build: port to Apple M1.

* configure (lit_align): Also don't calculate lit_align as 2
on Darwin/arm64; that is a hack needed on 32 bit x86 Mac OS.

* jmp.S: Define DEFUN for Arm64 on Darwin. We have to use %%
as the statement separator; semicolons are comments.
Use the same __aarch64__ code for __arm64__. We just need
some Apple specific tidbits before and after.

1 files changed, 1 insertions, 1 deletions

diff --git a/configure b/configure
index de63be92..4739ccd4 100755
--- a/configure
+++ b/configure
@@ -1496,7 +1496,7 @@ if [ -z "$lit_align" ] ; then
     exit 1
   fi
 
-  if [ -n "$darwin_target" ] ; then
+  if [ -n "$darwin_target" ] && [ "$(arch)" = "i386" ] ; then
     lit_align=2
   else
     lit_align=$SIZEOF_WCHAR_T