Config::Perl::V(3p) Perl Programmers Reference Guide Config::Perl::V(3p) #
Config::Perl::V(3p) Perl Programmers Reference Guide Config::Perl::V(3p)
NNAAMMEE #
Config::Perl::V - Structured data retrieval of perl -V output
SSYYNNOOPPSSIISS #
use Config::Perl::V;
my $local_config = Config::Perl::V::myconfig ();
print $local_config->{config}{osname};
DDEESSCCRRIIPPTTIIOONN #
$$ccoonnff == mmyyccoonnffiigg (()) This function will collect the data described in “The hash structure” below, and return that as a hash reference. It optionally accepts an option to include more entries from %ENV. See “environment” below.
Note that this will not work on uninstalled perls when called with
"-I/path/to/uninstalled/perl/lib", but it works when that path is in
$PERL5LIB or in $PERL5OPT, as paths passed using "-I" are not known when
the "-V" information is collected.
$$ccoonnff == ppllvv22hhaasshh (($$tteexxtt [[,, ......]])) Convert a sole ‘perl -V’ text block, or list of lines, to a complete myconfig hash. All unknown entries are defaulted.
$$iinnffoo == ssuummmmaarryy (([[$$ccoonnff]])) Return an arbitrary selection of the information. If no $conf is given, “myconfig ()” is used instead.
$$mmdd55 == ssiiggnnaattuurree (([[$$ccoonnff]])) Return the MD5 of the info returned by “summary ()” without the “config_args” entry.
If "Digest::MD5" is not available, it return a string with only 0's.
TThhee hhaasshh ssttrruuccttuurree The returned hash consists of 4 parts:
build
This information is extracted from the second block that is emitted
by "perl -V", and usually looks something like
Characteristics of this binary (from libperl):
Compile-time options: DEBUGGING USE_64_BIT_INT USE_LARGE_FILES
Locally applied patches:
defined-or
MAINT24637 #
Built under linux
Compiled at Jun 13 2005 10:44:20
@INC: #
/usr/lib/perl5/5.8.7/i686-linux-64int
/usr/lib/perl5/5.8.7
/usr/lib/perl5/site_perl/5.8.7/i686-linux-64int
/usr/lib/perl5/site_perl/5.8.7
/usr/lib/perl5/site_perl
.
or
Characteristics of this binary (from libperl):
Compile-time options: DEBUGGING MULTIPLICITY
PERL_DONT_CREATE_GVSV PERL_IMPLICIT_CONTEXT #
PERL_MALLOC_WRAP PERL_TRACK_MEMPOOL #
PERL_USE_SAFE_PUTENV USE_ITHREADS #
USE_LARGE_FILES USE_PERLIO #
USE_REENTRANT_API #
Built under linux
Compiled at Jan 28 2009 15:26:59
This information is not available anywhere else, including %Config,
but it is the information that is only known to the perl binary.
The extracted information is stored in 5 entries in the "build" hash:
osname
This is most likely the same as $Config{osname}, and was the name
known when perl was built. It might be different if perl was
cross-compiled.
The default for this field, if it cannot be extracted, is to copy
$Config{osname}. The two may be differing in casing (OpenBSD vs
openbsd).
stamp
This is the time string for which the perl binary was compiled.
The default value is 0.
options
This is a hash with all the known defines as keys. The value is
either 0, which means unknown or unset, or 1, which means
defined.
derived
As some variables are reported by a different name in the output
of "perl -V" than their actual name in %Config, I decided to
leave the "config" entry as close to reality as possible, and put
in the entries that might have been guessed by the printed output
in a separate block.
patches
This is a list of optionally locally applied patches. Default is
an empty list.
environment
By default this hash is only filled with the environment variables
out of %ENV that start with "PERL", but you can pass the "env" option
to myconfig to get more
my $conf = Config::Perl::V::myconfig ({ env => qr/^ORACLE/ });
my $conf = Config::Perl::V::myconfig ([ env => qr/^ORACLE/ ]);
config
This hash is filled with the variables that "perl -V" fills its
report with, and it has the same variables that "Config::myconfig"
returns from %Config.
inc This is the list of default @INC.
RREEAASSOONNIINNGG #
This module was written to be able to return the configuration for the
currently used perl as deeply as needed for the CPANTESTERS framework.
Up until now they used the output of myconfig as a single text blob, and
so it was missing the vital binary characteristics of the running perl
and the optional applied patches.
BBUUGGSS #
Please feedback what is wrong
TTOODDOO #
* Implement retrieval functions/methods
* Documentation
* Error checking
* Tests
AAUUTTHHOORR #
H.Merijn Brand <h.m.brand@xs4all.nl>
CCOOPPYYRRIIGGHHTT AANNDD LLIICCEENNSSEE #
Copyright (C) 2009-2020 H.Merijn Brand
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
perl v5.36.3 2023-02-15 Config::Perl::V(3p)