--- configure.orig	2016-03-12 21:43:12 UTC
+++ configure
@@ -9002,7 +9002,7 @@ esac
 LIBTOOL_DEPS=$ltmain
 
 # Always use our own libtool.
-LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+LIBTOOL='$(SHELL) $(top_builddir)/libtool --tag=CC'
 
 
 
@@ -17104,7 +17104,7 @@ case "$target" in
 	OSTYPE=LINUX ;;
 *-*-darwin*)
 	OSTYPE=DARWIN ;;
-*-*-*bsd*)
+*-*-*bsd*|*-*-dragonfly*)
 	OSTYPE=BSD ;;
 esac