Re: [microblaze-uclinux] zeroconf/dhcp

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Hi Jim,

Jim Van Vorst wrote:


> I've been looking into getting IPv4 link local support running.  I.e. I
> want to boot with an autoconfig ip address (169.254/16) if I boot up
> with no IP address and no dhcp reply. I see that user/dhcpcd has support
> for this.  It looks like user/dhcpcd-new does not.  But if I enable
> dhcpcd and disable dhcpcd-new then the build complains because of this
> in common.mak:
> 
> ifdef CONFIG_SYSTEM_USE_DHCP
>    ifndef CONFIG_USER_DHCPCD_NEW_DHCPCD
>        $(error A dynamic IP address was requested, but dhcpcd-new is not
> enabled in your vendor/user settings.)
>    endif
> endif
> 
> Does this mean that dhcpcd is not supported?  If not, how do I get
> link-local support under petalinux?

The PetaLinux romfs build scripts in common.mak attempt to automate
standard configurations, but in doing so you can bump into issues like
you report.  It's a simple error check to make sure that a dhcp client
is built, if DHCP is desired by the user.

The fix here might be something like

ifdef CONFIG_USER_CHCPCD_NEW_DHCPCD
  USING_DHCP=1
enndif

ifdef CONFIG_USER_DHCPCD_DHCPCD
  USING_DHCP=1
endif

ifdef CONFIG_SYSTEM_USE_DHCP
   ifndef USING_DHCP
   $(error ...
    endif
endif

Double check the CONFIG_USER setting associated with the straight dhcp
client.

Regards,

John

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