Using MySQL on (headless) Linux

Richard Gaskin ambassador at
Tue Feb 2 13:58:52 EST 2021

LC Server doesn't handle externals, so for that we need a standalone?

I think I'm missing something.

  Richard Gaskin
  Fourth World Systems

Mark Waddingham wrote:
> On 2021-02-01 22:25, Ben Rubinstein via use-livecode wrote:
>> Undesirable things found:
>> 1. I've not found how to access externals (in this case the database
>> library) without explicitly setting the 'externals' property of the
>> stack to a (generally unreliably) full path before the stack is saved.
>> 3. revSetDatabaseDriverPath is required even when the drivers are in
>> the standard location inside the app 'bundle'.
>> I'll report (2) and (3) formally when I've done a bit more
>> investigation. I'd still love to know what I'm doing wrong, in
>> relation to (1).
> Please don't - as neither are bugs :)
> The standalone engine inside the runtime folders in the IDE install is 
> just a bare engine.
> In community you can certainly run the bare engine without building a 
> standalone but as you have discovered it is just what it is - a bare 
> engine, it knows nothing of externals, database drivers, widgets, script 
> libraries or anything else.
> If you want a headless (community) engine which has dependencies then 
> all you have to do is deploy a standalone with a launcher stack embedded 
> into it.
> The launcher stack should have the inclusions you want configured for 
> it, and it can just run the stack you pass as an argument on the 
> command-line.
> Doing it this way, it means the standalone builder will take care to 
> ensure all the 'inclusions' you set are present and configured correctly 
> (including widgets, externals and script libraries).
> You only need to rebuild the standalone if your inclusion requirements 
> change, or you want to change engine version.
> Warmest Regards,
> Mark.
> P.S. In regards to (1) the trick is to do this:
> ```
> set the externals of the templateStack to <external files list>
> create invisible stack "Externals" -- or any name you like
> inser the script of it into back
> reset the templateStack
> ```
> This allows you to compute the external paths at runtime when the engine 
> starts (e.g. by using the engine folder, or the filename of the stack 
> and computing the paths).
> -- 
> Mark Waddingham ~ mark at ~
> LiveCode: Everyone can create apps

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