[opus] [PATCH 3/8] Autoconf changes for arm64 inline assembly support.

[Jonathan Lennox]

---
 configure.ac | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/configure.ac b/configure.ac
index 019d36d..13ed33f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -199,6 +199,25 @@ cpu_arm=no
 AS_IF([test x"${enable_asm}" = x"yes"],[
     inline_optimization="No inline ASM for your platform, please send patches"
     case $host_cpu in
+      arm64*|aarch64*)
+      dnl Currently we only have asm for fixed-point
+      AS_IF([test "$enable_float" != "yes"],[
+            cpu_arm64=yes
+            AC_DEFINE([OPUS_ARM64_ASM], [],  [Make use of ARM64 asm optimization])
+            AS_GCC_INLINE_ASSEMBLY(
+                [inline_optimization="ARM64"],
+                [inline_optimization="disabled"]
+            )
+            AS_IF([test x"$inline_optimization" = x"ARM64"],[
+                AC_DEFINE([OPUS_ARM64_INLINE_ASM], 1,
+                    [Use ARM64 inline asm optimizations])
+                ])
+                dnl Don't yet have external asm for arm64
+                asm_optimization="disabled"
+                dnl Don't need RTCD for arm64
+                rtcd_support=no
+             ])
+      ;;
       arm*)
         dnl Currently we only have asm for fixed-point
         AS_IF([test "$enable_float" != "yes"],[
-- 
2.3.2 (Apple Git-55)