On Wed, 22 Aug 2018 10:13:33 -0400
Bruce Ashfield <bruce.ashfield@windriver.com> wrote:

> On 08/22/2018 10:05 AM, Lukasz Majewski wrote:
> > Hi Bruce,
> >   
> >> On 08/22/2018 09:40 AM, Lukasz Majewski wrote:  
> >>> Without this patch it happens that do_populate_recipe_sysroot is
> >>> called just before do_compile (on multi core build machines).
> >>> This is way too late as the .config generated in
> >>> do_kernel_configme() is already broken.
> >>>
> >>> The problem is that do_kernel_configme() calls native's
> >>> merge_config.sh script which may call bison and arm-linux-*-gcc to
> >>> compile kconfig infrastructure to create base .config
> >>> (scripts/kconfig/conf  --allnoconfig Kconfig.)
> >>>
> >>> It turns out that we only got above binaries after
> >>> do_prepare_recipe_sysroot() is called.
> >>> If those binaries are not available, the merge_config.sh do not
> >>> generate base .config and without any error produces
> >>> malfunctioned .config. The build process continues and as a result
> >>> broken kernel is compiled.
> >>>
> >>> To reproduce:
> >>>
> >>> bitbake -c cleansstate virtual/kernel
> >>> bitbake -c kernel_metadata -v virtual/kernel
> >>> bitbake -c do_kernel_configme -v virtual/kernel
> >>> (one shall see broken .config in ${B}/.config)
> >>> bitbake -c do_populate_sysroot -v virtual/kernel
> >>> bitbake -c do_compile -v virtual/kernel
> >>>
> >>> (Poky) SHA1: bb91b2ae3ee5cf108aa2f9b78abb14d5aa00831d
> >>>
> >>> Signed-off-by: Lukasz Majewski <lukma@denx.de>
> >>> ---
> >>>    meta/classes/kernel-yocto.bbclass | 1 +
> >>>    1 file changed, 1 insertion(+)
> >>>
> >>> diff --git a/meta/classes/kernel-yocto.bbclass
> >>> b/meta/classes/kernel-yocto.bbclass index 4ac3a39e47..19a3f2bc46
> >>> 100644 --- a/meta/classes/kernel-yocto.bbclass
> >>> +++ b/meta/classes/kernel-yocto.bbclass
> >>> @@ -276,6 +276,7 @@ do_kernel_metadata[depends] =
> >>> "kern-tools-native:do_populate_sysroot"
> >>> do_validate_branches[depends] =
> >>> "kern-tools-native:do_populate_sysroot" do_kernel_configme[dirs]
> >>> += "${S} ${B}" +do_kernel_configme[depends] +=
> >>> "virtual/kernel:do_prepare_recipe_sysroot"  
> >>
> >> On a closer look .. what branch is this from ? We already have a
> >> change that triggered breakage on 4.17+ that should fix this.
> >>
> >> i.e. commit ff1bdd75d50f0ebac3d599e461685ace29559a82 in oe-core,
> >> adds:
> >>
> >> ----------
> >>
> >>    do_kernel_metadata[depends] =
> >> "kern-tools-native:do_populate_sysroot"
> >> do_validate_branches[depends] =
> >> "kern-tools-native:do_populate_sysroot"
> >>
> >> +do_kernel_configme[depends] +=
> >> "virtual/${TARGET_PREFIX}binutils:do_populate_sysroot"
> >> +do_kernel_configme[depends] +=
> >> "virtual/${TARGET_PREFIX}gcc:do_populate_sysroot"
> >> +do_kernel_configme[depends] += "bc-native:do_populate_sysroot
> >> bison-native:do_populate_sysroot"
> >>    do_kernel_configme[dirs] += "${S} ${B}"
> >>    do_kernel_configme() {
> >>
> >> ----------
> >>
> >> Which I don't see in the context of your patch.
> >>  
> > 
> > I do use poky as in the commit message.  
> 
> Yes, I checked that .. but that isn't a useful part of a patch
> to oe-core.
> 
> The kernel-yocto bbclass in that context is not the one in master, and
> if I run a --contains on that commit ID, I don't get an active
> branch.

I might have misunderstood something... apparently.

The changes which I did were to:

poky/meta/classes/kernel-yocto.bbclass

Is this a wrong place to add the fix?

> 
> So the patch as it stands, cannot be applied to master (and I
> also checked master-next in case something snuck in that I
> missed) of oe-core or poky, so there's no way to work with it.
> 
> Bruce
> 
> > 
> > Regarding the kernel - I do have my own recipe;
> > inherit kernel
> > 
> > require
> > recipes-kernel/linux/linux-yocto.inc
> > 
> > 
> > And then I do have:
> > COMPATIBLE_MACHINE_display5 = "display5"
> > 
> > KBUILD_DEFCONFIG_pn-linux-yocto-custom_display5 =
> > "imx6q_display5_defconfig"
> > 
> > As the board is in mainline I just point to Linus tree.
> >   
> >> Bruce
> >>  
> >>>    do_kernel_configme() {
> >>>    	set +e
> >>>    
> >>>      
> >>  
> > 
> > 
> > 
> > 
> > Best regards,
> > 
> > Lukasz Majewski
> > 
> > --
> > 
> > DENX Software Engineering GmbH,      Managing Director: Wolfgang
> > Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell,
> > Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email:
> > wd@denx.de 
> 




Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de