From b7a46ed22764db9097aba96e68143d46b2a75be0 Mon Sep 17 00:00:00 2001
From: Marius Bakke <mbakke@fastmail.com>
Date: Wed, 20 Jun 2018 15:18:35 +0200
Subject: gnu: openblas: Fix build on i686.

* gnu/packages/patches/openblas-fix-tests-i686.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/maths.scm (openblas)[native-inputs]: Add it.
[arguments]: Add phase to apply it on i686 systems only.
---
 gnu/packages/patches/openblas-fix-tests-i686.patch | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 gnu/packages/patches/openblas-fix-tests-i686.patch

(limited to 'gnu/packages/patches/openblas-fix-tests-i686.patch')

diff --git a/gnu/packages/patches/openblas-fix-tests-i686.patch b/gnu/packages/patches/openblas-fix-tests-i686.patch
new file mode 100644
index 0000000000..3325546ea3
--- /dev/null
+++ b/gnu/packages/patches/openblas-fix-tests-i686.patch
@@ -0,0 +1,35 @@
+Fix a test failure on some i686 systems:
+
+https://github.com/xianyi/OpenBLAS/issues/1575
+
+This patch is a squashed version of these commits:
+
+https://github.com/xianyi/OpenBLAS/pull/1583
+
+diff --git a/kernel/x86/KERNEL.NEHALEM b/kernel/x86/KERNEL.NEHALEM
+index 835520ef..65b03ae5 100644
+--- a/kernel/x86/KERNEL.NEHALEM
++++ b/kernel/x86/KERNEL.NEHALEM
+@@ -1,3 +1 @@
+ include $(KERNELDIR)/KERNEL.PENRYN
+-SSWAPKERNEL  = ../arm/swap.c
+-DSWAPKERNEL  = ../arm/swap.c
+diff --git a/kernel/x86/swap.S b/kernel/x86/swap.S
+index 54b00b33..e30c2789 100644
+--- a/kernel/x86/swap.S
++++ b/kernel/x86/swap.S
+@@ -138,6 +138,14 @@
+ /* INCX != 1 or INCY != 1 */
+ 
+ .L14:
++	cmpl	$0, %ebx
++	jne	.L141
++	cmpl	$0, %ecx
++	jne	.L141
++/* INCX == 0 and INCY == 0 */
++	jmp	.L27
++
++.L141:
+ 	movl	%edx, %eax
+ 	sarl	$2,   %eax
+ 	jle	.L28
-- 
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