[syslinux] Syslinux 5 (i)pxelinux.0 unnecessary PATH requests

[Shao Miller]

On 12/12/2012 11:17, Shao Miller wrote:
> On 12/12/2012 10:48, Arends, R.R. wrote:
>>
>> good idea, but imho this still involves in making extra requests to
>> the backend and rather 'hacky' chain->chain->chain stuff to make it
>> harder to understand for my fellow cowokers.
>>
>> if anyone can point me to the right source files to edit and hardcode
>> the path, i would really appreciate it. i know thats also hacky, but
>> thats easy to do since we already have some custom patches which we
>> always apply.
>
> As mentioned elsethread, you are overriding the path by using 210.  That
> is to say, you are setting the current working directory.  The current
> working directory is used for opening files with relative paths (in a
> few different operating systems, even).  If you don't want to do this,
> don't do it. :)
>

For example, there is no reason for you to set 210 since you can 
hard-code the iPXE script, which you are already doing:

   #!ipxe
   #...
   # Do not set 210
   set filename http://boot.xxx.nl/mods/pxelinux.0
   chain ${filename}

Then ldlinux.c32 is searched-for where pxelinux.0 lives.

- Shao Miller