normalize amd64 to x86_64

This allows asm to be enabled on platforms that use amd64 in the host
tuple.

1 files changed, 4 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index 9f3d636..f5dcb77 100644
--- a/configure.ac
+++ b/configure.ac
@@ -84,6 +84,10 @@ case $host_cpu in
                 AS_IF([test "x$BSWAP4" = "xyes"],,
                     CPPFLAGS="$CPPFLAGS -D__STRICT_ALIGNMENT")
                 ;;
+        *amd64*)
+                host_cpu=x86_64
+                ;;
+
 esac
 
 AC_MSG_CHECKING([if .gnu.warning accepts long strings])