| The Simplified MakeMaker class hierarchy |
| **************************************** |
| |
| What most people need to know. |
| |
| (Subclasses on top.) |
| |
| MY |
| | |
| ExtUtils::MakeMaker |
| | |
| ExtUtils::MM_{Current OS} |
| | |
| ExtUtils::MM_Unix |
| | |
| ExtUtils::MM_Any |
| |
| The object actually used is of the class MY which allows you to |
| override bits of MakeMaker inside your Makefile.PL by declaring |
| MY::foo() methods. |
| |
| |
| The Real MakeMaker class hierarchy |
| ********************************** |
| |
| You wish it was that simple. |
| |
| Here's how it really works. |
| |
| PACK### (created each call to ExtUtils::MakeMaker->new) |
| . | |
| (mixin) | |
| . | |
| MY (created by ExtUtils::MY) | |
| | | |
| ExtUtils::MY MM (created by ExtUtils::MM) |
| | | |
| ExtUtils::MM |
| | | |----------------------- |
| | | | |
| ExtUtils::Liblist ExtUtils::MakeMaker | |
| | | |
| ExtUtils::Liblist::Kid | |
| | |
| | |
| | |
| ExtUtils::MM_{Current OS} (if necessary) |
| | |
| ExtUtils::MM_Unix |
| | |
| ExtUtils::MM_Any |
| |
| |
| NOTE: Yes, this is a mess. See |
| http://archive.develooper.com/makemaker@perl.org/msg00134.html |
| for some history. |
| |
| NOTE: When ExtUtils::MM is loaded it chooses a superclass for MM from |
| amongst the ExtUtils::MM_* modules based on the current operating |
| system. |
| |
| NOTE: ExtUtils::MM_{Current OS} represents one of the ExtUtils::MM_* |
| modules except ExtUtils::MM_Any chosen based on your operating system. |
| |
| NOTE: The main object used by MakeMaker is a PACK### object, *not* |
| ExtUtils::MakeMaker. It is, effectively, a subclass of MY, |
| ExtUtils::Makemaker, ExtUtils::Liblist and ExtUtils::MM_{Current OS} |
| |
| NOTE: The methods in MY are simply copied into PACK### rather than |
| MY being a superclass of PACK###. I don't remember the rationale. |
| |
| NOTE: ExtUtils::Liblist should be removed from the inheritence hiearchy |
| and simply be called as functions. |
| |
| NOTE: Modules like File::Spec and Exporter have been omitted for clarity. |
| |
| |
| The MM_* hierarchy |
| ****************** |
| |
| MM_Win95 MM_NW5 |
| \ / |
| MM_BeOS MM_Cygwin MM_OS2 MM_VMS MM_Win32 MM_DOS MM_UWIN |
| \ | | | / / / |
| ------------------------------------------------ |
| | | |
| MM_Unix | |
| | | |
| MM_Any |
| |
| NOTE: Each direct MM_Unix subclass is also an MM_Any subclass. This |
| is a temporary hack because MM_Unix overrides some MM_Any methods with |
| Unix specific code. It allows the non-Unix modules to see the |
| original MM_Any implementations. |
| |
| NOTE: Modules like File::Spec and Exporter have been omitted for clarity. |
