Updated CPU count detection for BSD-based OSes

gistfile1.diff

diff --git a/scripts/functions/build_config b/scripts/functions/build_config
index a58ac98..44fb6a5 100755
--- a/scripts/functions/build_config
+++ b/scripts/functions/build_config
@@ -370,7 +370,21 @@ __rvm_detect_max_threads()
 {
   case "$(uname)" in
     (Darwin|FreeBSD)
-      sysctl -n hw.ncpu
+      if
+        __rvm_which sysctl >/dev/null
+      then
+        sysctl -n hw.ncpu
+      elif
+        [[ -x /usr/sbin/sysctl ]]
+      then
+        /usr/sbin/sysctl -n hw.ncpu
+      elif
+        [[ -x /sbin/sysctl ]]
+      then
+        /sbin/sysctl -n hw.ncpu
+      else
+        echo 1
+      fi
       ;;
     (*)
       cat /proc/cpuinfo 2>/dev/null | (grep vendor_id || echo 'one';) | wc -l