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linux: handle empty BR2_LINUX_KERNEL_IMAGE_TARGET_NAME situation

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When BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM=y,
BR2_LINUX_KERNEL_IMAGE_TARGET_NAME should be set or the build will
fail. Instead of miserably failing the build, let's catch this earlier
and warn the user in a more informative way.

Related to:

  http://autobuild.buildroot.net/results/1d104a051c83bb31e98565369a2ec7badfa21eca/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit cb4f11a696)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Thomas Petazzoni 2024-09-15 14:37:28 +02:00 committed by Peter Korsgaard
parent a1bf4fa4bc
commit 79db543d0a
1 changed files with 4 additions and 0 deletions
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4
linux/linux.mk
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@ -641,6 +641,10 @@ $(error No kernel device tree source specified, check your \
BR2_LINUX_KERNEL_INTREE_DTS_NAME / BR2_LINUX_KERNEL_CUSTOM_DTS_PATH settings)
endif
ifeq ($(BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM):$(call qstrip,$(BR2_LINUX_KERNEL_IMAGE_TARGET_NAME)),y:)
$(error No image name specified in BR2_LINUX_KERNEL_IMAGE_TARGET_NAME despite BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM=y)
endif
endif # BR_BUILDING
$(eval $(kconfig-package))