On Mon, Feb 9, 2026 at 7:56 AM Ross Burton via lists.openembedded.org
<[email protected]> wrote:

> The kernel has supported setting an alternative binary for pkg-config
> with a variable since 5.19 (in 2022[1]) and we set that to
> pkg-config-native, so there is no longer any need to also manually set
> the PKG_CONFIG_* variables.
>
> The relevant commit was backported and is present in 5.15.91 onwards,
> but is not yet in 5.10.x.
>
>
Ross and I had spoken about this before he sent the series, no
concerns on my end.

Acked-by: Bruce Ashfield <[email protected]>



> [1] linux d5ea4fece450 ("kbuild: Allow kernel installation packaging to
> override pkg-config")
>
> Signed-off-by: Ross Burton <[email protected]>
> ---
>  meta/classes-recipe/kernel.bbclass        | 9 ---------
>  meta/recipes-kernel/linux/linux-yocto.inc | 7 ++-----
>  2 files changed, 2 insertions(+), 14 deletions(-)
>
> diff --git a/meta/classes-recipe/kernel.bbclass
> b/meta/classes-recipe/kernel.bbclass
> index b43b4ff4fb..1ebf027281 100644
> --- a/meta/classes-recipe/kernel.bbclass
> +++ b/meta/classes-recipe/kernel.bbclass
> @@ -251,7 +251,6 @@ KERNEL_EXTRA_ARGS ?= ""
>  EXTRA_OEMAKE += ' CC="${KERNEL_CC}" LD="${KERNEL_LD}"
> OBJCOPY="${KERNEL_OBJCOPY}" STRIP="${KERNEL_STRIP}"'
>  EXTRA_OEMAKE += ' HOSTCC="${BUILD_CC}" HOSTCFLAGS="${BUILD_CFLAGS}"
> HOSTLDFLAGS="${BUILD_LDFLAGS}" HOSTCPP="${BUILD_CPP}"'
>  EXTRA_OEMAKE += ' HOSTCXX="${BUILD_CXX}" HOSTCXXFLAGS="${BUILD_CXXFLAGS}"'
> -# Only for newer kernels (5.19+), native pkg-config variables are set for
> older kernels when building kernel and modules
>  EXTRA_OEMAKE += ' HOSTPKG_CONFIG="pkg-config-native"'
>
>  KERNEL_ALT_IMAGETYPE ??= ""
> @@ -364,10 +363,6 @@ KERNEL_DEBUG_TIMESTAMPS ??= "0"
>  kernel_do_compile() {
>         unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
>
> -       # setup native pkg-config variables (kconfig scripts call
> pkg-config directly, cannot generically be overriden to pkg-config-native)
> -       export
> PKG_CONFIG_LIBDIR="${STAGING_LIBDIR_NATIVE}/pkgconfig:${STAGING_DATADIR_NATIVE}/pkgconfig"
> -       export PKG_CONFIG_SYSROOT_DIR=""
> -
>         if [ "${KERNEL_DEBUG_TIMESTAMPS}" != "1" ]; then
>                 # kernel sources do not use do_unpack, so
> SOURCE_DATE_EPOCH may not
>                 # be set....
> @@ -418,10 +413,6 @@ addtask transform_kernel after do_compile before
> do_install
>  do_compile_kernelmodules() {
>         unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
>
> -       # setup native pkg-config variables (kconfig scripts call
> pkg-config directly, cannot generically be overriden to pkg-config-native)
> -       export
> PKG_CONFIG_LIBDIR="${STAGING_LIBDIR_NATIVE}/pkgconfig:${STAGING_DATADIR_NATIVE}/pkgconfig"
> -       export PKG_CONFIG_SYSROOT_DIR=""
> -
>         if [ "${KERNEL_DEBUG_TIMESTAMPS}" != "1" ]; then
>                 # kernel sources do not use do_unpack, so
> SOURCE_DATE_EPOCH may not
>                 # be set....
> diff --git a/meta/recipes-kernel/linux/linux-yocto.inc
> b/meta/recipes-kernel/linux/linux-yocto.inc
> index d57c1aae25..4e230d405a 100644
> --- a/meta/recipes-kernel/linux/linux-yocto.inc
> +++ b/meta/recipes-kernel/linux/linux-yocto.inc
> @@ -88,9 +88,6 @@ do_kernel_configme[depends] +=
> '${@bb.utils.contains("KERNEL_DEBUG", "True", "pa
>  EXTRA_OEMAKE += '${@bb.utils.contains("KERNEL_DEBUG", "True", "",
> "PAHOLE=false", d)}'
>
>  do_devshell:prepend() {
> -    # setup native pkg-config variables (kconfig scripts call pkg-config
> directly, cannot generically be overriden to pkg-config-native)
> -    d.setVar("PKG_CONFIG_PATH", "")
> -    d.setVar("PKG_CONFIG_LIBDIR",
> "${STAGING_LIBDIR_NATIVE}/pkgconfig:${STAGING_DATADIR_NATIVE}/pkgconfig")
> -    d.setVarFlag("PKG_CONFIG_SYSROOT_DIR", "unexport", "1")
> -    d.appendVar("OE_TERMINAL_EXPORTS", " PKG_CONFIG_PATH
> PKG_CONFIG_LIBDIR PKG_CONFIG_SYSROOT_DIR")
> +    d.setVar("HOSTPKG_CONFIG", "pkg-config-native")
> +    d.appendVar("OE_TERMINAL_EXPORTS", " HOSTPKG_CONFIG")
>  }
> --
> 2.43.0
>
>
> 
>
>

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