From 7b06ddb8352fe7f434414d7911ced94956bb25b2 Mon Sep 17 00:00:00 2001
From: Janne Grunau <janne-libav@jannau.net>
Date: Thu, 29 May 2014 17:04:57 +0200
Subject: [PATCH] configure: use .altmacro for gnu as check on arm

Clang's integrated assembler (after 3.4) does not yet support the
'.altmacro' directive which is only used in arm asm. Support is planned:
http://llvm.org/bugs/show_bug.cgi?id=18918
---
 configure | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure b/configure
index 59f7273581..8359c68b13 100755
--- a/configure
+++ b/configure
@@ -3734,6 +3734,10 @@ if enabled asm; then
 \n: .int 0
 .endm
 m x
+EOF
+
+    check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
+.altmacro
 EOF
 
     check_as <<EOF && enable as_func