--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libffi/set-libdir.patch	Wed Mar 13 12:15:00 2019 +0100
@@ -0,0 +1,28 @@
+--- configure.ac.orig	2019-03-12 14:38:16.655783859 +0100
++++ configure.ac	2019-03-12 14:38:26.358552083 +0100
+@@ -592,24 +592,7 @@
+ 
+ # These variables are only ever used when we cross-build to X86_WIN32.
+ # And we only support this with GCC, so...
+-if test "x$GCC" = "xyes"; then
+-  if test -n "$with_cross_host" &&
+-     test x"$with_cross_host" != x"no"; then
+-    toolexecdir="${exec_prefix}"/'$(target_alias)'
+-    toolexeclibdir="${toolexecdir}"/lib
+-  else
+-    toolexecdir="${libdir}"/gcc-lib/'$(target_alias)'
+-    toolexeclibdir="${libdir}"
+-  fi
+-  multi_os_directory=`$CC $CFLAGS -print-multi-os-directory`
+-  case $multi_os_directory in
+-    .) ;; # Avoid trailing /.
+-    ../*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
+-  esac
+-  AC_SUBST(toolexecdir)
+-else
+-  toolexeclibdir="${libdir}"
+-fi
++toolexeclibdir="${libdir}"
+ AC_SUBST(toolexeclibdir)
+ 
+ AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])