[OpenWrt-Devel] Build errors when activating the Device Tree flag for Raspberry Pi

[Hauke Mehrtens]

On 07/12/2015 06:44 AM, Michael Neurohr wrote:
> Hi,
> 
> I'm trying to activate the Device Tree for Raspberry Pi builds.
> 
> Therefore I changed the flag
> 
> # CONFIG_BCM2709_DT is not set
> to
> CONFIG_BCM2709_DT=y
> 
> in
> 
> /home/mine/gitrepos/openwrt2/target/linux/brcm2708/bcm2709/config-default
> and
> /home/mine/gitrepos/openwrt2/target/linux/brcm2708/bcm2708/config-default
> 
> When building for BRCM2709/08 I'm getting the error
> 
> ==================================================================
>   LD      init/built-in.o
> drivers/built-in.o: In function `of_get_mac_address_mtd':
> /home/mine/gitrepos/openwrt2/build_dir/target-arm_cortex-a7+vfp_musl-1.1.10_eabi/linux-brcm2708_bcm2709/linux-3.18.17/drivers/of/of_net.c:106:
> undefined reference to `get_mtd_device_nm'
> /home/mine/gitrepos/openwrt2/build_dir/target-arm_cortex-a7+vfp_musl-1.1.10_eabi/linux-brcm2708_bcm2709/linux-3.18.17/drivers/of/of_net.c:110:
> undefined reference to `mtd_read'
> /home/mine/gitrepos/openwrt2/build_dir/target-arm_cortex-a7+vfp_musl-1.1.10_eabi/linux-brcm2708_bcm2709/linux-3.18.17/drivers/of/of_net.c:111:
> undefined reference to `put_mtd_device'
> make[5]: *** [vmlinux] Error 1
> make[5]: Leaving directory
> `/home/mine/gitrepos/openwrt2/build_dir/target-arm_cortex-a7+vfp_musl-1.1.10_eabi/linux-brcm2708_bcm2709/linux-3.18.17'
> 
> make[4]: ***
> [/home/mine/gitrepos/openwrt2/build_dir/target-arm_cortex-a7+vfp_musl-1.1.10_eabi/linux-brcm2708_bcm2709/linux-3.18.17/.image]
> Error 2
> make[4]: Leaving directory
> `/home/mine/gitrepos/openwrt2/target/linux/brcm2708'
> make[3]: *** [install] Error 2
> make[3]: Leaving directory `/home/mine/gitrepos/openwrt2/target/linux'
> make[2]: *** [target/linux/install] Error 2
> make[2]: Leaving directory `/home/mine/gitrepos/openwrt2'
> make[1]: ***
> [/home/mine/gitrepos/openwrt2/staging_dir/target-arm_cortex-a7+vfp_musl-1.1.10_eabi/stamp/.target_install]
> Error 2
> make[1]: Leaving directory `/home/mine/gitrepos/openwrt2'
> make: *** [world] Error 2
> ==================================================================
> 
> 
> Is it possible at all to activate the Device Tree for Raspberry builds
> at all?
> 
> I'm working on the master of git://openwrt.org/openwrt.git
> 
> Thanks,
> Michael

Somehow CONFIG_MTD is not activate in your config, please try the
attached patch t make OpenWrt still build in such cases.

Hauke