From f0aac1b49079185ded1bcf802e1a12467bfa4dcd Mon Sep 17 00:00:00 2001
From: Gustavo Sverzut Barbieri <barbieri@profusion.mobi>
Date: Mon, 20 Jan 2014 12:15:56 -0200
Subject: [PATCH] configure: include required NEON build flags.

It is required to use "-mfpu=neon" to build NEON.

Patch-by: Albin Tonnerre <lutin@debian.org>
---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index 045af73cfe..9d12cc813c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -510,6 +510,8 @@ case $host_cpu in
   arm*)
     build_cpu_neon="yes"
     AC_MSG_CHECKING([whether to use NEON instructions])
+    CFLAGS_save="${CFLAGS}"
+    CFLAGS="${CFLAGS} -mfpu=neon"
     AC_TRY_COMPILE([#include <arm_neon.h>],
        [asm volatile ("vqadd.u8 d0, d1, d0\n")],
        [
@@ -521,6 +523,7 @@ case $host_cpu in
         AC_MSG_RESULT([no])
         build_cpu_neon="no"
        ])
+    CFLAGS="${CFLAGS_save}"
     ;;
 esac