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Subject: Re: [PATCH v2] linux-yocto: build out-of-tree drivers with SDK
To: openembedded-core@lists.openembedded.org
From: "Vincent Davis Jr" <vince@underview.tech>
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Date: Mon, 19 May 2025 17:36:13 -0700
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On Thu, May 15, 2025 at 12:58 PM, Bruce Ashfield wrote:

>=20
> KBUILD_USERHOSTCFLAGS

Hello this patch may be dropped. May just have been an issue with the way I=
 build
the standard SDK in my setup. Cloning poky and building bellow recipe gener=
ates
a standard SDK who's kernel source tree can be prepared for out-of-tree dri=
ver
development. Should of tried this first.

>=20
> cat >> recipes-sdk/images/base-devel-sdk.bb <<EOF
> SUMMARY =3D "Some Development Standard SDK"
> LICENSE =3D "MIT"
> inherit populate_sdk
> TOOLCHAIN_TARGET_TASK +=3D "kernel-devsrc"
> EOF
>=20

>=20
> KBUILD_USERHOSTCFLAGS=3D"${KCFLAGS}" make -e -C
> sysroots/core2-64-poky-linux/lib/modules/6.12.27-yocto-standard/build/
> modules_prepare
>=20

Appears to work for me

Thanks,
Vincent

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<div>On Thu, May 15, 2025 at 12:58 PM, Bruce Ashfield wrote:</div>
<div>
<blockquote>KBUILD_USERHOSTCFLAGS</blockquote>
</div>
<div>Hello this patch may be dropped. May just have been an issue with the =
way I build</div>
<div>the standard SDK in my setup. Cloning poky and building bellow recipe =
generates</div>
<div>a standard SDK who's kernel source tree can be prepared for out-of-tre=
e driver</div>
<div>development. Should of tried this first.</div>
<div>&nbsp;</div>
<div>
<blockquote>
<div>cat &gt;&gt; recipes-sdk/images/base-devel-sdk.bb &lt;&lt;EOF<br />SUM=
MARY =3D "Some Development Standard SDK"<br />LICENSE =3D "MIT"</div>
<div>inherit populate_sdk</div>
<div>TOOLCHAIN_TARGET_TASK +=3D "kernel-devsrc"<br />EOF</div>
</blockquote>
</div>
<blockquote>
<div>KBUILD_USERHOSTCFLAGS=3D"${KCFLAGS}" make -e -C sysroots/core2-64-poky=
-linux/lib/modules/6.12.27-yocto-standard/build/ modules_prepare</div>
</blockquote>
<div>&nbsp;</div>
<div>Appears to work for me</div>
<div>&nbsp;</div>
<div>Thanks,</div>
<div>Vincent</div>

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