From: Ovidiu Panait <[email protected]> Currently DTC_FLAGS kernel makefile parameter can be specified directly on the command line by adding it to KERNEL_EXTRA_ARGS. However, this prevents scripts/Makefile.lib logic from appending flags that silence dtc warnings (all assignments done from within a makefile, to a variable specified on the command line, are ignored).
Because of this, the do_compile log is cluttered with dtc warnings that should only be printed when compiling with W="123": ... /soc: node has a reg or ranges property, but no unit name /soc/gpu: missing or empty reg/ranges property /soc/firmware/gpio: missing or empty reg/ranges property ... To fix this, introduce the dedicated KERNEL_DTC_FLAGS variable to hold dtc flags and export DTC_FLAGS in the environment before generating the dtbs (make allows "+=" operations on variables that come from the environment, so the warnings are silenced properly). Signed-off-by: Ovidiu Panait <[email protected]> Signed-off-by: Richard Purdie <[email protected]> (cherry picked from commit 063b5de86624a42b0aa784db6dddc7552a6dee7f) Signed-off-by: Steve Sakoman <[email protected]> --- meta/classes/kernel-devicetree.bbclass | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/meta/classes/kernel-devicetree.bbclass b/meta/classes/kernel-devicetree.bbclass index 81dda8003f..d4f8864200 100644 --- a/meta/classes/kernel-devicetree.bbclass +++ b/meta/classes/kernel-devicetree.bbclass @@ -9,6 +9,9 @@ FILES_${KERNEL_PACKAGE_NAME}-image-zimage-bundle = "/${KERNEL_IMAGEDEST}/zImage- # Generate kernel+devicetree bundle KERNEL_DEVICETREE_BUNDLE ?= "0" +# dtc flags passed via DTC_FLAGS env variable +KERNEL_DTC_FLAGS ?= "" + normalize_dtb () { dtb="$1" if echo $dtb | grep -q '/dts/'; then @@ -50,6 +53,10 @@ do_configure_append() { } do_compile_append() { + if [ -n "${KERNEL_DTC_FLAGS}" ]; then + export DTC_FLAGS="${KERNEL_DTC_FLAGS}" + fi + for dtbf in ${KERNEL_DEVICETREE}; do dtb=`normalize_dtb "$dtbf"` oe_runmake $dtb CC="${KERNEL_CC} $cc_extra " LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS} -- 2.25.1
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