CRM-19575 - CRM_Utils_System_Joomla - Fix warning. Define JDEBUG

[totten]

Background

When running cv en <extname> on Joomla, there are repeated warnings, "Use
of undefined constant JDEBUG", and each includes a backtrace. This is hard
to read.

The bug appears to affect backend scripts; it's discussed with a solution in:

joomla/joomla-cms#11512 (comment)

Before

CRM_Utils_System_Joomla::loadBootStrap() loads various config files.
However, these may or may not set JDEBUG.

After

CRM_Utils_System_Joomla::loadBootStrap() defensively sets JDEBUG if no
other part of the bootstrap has done so.

---

• CRM-20932: Joomla CLI and extern display warning about JDEBUG

---

• CRM-19575: Cron jobs on Joomla triggers "Use of undefined constant JDEBUG"

[totten]

Pinging Joomla experts for review: any 👍 or 👎 from @thoni56, @lcdservices, @brucew2013 ?

[lcdservices]

just ran into this with an upgrade. confirming that this fixed the issue.

[totten]

Thanks @lcdservices . Glad it works for you too. I'm flagging merge ready.

I'll wait a day to merge in case any watchers report problems.

[brucew2013]

Perhaps there is something to glean from in this Joomla support thread https://forum.joomla.org/viewtopic.php?t=902641

Also, some report missing files after Joomla update(s).

[thoni56]

@brucew2013, what exactly do you mean is the relevant part of that thread about a failed update of Joomla?

[brucew2013]

There are several references that Joomla updates may be the culprit. There isn't any thing specific codewise but just folks experiencing this after certain updates. Again, perhaps this is irrelevant but the only reference I can find regarding Joomla.