/home/ubuntu/lede-imagebuilder-brcm2708-bcm2710.Linux-x86_64/build_dir/target-aarch64_cortex-a53+neon-vfpv4_musl/linux-brcm2708_bcm2710/linux-4.9.20/arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b.dtb: No such file or directory
Could be that the image builder is missing those files atm but since I don't use it I simply don't know.
dts stands for Device Tree Source files, so unless you have those files you cannot use the image builder. My suggestion is to start from scratch, delete everything and try again.
Same thing here when trying to build LEDE for a Target System (PLXTECH/Oxford NAS782x/OX82x) with Target Profile (Cloud Engines Pogoplug Pro (with mPCIe)), even after a make dirclean. Here is the excerpt to show the error message.
sh /home/local/devel/LEDE-git/scripts/sysupgrade-tar.sh --board pogoplug-pro --kernel /home/local/devel/LEDE-git/build_dir/target-arm_mpcore_musl_eabi/linux-oxnas/pogoplug-pro-uImage --rootfs /home/local/devel/LEDE-git/build_dir/target-arm_mpcore_musl_eabi/linux-oxnas/root.squashfs /home/local/devel/LEDE-git/build_dir/target-arm_mpcore_musl_eabi/linux-oxnas/tmp/lede-oxnas-pogoplug-pro-squashfs-sysupgrade.tar
tar: Option --mtime: Treating date '@1494714844' as 2017-05-13 22:34:04
sysupgrade-pogoplug-pro/
sysupgrade-pogoplug-pro/kernel
sysupgrade-pogoplug-pro/root
tar: sysupgrade.tar: Wrote only 2048 of 10240 bytes
tar: Error is not recoverable: exiting now
Makefile:107: recipe for target '/home/local/devel/LEDE-git/build_dir/target-arm_mpcore_musl_eabi/linux-oxnas/tmp/lede-oxnas-pogoplug-pro-squashfs-sysupgrade.tar' failed
make[4]: *** [/home/local/devel/LEDE-git/build_dir/target-arm_mpcore_musl_eabi/linux-oxnas/tmp/lede-oxnas-pogoplug-pro-squashfs-sysupgrade.tar] Error 2
make[4]: Leaving directory '/home/local/devel/LEDE-git/target/linux/oxnas/image'
Makefile:30: recipe for target 'install' failed
make[3]: *** [install] Error 2
make[3]: Leaving directory '/home/local/devel/LEDE-git/target/linux/oxnas'
Makefile:13: recipe for target 'install' failed
make[2]: *** [install] Error 2
make[2]: Leaving directory '/home/local/devel/LEDE-git/target/linux'
target/Makefile:23: recipe for target 'target/linux/install' failed
make[1]: *** [target/linux/install] Error 2
make[1]: Leaving directory '/home/local/devel/LEDE-git'
/home/local/devel/LEDE-git/include/toplevel.mk:206: recipe for target 'target/install' failed
make: *** [target/install] Error 2
Thank you and you are right! I checked my OpenSuSE Linux desktop computer and found it only had about 250 MB root partition. After some housing cleaning, the root partition (where /tmp is) now has about 1/2 GB storage spa ceand the compilation completes sans a problem.
BTW, is there away to configure buildroot so that it will use the LEDE buildroot/tmp directory, instead of /tmp directory? Right now, I still have about 15 GB storage space left on my LEDE buildroot directory.