Stefano, On Aug 21, 2013, at 12:13 AM, Stefano Babic wrote:
> Hi Larry, > > On 21/08/2013 07:27, Larry Baker wrote: >> I tried to add the ntp package to generic-armv5te core-image-basic by adding >> >> IMAGE_INSTALL_append = " chkconfig ntp" >> >> to my Yocto/ELDK conf/local.conf. >> >> bitbake failed because no recipe provides 'ntp'. >> > > That is right - Yocto / ELDK do not include a receipe for NTP, but the > OE receipe can be easy added. > >> I saw chkconfig and ntp in the list of ELDK target packages at >> http://www.denx.de/wiki/view/DULG/ELDKPackages#Section_3.9.2. > > The list is related to the old ELDK-4.x, see the ancient gcc versions. > All packages are obsolete nowadays. And yes, ELDK-4.x had a rpm package > for NTP. > >> I thought there might be a chance that Yocto/ELDK had support for building >> both. No? >> >> What is the recommended method in Yocto/ELDK to synchronize with an NTP >> server or other time reference? > > NTP or SNTP is IMHO always the first choice. I determined that the standard NTP package was superior to the other choice (can't remember) when I worked with uClinux. But, i have to say, some of the code was a bit sloppy, at least the command-line tools. I had trouble with stack overflows/crashes on an MMU-less uClinux system. I do not know what SNTP is. I'll try searching the web for it. What is your opinion of the two? > Check the receipe here: > > https://github.com/openembedded/meta-oe/tree/master/meta-networking/recipes-support/ntp > I found a gumstix-yocto copy of the meta-oe recipe and then the original OE version. I could not figure out how to download just the ntp branch from the git browser view. The checkout procedure for the OE git tree was different from a "git clone" -- it used yet another repository tool. Is there an easier way to grab this stuff? *** I just browsed again and found this page: https://github.com/openembedded/meta-oe.git. It looks like I can obtain a zip download of the meta-oe branch. I'll give that a try and post an update. *** > You can add it flawlessly to your ELDK environment. I was going to stick the ntp branch under meta-eldk/recipes-support. I hoped after that bitbake would find the recipe for ntp automatically. Is that true? Or, do I have to either 1) place the ntp folder somewhere else, or 2) do something different than IMAGE_INSTALL_append = " chkconfig ntp"? If I am successful to download all of meta-oe, should I merge that with the ELDK git, e.g., at the same place in the ELDK tree as meta-eldk? Or, should I only do that with the ftp folder? I don't want to ask for trouble. I don't quite understand yet how recipes are located/overloaded. And, like all languages/systems with inheritance, you are stuck with tracking down all the ancestral behaviors and context. > Best regards, > Stefano Babic > > -- > ===================================================================== > DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: [email protected] > ===================================================================== Thank you for your help. Larry Baker US Geological Survey 650-329-5608 [email protected] _______________________________________________ eldk mailing list [email protected] http://lists.denx.de/mailman/listinfo/eldk
