ExtUtils::Constant facilitates generating C and XS wrapper code to allow perl modules to AUTOLOAD constants defined in C library header files. It is principally used by the "h2xs" utility, on which this code is based. It doesn't contain the routines ...

ExtUtils::Constant::XS overrides ExtUtils::Constant::Base to generate C code for XS modules' constants....

ExtUtils::Constant::Base provides a base implementation of methods to generate C code to give fast constant value lookup by named string. Currently it's mostly used ExtUtils::Constant::XS, which generates the lookup code for the constant() subroutine...

ExtUtils::Constant::Utils packages up utility subroutines used by ExtUtils::Constant, ExtUtils::Constant::Base and derived classes. All its functions are explicitly exportable....

This module assists in generating wrappers around system functionallity, such as "socket()" types or "ioctl()" calls, where the only interesting features required are the values of some constants or layouts of structures normally only known to the C ...

Often Perl modules are written to wrap functionality found in existing C headers, libraries, or to use OS-specific features. It is useful in the Build.PL or Makefile.PL file to check for the existance of these requirements before attempting to actual...

Refer to ExtUtils::Typemaps for details....