Filter::cpp man page on RedHat

Man page or keyword search:  
man Server   29550 pages
apropos Keyword Search (all sections)
Output format
RedHat logo
[printable version]

Filter::cpp(3)	      User Contributed Perl Documentation	Filter::cpp(3)

NAME
       Filter::cpp - cpp source filter

SYNOPSIS
	   use Filter::cpp ;

DESCRIPTION
       This source filter pipes the current source file through the C pre-
       processor (cpp) if it is available.

       As with all source filters its scope is limited to the current source
       file only. Every file you want to be processed by the filter must have
       a

	   use Filter::cpp ;

       near the top.

       Here is an example script which uses the filter:

	   use Filter::cpp ;

	   #define FRED 1
	   $a = 2 + FRED ;
	   print "a = $a\n" ;
	   #ifdef FRED
	   print "Hello FRED\n" ;
	   #else
	   print "Where is FRED\n" ;
	   #endif

       And here is what it will output:

	   a = 3
	   Hello FRED

       This example below, provided by Michael G Schwern, shows a clever way
       to get Perl to use a C pre-processor macro when the Filter::cpp module
       is available, or to use a Perl sub when it is not.

	   # use Filter::cpp if we can.
	   BEGIN { eval 'use Filter::cpp' }

	   sub PRINT {
	       my($string) = shift;

	   #define PRINT($string) \
	       (print $string."\n")
	   }

	   PRINT("Mu");

       Look at Michael's Tie::VecArray module for a practical use.

AUTHOR
       Paul Marquess

DATE
       11th December 1995.

perl v5.16.3			  2013-03-29			Filter::cpp(3)
[top]

List of man pages available for RedHat

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net