38.7. Clean the build
You did something crazy, and nothing seems to work anymore?
All our build outputs are stored under out/, so the coarsest and most effective thing you can do is:
rm -rf out
This implies a full rebuild for all archs however, so you might first want to explore finer grained cleans first.
All our individual build-* scripts have a --clean option to completely nuke their builds:
./build-gem5 --clean ./build-qemu --clean ./build-buildroot --clean
Verify with:
ls "$(./getvar qemu_build_dir)" ls "$(./getvar gem5_build_dir)" ls "$(./getvar buildroot_build_dir)"
Note that host tools like QEMU and gem5 store all archs in a single directory to factor out build objects, so cleaning one arch will clean all of them.
To only nuke only one Buildroot package, we can use the -dirclean Buildroot target:
./build-buildroot --no-all -- <package-name>-dirclean
e.g.:
./build-buildroot --no-all -- sample_package-dirclean
Verify with:
ls "$(./getvar buildroot_build_build_dir)"