From 206a52089a7281b71adb4bebe3df68e5c6ccaca2 Mon Sep 17 00:00:00 2001
From: Andreas Enge <andreas@enge.fr>
Date: Mon, 11 Nov 2013 19:16:03 +0100
Subject: [PATCH] gnu: qt: Enable SIMD instructions available on x86_64.

* gnu/packages/qt.scm (qt, qt-4): Enable mmx, 3dnow, sse and sse2 on x86_64.
---
 gnu/packages/qt.scm | 72 ++++++++++++++++++++++++++-------------------
 1 file changed, 42 insertions(+), 30 deletions(-)

diff --git a/gnu/packages/qt.scm b/gnu/packages/qt.scm
index 2a0872bcdc..6aa467acef 100644
--- a/gnu/packages/qt.scm
+++ b/gnu/packages/qt.scm
@@ -118,22 +118,28 @@ X11 (yet).")
                            (("/bin/pwd") (which "pwd")))
               ;; do not pass "--enable-fast-install", which makes the
               ;; configure process fail
-              (zero? (system* "./configure"
-                              "-verbose"
-                              "-prefix" out
-                              "-opensource"
-                              "-confirm-license"
-                              ;; drop all special machine instructions
-                              "-no-sse2"
-                              "-no-sse3"
-                              "-no-ssse3"
-                              "-no-sse4.1"
-                              "-no-sse4.2"
-                              "-no-avx"
-                              "-no-avx2"
-                              "-no-neon"
-                              "-no-mips_dsp"
-                              "-no-mips_dspr2"))))
+              (zero? (system*
+                      "./configure"
+                      "-verbose"
+                      "-prefix" out
+                      "-opensource"
+                      "-confirm-license"
+                      ;; drop special machine instructions not supported
+                      ;; on all instances of the target
+                      ,@(if (string-prefix? "x86_64"
+                                            (or (%current-target-system)
+                                                (%current-system)))
+                            '()
+                            '("-no-sse2"))
+                      "-no-sse3"
+                      "-no-ssse3"
+                      "-no-sse4.1"
+                      "-no-sse4.2"
+                      "-no-avx"
+                      "-no-avx2"
+                      "-no-neon"
+                      "-no-mips_dsp"
+                      "-no-mips_dspr2"))))
           %standard-phases)))
     (home-page "http://qt-project.org/")
     (synopsis "Cross-platform GUI library")
@@ -165,20 +171,26 @@ developers using C++ or QML, a CSS & JavaScript like language.")
                            (("/bin/pwd") (which "pwd")))
               ;; do not pass "--enable-fast-install", which makes the
               ;; configure process fail
-              (zero? (system* "./configure"
-                              "-verbose"
-                              "-prefix" out
-                              "-opensource"
-                              "-confirm-license"
-                              ;; drop all special machine instructions
-                              "-no-mmx"
+              (zero? (system*
+                      "./configure"
+                      "-verbose"
+                      "-prefix" out
+                      "-opensource"
+                      "-confirm-license"
+                      ;; drop special machine instructions not supported
+                      ;; on all instances of the target
+                      ,@(if (string-prefix? "x86_64"
+                                            (or (%current-target-system)
+                                                (%current-system)))
+                            '()
+                            '("-no-mmx"
                               "-no-3dnow"
                               "-no-sse"
-                              "-no-sse2"
-                              "-no-sse3"
-                              "-no-ssse3"
-                              "-no-sse4.1"
-                              "-no-sse4.2"
-                              "-no-avx"
-                              "-no-neon"))))
+                              "-no-sse2"))
+                      "-no-sse3"
+                      "-no-ssse3"
+                      "-no-sse4.1"
+                      "-no-sse4.2"
+                      "-no-avx"
+                      "-no-neon"))))
           %standard-phases)))))