16.10.2017 00:44, Hauke Mehrtens:
Changing the order of the devices fixes the build problem seen by the
build bot. I do not understand why this is making any difference at all,
this is probably only hiding a different bug.

Signed-off-by: Hauke Mehrtens <ha...@hauke-m.de>
---

Without this patch I am getting the following error message:

cat 
/home/hauke/openwrt/lede/build_dir/target-arm_arm926ej-s_musl_eabi/linux-at91_legacy/tmp/lede-at91-legacy-tny_a9260-squashfs-factory.bin.dtb
 >> 
/home/hauke/openwrt/lede/build_dir/target-arm_arm926ej-s_musl_eabi/linux-at91_legacy/tmp/lede-at91-legacy-tny_a9260-squashfs-factory.bin
dd 
if=/home/hauke/openwrt/lede/build_dir/target-arm_arm926ej-s_musl_eabi/linux-at91_legacy/tmp/lede-at91-legacy-tny_a9260-squashfs-factory.bin
 
of=/home/hauke/openwrt/lede/build_dir/target-arm_arm926ej-s_musl_eabi/linux-at91_legacy/tmp/lede-at91-legacy-tny_a9260-squashfs-factory.bin.new
 bs= conv=sync
dd: invalid number: ''
Makefile:74: recipe for target 
'/home/hauke/openwrt/lede/build_dir/target-arm_arm926ej-s_musl_eabi/linux-at91_legacy/tmp/lede-at91-legacy-tny_a9260-squashfs-factory.bin'
 failed
make[5]: *** 
[/home/hauke/openwrt/lede/build_dir/target-arm_arm926ej-s_musl_eabi/linux-at91_legacy/tmp/lede-at91-legacy-tny_a9260-squashfs-factory.bin]
 Error 1
make[5]: Leaving directory '/home/hauke/openwrt/lede/target/linux/at91/image'
Makefile:24: recipe for target 'install' failed

Hey Hauke,

your issue is:

define Device/Default
  DTB_SIZE :=
endef

define Device/production-dtb
  $(Device/production)
  $(Device/dtb)
  DTB_SIZE := 128k
  IMAGE/factory.bin := append-dtb | pad-to $$$$(DTB_SIZE) \
          | append-kernel | pad-to $$$$(KERNEL_SIZE) | append-ubi
endef

The pad-to $$$$(DTB_SIZE) references the DTB_SIZE variable from Device/Default instead of Device/production-dtb.

The best would be to move DTB_SIZE := 128k to Device/Default (which is safe since we don't have different DTB_SIZE values). Another way to fix the issue is to change the pad-to parameter to pad-to $$(DTB_SIZE).

But I've to admit, I fail to see why it works as intended if you change the order of the build code and it's most likely the reason why I didn't noticed the issue at the time I merged c2f052acaeb480e89d3ce39c47f49ad16b3464ac.

Mathias

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