From a071ba629b89dbbe458d0865a0c4ebc3f92d3524 Mon Sep 17 00:00:00 2001
From: Thiago Macieira <thiago.macieira@intel.com>
Date: Sun, 8 Dec 2013 11:58:44 -0800
Subject: Cascade detection of SSE3 support and up

If SSE2 isn't supported, then SSE3 can't be either. Onwards and upwards
for SSSE3, SSE4.1, SSE4.2 and AVX. The test for AVX2 was already there.

Task-number: QTBUG-24773
Change-Id: I005258db52d8abcd407a99b8ebcc23cdea8e3d9f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
---
 configure | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'configure')

diff --git a/configure b/configure
index 99023dc8b5..6f540fa814 100755
--- a/configure
+++ b/configure
@@ -4224,6 +4224,9 @@ if [ "${CFG_SSE2}" = "auto" ]; then
 fi
 
 # detect sse3 support
+if [ "${CFG_SSE2}" = "no" ]; then
+    CFG_SSE3=no
+fi
 if [ "${CFG_SSE3}" = "auto" ]; then
     if compileTest common/sse3 "sse3"; then
        CFG_SSE3=yes
@@ -4233,6 +4236,9 @@ if [ "${CFG_SSE3}" = "auto" ]; then
 fi
 
 # detect ssse3 support
+if [ "${CFG_SSE3}" = "no" ]; then
+    CFG_SSSE3=no
+fi
 if [ "${CFG_SSSE3}" = "auto" ]; then
     if compileTest common/ssse3 "ssse3"; then
        CFG_SSSE3=yes
@@ -4242,6 +4248,9 @@ if [ "${CFG_SSSE3}" = "auto" ]; then
 fi
 
 # detect sse4.1 support
+if [ "${CFG_SSSE3}" = "no" ]; then
+    CFG_SSE4_1=no
+fi
 if [ "${CFG_SSE4_1}" = "auto" ]; then
     if compileTest common/sse4_1 "sse4_1"; then
        CFG_SSE4_1=yes
@@ -4251,6 +4260,9 @@ if [ "${CFG_SSE4_1}" = "auto" ]; then
 fi
 
 # detect sse4.2 support
+if [ "${CFG_SSE4_1}" = "no" ]; then
+    CFG_SSE4_2=no
+fi
 if [ "${CFG_SSE4_2}" = "auto" ]; then
     if compileTest common/sse4_2 "sse4_2"; then
        CFG_SSE4_2=yes
@@ -4260,6 +4272,9 @@ if [ "${CFG_SSE4_2}" = "auto" ]; then
 fi
 
 # detect avx support
+if [ "${CFG_SSE4_2}" = "no" ]; then
+    CFG_AVX=no
+fi
 if [ "${CFG_AVX}" = "auto" ]; then
     if compileTest common/avx "avx"; then
        case "$XQMAKESPEC" in
-- 
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