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Things you just have to know

Various things that aren't documented anywhere else.

• Generally, cross-builds via qemu are only feasible for the arm and mips variants. Specifically, attempts to use powerpc64 and sparc64 under qemu simply hang.

• If you use release.sh, you may use any value of WORLDDIR you wish, as long as that value is and only is /usr/src.

• If you want to build for -CURRENT, you must build from -CURRENT. You cannot build from xyz-STABLE.

• If your -CURRENT builds crash because of jemalloc, sprinkle the following magic pixie dust into /etc/make.conf: MALLOC_PRODUCTION=“any_value_here”

• AFAICT the armv7 changes have not been MFCed to -STABLE.