OpenWrt/LEDE Project

  • Status Assigned
  • Percent Complete
    0%
  • Task Type Build Failure
  • Category Kernel
  • Assigned To
    Florian Fainelli
  • Operating System All
  • Severity Medium
  • Priority Very Low
  • Reported Version All
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by Mirko Vogt - 12.02.2017

FS#503 - Build fails with CONFIG_KERNEL_GIT_CLONE_URI beig set

When specifying 

CONFIG_KERNEL_GIT_CLONE_URI

a clean build fails, as the system assumes a already downloaded/cloned/packed linux-source is present in dl/ which on a freshly checked out openwrt/lede source isn’t the case yet, when 

toolchain/kernel-headers

is about to be built.

The build error looks like: 

make[3]: Entering directory `/build/lede.git/toolchain/kernel-headers'
zcat /build/lede.git/dl/linux-4.4.42.tar.gz | tar -C /build/lede.git/build_dir/toolchain-arm_cortex-a9+neon_gcc-6.3.0_glibc-2.24_eabi -xf -
gzip: /build/lede.git/dl/linux-4.4.42.tar.gz: No such file or directory
tar: This does not look like a tar archive
tar: Exiting with failure status due to previous errors

The issue apparently is located in 

include/kernel-defaults.mk

, line 53ff:: 

  ifeq ($(strip $(CONFIG_KERNEL_GIT_CLONE_URI)),"")
    define Kernel/Prepare/Default
        zcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
        $(Kernel/Patch)
        $(if $(QUILT),touch $(LINUX_DIR)/.quilt_used)
    endef
  else
    define Kernel/Prepare/Default
        zcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
    endef
  endif

For the package 

kernel-headers

it just tries to access the not-yet downloaded/cloned/packed linux kernel source archive.

Mirko Vogt commented on 12.02.2017 15:26
include/kernel-defaults.mk

doesn't seem the right place to dig, as either way - independendat of `CONFIG_KERNEL_GIT_CLONE_URI` being set or not, the tarball is assumed already being there.

My next candidate is the following line in `toolchain/kernel-headers/Makefile`: 

PKG_SOURCE_URL:=$(LINUX_SITE)

LINUX_SITE gets set in include/kernel-defaults.mk and *only* if `CONFIG_KERNEL_GIT_CLONE_URI` is unset.

The regular kernel build takes this into account, while the kernel-headers-Makefile apparently doesn't.

In include/kernel-build.mk it states:

define BuildKernel
  $(if $(QUILT),$(Build/Quilt))
  $(if $(LINUX_SITE),$(call Download,kernel))
  $(if $(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),$(call Download,git-kernel))

while the kernel-headers-Makefile only relies on LINUX_SITE being set.

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