LIT_CHARS 0]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('script', {[VarSub 0]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('dir_name', {[ComSub (Com {[LIT_CHARS dirname]} {[VarSub script]})]})])
  (If
    (Com {[LIT_CHARS test]} {[LIT_CHARS x] [DQ [VarSub 1]]} {[LIT_OTHER "="]} {[DQ [LIT_CHARS x]]})
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "USAGE: "][VarSub script][LIT_CHARS " libname header [header ...]"]]})
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]})
    )
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('libname', {[DQ [VarSub 1]]})])
  (Com {[LIT_CHARS shift]})
  (If
    (Com {[LIT_CHARS test]} {[LIT_CHARS x] [DQ [VarSub 1]]} {[LIT_OTHER "="]} {[DQ [LIT_CHARS x]]})
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "USAGE: "][VarSub script][LIT_CHARS " libname header [header ...]"]]})
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]})
    )
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('headers', {[DQ [VarSub *]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('exports_file', {[VarSub libname] [LIT_CHARS .exports]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('exports_file_check', {[VarSub exports_file] [LIT_CHARS .check]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('signatures_file', {[VarSub libname] [LIT_CHARS .signatures]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('signatures_file_check', {[VarSub signatures_file] [LIT_CHARS .check]})])
  (Com {[VarSub dir_name] [LIT_CHARS /mksyms.sh]} {[LIT_CHARS awk]} {[VarSub exports_file_check]} {[VarSub headers]}
    <
    (DescriptorRedirectNode target={[LIT_CHARS 1]} <REDIR_GREATAND "2>&"> 2),
    (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
    >
  )
  (Pipeline
    (Com {[LIT_CHARS cat]} {[VarSub headers]})
    (Com {[VarSub dir_name] [LIT_CHARS /mksigs.pl]})
    (Com {[LIT_CHARS sort]})
    (Com {[LIT_CHARS uniq]}
      <
      (FilenameRedirectNode filename={[VarSub signatures_file_check]} <REDIR_GREAT ">"> 1),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
  )
  (Com {[LIT_CHARS diff]} {[LIT_CHARS -u]} {[VarSub exports_file]} {[VarSub exports_file_check]})
  (If
    (Com {[LIT_CHARS test]} {[DQ [LIT_CHARS x][VarSub ?]]} {[LIT_OTHER "!"] [LIT_OTHER "="]} {[DQ [LIT_CHARS x0]]})
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "WARNING: possible ABI change detected in exports!"]]})
      (Com {[LIT_CHARS let]} {[LIT_CHARS exit_status] [LIT_OTHER "+"] [LIT_OTHER "+"]})
    )
    (ElseTrue)
    (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "exports check: OK"]]})
  )
  (Com {[LIT_CHARS diff]} {[LIT_CHARS -u]} {[VarSub signatures_file]} {[VarSub signatures_file_check]})
  (If
    (Com {[LIT_CHARS test]} {[DQ [LIT_CHARS x][VarSub ?]]} {[LIT_OTHER "!"] [LIT_OTHER "="]} {[DQ [LIT_CHARS x0]]})
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "WARNING: possible ABI change detected in signatures!"]]})
      (Com {[LIT_CHARS let]} {[LIT_CHARS exit_status] [LIT_OTHER "+"] [LIT_OTHER "+"]})
    )
    (ElseTrue)
    (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "signatures check: OK"]]})
  )
  (Com {[LIT_CHARS exit]} {[VarSub exit_status]})
)