--- configure.orig	2016-10-31 02:54:14.983447000 +0100
+++ configure	2016-10-31 02:55:00.218581000 +0100
@@ -7258,7 +7258,7 @@
 aix*)
   ac_symcode='[BCDTU]'
   ;;
-freebsd* | netbsd* | openbsd* | bsdi* | sunos* | cygwin32* | mingw32*)
+bsdsunix* | freebsd* | netbsd* | openbsd* | bsdi* | sunos* | cygwin32* | mingw32*)
   ac_sympat='_\([_A-Za-z][_A-Za-z0-9]*\)'
   ac_symxfrm='_\1 \1'
   ;;
@@ -10032,7 +10032,7 @@
     # need special flags to disable these optimizations. For example, the
     # definition of 'errno' in <errno.h>.
     case "$host_os" in
-      aix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;;
+      aix* | bsdsunix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;;
       solaris*) CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;;
     esac
   fi