Config jobs: $ncpus doesn't work on DragonflyBSD

[cgag]

Probably a problem on FreeBSD as well. The number of jobs seems to be getting set to 1 despite having 4 cpus, everything works fine if I manually set it to 4.

[23Skidoo]

The code that is used to find the number of cores is in cbits/getnumcores.c. On GHC > 6.12 we use the getNumberOfProcessors function from GHC RTS.

Which version of GHC was your cabal-install exe compiled with?

[cgag]

Ah, 7.8.3, maybe it's fixed in later versions.

[23Skidoo]

In GHC HEAD the POSIX version of this function looks like this (there's a separate Win32 implementation). Looks like it works on FreeBSD at least. If it doesn't work on your OS, please file a ticket on the GHC bug tracker.