[TYPO3-core] RFC #15075: feature: make a pre-check for required php-extensions

[Jigal van Hemert]

Hi,

Xavier Perseguers wrote:
> I don't remember the whole thread but basically there is already a list 
> of required _db_ modules within DBAL's hook into install tool. As long 
> as the list of required ext may be overriden by DBAL, it's fine to have 
> mysql as requirement in Core.

Can you suggest a place in class.tx_install.php to put the list so they 
can be overriden by DBAL?
Note that this check must be a very early check in the 123 installer 
because it should be done before too much functionality is needed!

> Best would be to have a concept of "these extensions are all required" 
> and "at least one of following set of extensions is required". This 
> would allow DBAL to say one DB driver is required or in Core either 
> mbstring or iconv is required.

No problem, will add support for that in the next version. I think that 
for this simple test it will be enough to have an array of:
- strings: this is a required PHP extension
- array of strings: this is a list of which at least one must be present

Example for construction:
array( 'filter', 'gd', array('mbstring', 'iconv'), ....)

-- 
Jigal van Hemert
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