[TYPO3] way to create default setup for extension

[Stano Paška]

Hi.

Which is the recommended way to create default constants and setup for
extension?

1. in ext_typoscript_setup.txt
2. in static template pi1/static/setup.txt
3. in ext_localconf.php t3lib_extMgm::addTypoScript($_EXTKEY,'setup','...

Thanks.

Stano Paška.