From 5f5f0614b03b1414372b7aa5113ed4ec784b00c8 Mon Sep 17 00:00:00 2001
From: Falco Peijnenburg <fpeijnenburg@gmail.com>
Date: Fri, 18 Nov 2016 12:44:49 +0100
Subject: [PATCH] Support for ARM in openblas

Attempting to build openblas on ARM resulted in the error "unsopported system: armv7l_linux". This PR resolves that issue and some other issues that pop up when trying to build openblas for ARM.
---
 .../libraries/science/math/openblas/default.nix            | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/science/math/openblas/default.nix b/pkgs/development/libraries/science/math/openblas/default.nix
index 3893875a234..e0e8c268629 100644
--- a/pkgs/development/libraries/science/math/openblas/default.nix
+++ b/pkgs/development/libraries/science/math/openblas/default.nix
@@ -11,11 +11,12 @@ let blas64_ = blas64; in
 let local = config.openblas.preferLocalBuild or false;
     binary =
       { i686-linux = "32";
+        armv7l-linux = "32";
         x86_64-linux = "64";
         x86_64-darwin = "64";
       }."${stdenv.system}" or (throw "unsupported system: ${stdenv.system}");
     genericFlags =
-      [ "DYNAMIC_ARCH=1"
+      [ "DYNAMIC_ARCH=${if stdenv.system == "armv7l-linux" then "0" else "1"}"
         "NUM_THREADS=64"
       ];
     localFlags = config.openblas.flags or
@@ -65,7 +66,9 @@ stdenv.mkDerivation {
       "BINARY=${binary}"
       "USE_OPENMP=${if stdenv.isDarwin then "0" else "1"}"
       "INTERFACE64=${if blas64 then "1" else "0"}"
-    ];
+    ]
+    ++
+    optionals (stdenv.system == "armv7l-linux") ["TARGET=ARMV7"];
 
   doCheck = true;
   checkTarget = "tests";