Index: head/net-p2p/bitmessage/files/patch-src_bitmsghash_bitmsghash.cpp
===================================================================
--- head/net-p2p/bitmessage/files/patch-src_bitmsghash_bitmsghash.cpp	(revision 415745)
+++ head/net-p2p/bitmessage/files/patch-src_bitmsghash_bitmsghash.cpp	(revision 415746)
@@ -1,20 +1,20 @@
 --- src/bitmsghash/bitmsghash.cpp.orig	2016-05-02 19:51:46 UTC
 +++ src/bitmsghash/bitmsghash.cpp
 @@ -11,7 +11,7 @@
  #include <string.h>
  #include <stdio.h>
  #include <stdlib.h>
 -#ifdef __APPLE__
-+#if defined(__APPLE__) || defined(__FreeBSD__)
++#if defined(__APPLE__) || defined(__FreeBSD__) || defined (__DragonFly__)
  #include <sys/types.h>
  #include <sys/sysctl.h>
  #endif
 @@ -89,6 +89,8 @@ void getnumthreads()
  #else
  	if (sysctlbyname("hw.logicalcpu", &core_count, &len, 0, 0) == 0)
  		numthreads = core_count;
 +	else if (sysctlbyname("hw.ncpu", &core_count, &len, 0, 0) == 0)
 +		numthreads = core_count;
  #endif
  	for (unsigned int i = 0; i < len * 8; i++)
  #if defined(_WIN32)