Ninja has recently be enabled as the default build system to build llvm fork for rust compiler [1]. But we can still use Make if "ninja = false" is provided in config.toml. Ninja support can be enabled by a following patch. [1] https://github.com/rust-lang/rust/commit/30b7dac745b1555cd96f41977f7d24435cbe7fa2 Fixes: https://gitlab.com/buildroot.org/buildroot/-/jobs/1019386205 Signed-off-by: Romain Naour <romain.naour@gmail.com> Cc: Eric Le Bihan <eric.le.bihan.dev@free.fr> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>