OpenWrt with BTF

For Developers
1

I have a Raspberry Pi 4 B with OpenWRT 22.03.3, I'm trying to run some eBPF programs with BTF. But the standard build is not built with BTF enabled. So I'm trying to build openwrt with CONFIG_DEBUG_INFO_BTF=y, but I can't seem to find how or where to enable this. Can anyone help me with this please?

Related PR I found: https://github.com/openwrt/openwrt/pull/3855 --> But this was not merged

2

Might be a bit late... but maybe you are still interested :wink:
I changed/ added the following lines in my ".config" file to build the Kernel with BTF enabled.

CONFIG_KERNEL_DEBUG_KERNEL=y
CONFIG_KERNEL_DEBUG_INFO=y
CONFIG_KERNEL_DEBUG_INFO_BTF=y
# CONFIG_KERNEL_DEBUG_INFO_REDUCED is not set