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There are a number of ports that are broken on platforms that do not provide sbrk. This includes aarch64 and riscv64.

Most of the logfiles below are from this aarch64 build, and show up there mostly as linker_error. However, not every build failing with that error is due to sbrk; only the ones below.

As of 20170130 all of these ports are marked BROKEN on aarch64 to save cycles on the package build cluster. Note that aarch64 ports are built under emulation there, running in a 11.0 jail on an 11.0 host.

As of 2016113, graphics/graphviz was fixed by this commit. IWBNI someone attempted to see if this patch would also apply to all these other ports.