#!/usr/bin/env bash ./scripts/config --file .config --enable LTO_CLANG_FULL # Q: What requires this option to be enabled? # A: Enabling this option adds support for Clang's Link Time Optimization, # resulting in a nice performance uplift. # # Q: Why wasn't this option enabled by `make defconfig`? # A: There are two reasons for this: # 1. The "FULL" LTO option uses a lot of RAM during build-time. # 2. Just like '-O3', "FULL" LTO means a "bigger" kernel. # # Both point are discussed here: # https://github.com/ClangBuiltLinux/linux/issues/1643/