ID:               27796
 User updated by:  wjtregaskis at students dot latrobe dot edu dot au
 Reported By:      wjtregaskis at students dot latrobe dot edu dot au
 Status:           Open
 Bug Type:         Documentation problem
 Operating System: MacOS 10.3.3
 PHP Version:      4.3.4
 New Comment:

As an extension of this problem, it's also true the same 

error code (6, ENXIO) is returned if you try to execute 

an application which connects to the WindowServer (under 

Mac OS X).  Only the console & root users may do this, 

which usually [and hopefully] excludes www, which seems 

to be the user that is used when executing via exec().


Previous Comments:
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[2004-03-31 07:23:16] [EMAIL PROTECTED]

So it's something for the docs.

------------------------------------------------------------------------

[2004-03-31 07:21:38] wjtregaskis at students dot latrobe dot edu dot
au

P.S.  XCode is Apple's universal GUI IDE.  Zerolink is 

(so far as I've seen) too difficult to allow for in a 

normal makefile, so non-XCode projects are exempt from 

this problem.

------------------------------------------------------------------------

[2004-03-31 07:20:08] wjtregaskis at students dot latrobe dot edu dot
au

Just to clarify, Zerolink is Apple's system for linking 

object files within an executable at runtime.  It's on 

by default in XCode.  The premise is that for large apps 

you can run them immediately after compilation, linking 

on-the-fly only the [small, ideally] fraction of them 

needed.  The side-effect of this is that these apps have 

to be launched in some sort of special environment to 

facilitate this runtime linking, so you can't execute 

them normally.



I guess it would be possible to execute such apps so 

that they do work [by extending the exec code], but I 

don't see a need - it's easy enough to just compile with 

Zerolink off (the "old fashioned way") and it's more the 

fact that this can catch you out and is terrible to 

debug that concerns me.

------------------------------------------------------------------------

[2004-03-31 07:11:50] [EMAIL PROTECTED]

Please give a short summary of what zero-link is, and why

it is broken.

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[2004-03-31 06:27:09] wjtregaskis at students dot latrobe dot edu dot
au

Description:
------------
This isn't a php bug as such, more a warning to other 

Mac php hackers - any CLI apps built with Zerolink 

enabled cannot be launched by any of php's program 

control commands - they all return the result '6'.  The 

solution of course is to rebuild the apps with Zerolink 

off.



This is worth noting somewhere on the php pages, as it's 

an incredibly hard bug to track down - it took me 4 

hours, and that's with the hunch that Zerolink would be 

the culprit (given the myriad of other similar problems 

it causes).



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