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libapache2-mod-perl2-2.0.11::docs::api::ModPerl::MM(3pm) User Contributed Perl Documentation libapache2-mod-perl2-2.0.11::docs::api::ModPerl::MM(3pm)

NAME

ModPerl::MM -- A "subclass" of ExtUtils::MakeMaker for mod_perl 2.0

Synopsis

  use ModPerl::MM;
  
  # ModPerl::MM takes care of doing all the dirty job of overriding 
  ModPerl::MM::WriteMakefile(...);

  # if there is a need to extend the default methods 
  sub MY::constants {
      my $self = shift;
      $self->ModPerl::MM::MY::constants;
      # do something else;
  }

  # or prevent overriding completely
  sub MY::constants { shift->MM::constants(@_); }";

  # override the default value of WriteMakefile's attribute
  my $extra_inc = "/foo/include";
  ModPerl::MM::WriteMakefile(
      ...
      INC => $extra_inc,
      ...
  );

  # extend the default value of WriteMakefile's attribute
  my $extra_inc = "/foo/include";
  ModPerl::MM::WriteMakefile(
      ...
      INC => join " ", $extra_inc, ModPerl::MM::get_def_opt('INC'),
      ...
  );

Description

"ModPerl::MM" is a "subclass" of "ExtUtils::MakeMaker" for mod_perl 2.0, to a degree of sub-classability of "ExtUtils::MakeMaker".

When "ModPerl::MM::WriteMakefile()" is used instead of "ExtUtils::MakeMaker::WriteMakefile()", "ModPerl::MM" overrides several "ExtUtils::MakeMaker" methods behind the scenes and supplies default "WriteMakefile()" arguments adjusted for mod_perl 2.0 build. It's written in such a way so that normally 3rd party module developers for mod_perl 2.0, don't need to mess with Makefile.PL at all.

"MY::" Default Methods

"ModPerl::MM" overrides method foo as long as Makefile.PL hasn't already specified a method MY::foo. If the latter happens, "ModPerl::MM" will DWIM and do nothing.

In case the functionality of "ModPerl::MM" methods needs to be extended, rather than completely overridden, the "ModPerl::MM" methods can be called internally. For example if you need to modify constants in addition to the modifications applied by "ModPerl::MM::MY::constants", call the "ModPerl::MM::MY::constants" method (notice that it resides in the package "ModPerl::MM::MY" and not "ModPerl::MM"), then do your extra manipulations on constants:

  # if there is a need to extend the methods 
  sub MY::constants {
      my $self = shift;
      $self->ModPerl::MM::MY::constants;
      # do something else;
  }

In certain cases a developers may want to prevent from "ModPerl::MM" to override certain methods. In that case an explicit override in Makefile.PL will do the job. For example if you don't want the "constants()" method to be overridden by "ModPerl::MM", add to your Makefile.PL:

  sub MY::constants { shift->MM::constants(@_); }";

"ModPerl::MM" overrides the following methods:

"ModPerl::MM::MY::post_initialize"

This method is deprecated.

"WriteMakefile()" Default Arguments

"ModPerl::MM::WriteMakefile" supplies default arguments such as "INC" and "TYPEMAPS" unless they weren't passed to "ModPerl::MM::WriteMakefile" from Makefile.PL.

If the default values aren't satisfying these should be overridden in Makefile.PL. For example to supply an empty INC, explicitly set the argument in Makefile.PL.

  ModPerl::MM::WriteMakefile(
      ...
      INC => '',
      ...
  );

If instead of fully overriding the default arguments, you want to extend or modify them, they can be retrieved using the "ModPerl::MM::get_def_opt()" function. The following example appends an extra value to the default "INC" attribute:

  my $extra_inc = "/foo/include";
  ModPerl::MM::WriteMakefile(
      ...
      INC => join " ", $extra_inc, ModPerl::MM::get_def_opt('INC'),
      ...
  );

"ModPerl::MM" supplies default values for the following "ModPerl::MM::WriteMakefile" attributes:

"CCFLAGS"

"LIBS"

"INC"

"OPTIMIZE"

"LDDLFLAGS"

"TYPEMAPS"

"dynamic_lib"

"OTHERLDFLAGS"

  dynamic_lib => { OTHERLDFLAGS => ... }

"macro"

"MOD_INSTALL"

  macro => { MOD_INSTALL => ... }

makes sure that Apache-Test/ is added to @INC.

Public API

The following functions are a part of the public API. They are described elsewhere in this document.

"WriteMakefile()"

  ModPerl::MM::WriteMakefile(...);

"get_def_opt()"

  my $def_val = ModPerl::MM::get_def_opt($key);
2019-10-13 perl v5.30.0