C
The C backend for the Perl compiler. Generates C source code from Perl source; the generated code corresponds to Perl's internal structures for running the program. Compiling with the C backend won't speed up execution of your program, but it may improve start-up time. Invoke as:
perl -MO=C[,options] program
where
program is the name of the Perl script to compile. Any non-option arguments are treated as the names of objects to be saved; the main program is assumed if there are no extra arguments. Possible options are:
- --
- Forces end of options.
- -Dopts
- Debug options, which can be either concatenated or specified separately. Possible options are:
A- Prints AV information on saving.
c- Prints COPs as they are processed, including file and line number.
C- Prints CV information on saving.
M- Prints MAGIC information on saving.
o- Prints each OP as it's processed.
- -fopt
- Forces individual optimizations on or off. Possible values of opt are:
cog- Copy-on-grow; PVs are declared and initialized statically.
no-cog- No copy-on-grow.
- -ofilename
- Sends output to filename instead of to STDOUT.
- -O[
n] - Sets optimization level, where n is an integer. n defaults to 1. Currently, values of 1 and higher set
cog. - -uPackname
- Forces apparently unused subroutines from package Packname to be compiled, letting programs use
eval"foo()"even if subroutinefooisn't seen to be used at compile time. You can specify multiple -u options. - -v
- Compiles verbosely.