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LUAC(1)                     General Commands Manual                    LUAC(1)

       luac - Lua compiler

       luac [ options ] [ filenames ]

       luac  is  the  Lua compiler.  It translates programs written in the Lua
       programming language into binary files that can  be  later  loaded  and

       The  main  advantages  of  precompiling  chunks  are:  faster  loading,
       protecting source code  from  accidental  user  changes,  and  off-line
       syntax checking.

       Pre-compiling does not imply faster execution because in Lua chunks are
       always compiled into bytecodes  before  being  executed.   luac  simply
       allows those bytecodes to be saved in a file for later execution.

       Pre-compiled  chunks are not necessarily smaller than the corresponding
       source.  The main goal in pre-compiling is faster loading.

       The binary files created by luac are portable only among  architectures
       with the same word size and byte order.

       luac  produces  a  single  output file containing the bytecodes for all
       source files given.  By default, the output file is named luac.out, but
       you can change this with the -o option.

       In  the  command line, you can mix text files containing Lua source and
       binary files containing precompiled chunks.  This is useful to  combine
       several  precompiled  chunks,  even  from  different  (but  compatible)
       platforms, into a single precompiled chunk.

       You can use '-' to indicate the standard input as  a  source  file  and
       '--'  to  signal  the  end of options (that is, all remaining arguments
       will be treated as files even if they start with '-').

       The internal format of the binary files produced by luac is  likely  to
       change  when  a  new  version  of Lua is released.  So, save the source
       files of all Lua programs that you precompile.

       Options must be separate.

       -l     produce a listing of the compiled  bytecode  for  Lua's  virtual
              machine.   Listing  bytecodes  is  useful  to  learn about Lua's
              virtual machine.   If  no  files  are  given,  then  luac  loads
              luac.out and lists its contents.

       -o file
              output  to  file, instead of the default luac.out.  (You can use
              '-' for standard output, but not on platforms that open standard
              output  in  text  mode.)   The  output file may be a source file
              because all files are loaded before the output file is  written.
              Be careful not to overwrite precious files.

       -p     load files but do not generate any output file.  Used mainly for
              syntax checking and for testing  precompiled  chunks:  corrupted
              files  will  probably  generate  errors when loaded.  Lua always
              performs  a  thorough  integrity  test  on  precompiled  chunks.
              Bytecode  that passes this test is completely safe, in the sense
              that it will not break the interpreter.  However,  there  is  no
              guarantee  that  such code does anything sensible.  (None can be
              given, because the halting problem is unsolvable.)  If no  files
              are  given, then luac loads luac.out and tests its contents.  No
              messages are displayed if the file passes the integrity test.

       -s     strip debug information before writing the  output  file.   This
              saves  some space in very large chunks, but if errors occur when
              running a stripped  chunk,  then  the  error  messages  may  not
              contain  the  full  information  they usually do.  For instance,
              line numbers and names of local variables are lost.

       -v     show version information.

       luac.out       default output file


       Error messages should be self explanatory.

       L. H. de Figueiredo, R. Ierusalimschy and W. Celes

                         $Date: 2012/03/15 00:08:21 $                  LUAC(1)