Config

Used to access configuration information. When Perl is built, the Configure script obtains and saves this information in a hash, %Config, in Config.pm itself. Config checks to be sure it's running with the same Perl version as the one that created the hash.

The index into the hash is the shell variable name. %Config is always exported; the following three functions are exported on request.

config_sh 

Returns all Perl configuration information.

use Config(qw(config_sh));
print config_sh( );

returns:

archlibexp="sun4-solaris" cc="cc" ccflags="-i/usr/local/include/sfio -i/usr/local/include" ...

config_vars (names) 

Returns the name/value pairs for the requested configuration variables. Prints the results to STDOUT.

use Config(qw(config_vars));
print config_vars(qw(osname ccflags));

returns:

osname="solaris" ccflags="-i/usr/local/include/sfio -i/usr/local/include"

myconfig 

Returns a summary of the major Perl configuration values.