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Manual Reference Pages  - B::Bytecode (3pm)

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B::Bytecode - Perl compiler’s bytecode backend

CONTENTS

perl -MO=Bytecode[,-H][,-oscript.plc] script.pl

Compiles a Perl script into a bytecode format that could be loaded later by the ByteLoader module and executed as a regular Perl script.

    $ perl -MO=Bytecode,-H,-ohi -e ’print "hi!\n"’
    $ perl hi
    hi!

-b	Save all the BEGIN blocks. Normally only BEGIN blocks that require other files (ex. use Foo;) are saved.
-H	prepend a use ByteLoader VERSION; line to the produced bytecode.
-k	keep the syntax tree - it is stripped by default.
-ooutfile	put the bytecode in <outfile> instead of dumping it to STDOUT.
-s	scan the script for # line .. directives and for <goto LABEL> expressions. When gotos are found keep the syntax tree.

o	BEGIN { goto A: while 1; A: } won’t even compile.
o	?...? and reset do not work as expected.
o	variables in (?{ ... }) constructs are not properly scoped.
o	scripts that use source filters will fail miserably.

There are also undocumented bugs and options.

THIS CODE IS HIGHLY EXPERIMENTAL. USE AT YOUR OWN RISK.

Originally written by Malcolm Beattie <mbeattie@sable.ox.ac.uk> and modified by Benjamin Stuhl <sho_pi@hotmail.com>.

Rewritten by Enache Adrian <enache@rdslink.ro>, 2003 a.d.

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