From 088c9674a9c81cf20e9a863df571ba6d48e9ae37 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Mon, 19 Dec 2016 21:53:33 -0500
Subject: when building for arm as thumb2 code, also request assembly as thumb

all assembly is now thumb2-compatible. on existing targets this is at
best a size optimization, but it will also facilitate porting to
thumb2-isa-only arm variants.
---
 configure | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure b/configure
index 81e90f7..c2db298 100755
--- a/configure
+++ b/configure
@@ -602,6 +602,10 @@ trycppif __ILP32__ "$t" && ARCH=x32
 fi
 
 if test "$ARCH" = "arm" ; then
+if trycppif __thumb2__ "$t" ; then
+tryflag CFLAGS_AUTO -Wa,-mimplicit-it=always
+tryflag CFLAGS_AUTO -Wa,-mthumb
+fi
 trycppif __ARMEB__ "$t" && SUBARCH=${SUBARCH}eb
 trycppif __ARM_PCS_VFP "$t" && SUBARCH=${SUBARCH}hf
 # Versions of clang up until at least 3.8 have the wrong constraint codes
-- 
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