On 2011?12?12? 19:40, Otavio Salvador wrote:
> On Mon, Dec 12, 2011 at 09:28, Xiaofeng Yan 
> <xiaofeng.yan@windriver.com <mailto:xiaofeng.yan@windriver.com>> wrote:
>
>     From: Xiaofeng Yan <xiaofeng.yan@windriver.com
>     <mailto:xiaofeng.yan@windriver.com>>
>
>     This file can make an image to run gtk over directfb.
>
>
> I think this ought to be done on core-image-gtk not a specific one for 
> directfb as it depends on a distro feature and you can't just generate 
> an image with this, if the distro has no directfb feature enabled.
> -- 
> Otavio Salvador                             O.S. Systems
> E-mail: otavio@ossystems.com.br <mailto:otavio@ossystems.com.br> 
> http://www.ossystems.com.br
> Mobile: +55 53 9981-7854 http://projetos.ossystems.com.br
>
>
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I can add a mechanism to inform user to add "gtk-directfb" to 
DISTRO_FEATURES by adding like the following steps
$touch meta/class/gtk-directfb.bbclass
$cat  meta/class/gtk-directfb.bbclass
python () {
     import os
     import signal
     packages = d.getVar('DISTRO_FEATURES', 1).split()
     for pkg in packages:
         if pkg == "x11":
             print("Please remove x11 from DISTRO_FEATURES, use 
\"gtk-directfb\" instead of it\n")
             pid = os.getpid()
             os.kill(pid,signal.SIGCLD) # it could have some issues
}

$cat core-image-gtk-directfb.bb
LICENSE = "MIT"
PR="r0"

inherit gtk-directfb

LIC_FILES_CHKSUM = 
"file://${COREBASE}/LICENSE;md5=3f40d7994397109285ec7b81fdeb3b58 \
                     
file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"


DEPENDS += "task-core-gtk-directfb"

RDEPENDS_${PN} += " \
     task-core-gtk-directfb-base \
     "

inherit core-image

IMAGE_INSTALL += "\
     ${POKY_BASE_INSTALL} \
     task-core-basic \
     module-init-tools \
     task-core-gtk-directfb-base \
"
Do you have any comment about above method ?

Thanks
Yan