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# ASPEER::MakeMaker::MM::Constant

## Name

ASPEER::MakeMaker::MM::Constant - exported constants and Makefile macro data

## Synopsis

```perl
use ASPEER::MakeMaker::MM::Constant qw(
    $ASPEER_MAKEMAKER_PM
    $TEMPLATE_POSTAMBLE_FN
    $UPDATE_SOURCE_UTIL_FN
    $UPDATE_SOURCE_IMPORT_FN
    $UPDATE_SOURCE_CONSTANT_FN
    $ASPEER_MAKEMAKER_PM_ARGV
);
```

```perl
use ASPEER::MakeMaker::MM::Constant qw(:all);
```

## Description

`ASPEER::MakeMaker::MM::Constant` defines constants used by the
MakeMaker hook layer and generated postamble targets.

The constants are stored in `%Constant`, exported as scalar package variables,
and copied into the Makefile macro table by
`ASPEER::MakeMaker::MM::Import::const_config`.

## Constants

### MM_PREFIX

Private prefix used when constructing this extension's Makefile macro names.
It is consumed by the hook implementation and is not emitted as the generic
Makefile macro `MM_PREFIX`. When omitted, the importing class name is
uppercased and `::` is replaced with `_`.

### ASPEER_MAKEMAKER_PM

The module name used by generated make targets when dispatching back into this
helper distribution.

Default:

```perl
ASPEER::MakeMaker
```

### TEMPLATE_POSTAMBLE_FN

Path to the bundled postamble template:

```text
lib/ASPEER/MakeMaker/MM/postamble.inc
```

### UPDATE_SOURCE_UTIL_FN

Path to this distribution's source `MM/Util.pm`. The `util_sync` target can use
this as the source file for utility synchronization.