From bf09cf1e3678ad6513aaf45ffce0997db1a6504d Mon Sep 17 00:00:00 2001
From: Pascal Massimino <pascal.massimino@gmail.com>
Date: Fri, 20 Mar 2015 07:54:33 -0700
Subject: [PATCH] conditionally add -msse4.1 in Makefile.unix

Change-Id: I46798d39f5354fe44224a4f9580665a967d2fa1f
---
 makefile.unix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/makefile.unix b/makefile.unix
index 7011c20d..e0cff2d5 100644
--- a/makefile.unix
+++ b/makefile.unix
@@ -71,6 +71,12 @@ EXTRA_FLAGS += -Wformat-security -Wformat-nonliteral
 
 # EXTRA_FLAGS += -Wvla
 
+# SSE4.1-specific flags:
+ifeq ($(HAVE_SSE41), 1)
+EXTRA_FLAGS += -DWEBP_HAVE_SSE41
+src/dsp/%_sse41.o: EXTRA_FLAGS += -msse4.1
+endif
+
 # AVX2-specific flags:
 ifeq ($(HAVE_AVX2), 1)
 EXTRA_FLAGS += -DWEBP_HAVE_AVX2