Index: head/astro/libosmium/files/patch-include_osmium_util_endian.hpp
===================================================================
--- head/astro/libosmium/files/patch-include_osmium_util_endian.hpp	(revision 431356)
+++ head/astro/libosmium/files/patch-include_osmium_util_endian.hpp	(revision 431357)
@@ -1,13 +1,13 @@
 --- include/osmium/util/endian.hpp.orig	2016-11-20 16:25:23 UTC
 +++ include/osmium/util/endian.hpp
 @@ -35,7 +35,9 @@ DEALINGS IN THE SOFTWARE.
  
  // Windows is only available for little endian architectures
  // http://stackoverflow.com/questions/6449468/can-i-safely-assume-that-windows-installations-will-always-be-little-endian
 -#if !defined(_WIN32) && !defined(__APPLE__)
-+#if defined(__FreeBSD__)
++#if defined(__FreeBSD__) || defined(__DragonFly__)
 +# include <sys/endian.h>
 +#elif !defined(_WIN32) && !defined(__APPLE__)
  # include <endian.h>
  #else
  # define __LITTLE_ENDIAN 1234