--- configure.ac.orig	2017-02-05 22:41:56 UTC
+++ configure.ac
@@ -79,7 +79,12 @@ AS_IF([test x$enable_asm != xno], [
         [*darwin*], [
             ASFLAGS="$ASFLAGS -f macho$BITS -DPREFIX -DHAVE_ALIGNED_STACK=1" ],
         [*linux*|*dragonfly*|*bsd*|*solaris*], [
-            ASFLAGS="$ASFLAGS -f elf -DHAVE_ALIGNED_STACK=1" ],
+            AS_IF([test x$BITS = x64], [
+                ASFLAGS="$ASFLAGS -f elf -DHAVE_ALIGNED_STACK=1"
+            ], [
+                ASFLAGS="$ASFLAGS -f elf -DHAVE_ALIGNED_STACK=0"
+            ])
+        ],
         [*cygwin*|*mingw*], [
             ASFLAGS="$ASFLAGS -f win$BITS"
             AS_IF([test x$BITS = x64], [