Update configure script.

diff --git a/libffi/configure b/libffi/configure
index 2c6ece1..9cd7de7 100755 (executable)
--- a/libffi/configure
+++ b/libffi/configure
@@ -20372,6 +20372,10 @@ case "$host" in
        TARGET=ARM; TARGETDIR=arm
        ;;
 
+  amd64-*-freebsd*)
+       TARGET=X86_64; TARGETDIR=x86
+       ;;
+
   cris-*-*)
        TARGET=LIBFFI_CRIS; TARGETDIR=cris
        ;;