# phpman > man > ExtUtils::Constant::XS

## NAME
    [ExtUtils::Constant::XS](https://www.chedong.com/phpMan.php/perldoc/ExtUtils%3A%3AConstant%3A%3AXS/markdown) - generate C code for XS modules' constants.

## SYNOPSIS
        require [ExtUtils::Constant::XS](https://www.chedong.com/phpMan.php/perldoc/ExtUtils%3A%3AConstant%3A%3AXS/markdown);

## DESCRIPTION
    [ExtUtils::Constant::XS](https://www.chedong.com/phpMan.php/perldoc/ExtUtils%3A%3AConstant%3A%3AXS/markdown) overrides [ExtUtils::Constant::Base](https://www.chedong.com/phpMan.php/perldoc/ExtUtils%3A%3AConstant%3A%3ABase/markdown) to generate C code for XS modules'
    constants.

## BUGS
    Nothing is documented.

    Probably others.

## AUTHOR
    Nicholas Clark <<nick@ccl4.org>> based on the code in "h2xs" by Larry Wall and others