From 5855756c81041bd7dd81ae45f473e1c116e2a0f2 Mon Sep 17 00:00:00 2001
From: Eric Bavier <bavier@member.fsf.org>
Date: Thu, 21 Feb 2019 21:01:26 -0600
Subject: [PATCH] gnu: openblas: Honor parallel-job-count.

* gnu/packages/maths.scm (openblas)[arguments]: Add "MAKE_NB_JOBS" make flag.
---
 gnu/packages/maths.scm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 7a03036b67..c3587007df 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -2956,6 +2956,7 @@ parts of it.")
        #:make-flags
        (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
              "SHELL=bash"
+             "MAKE_NB_JOBS=0"           ;use jobserver for submakes
              ;; Build the library for all supported CPUs.  This allows
              ;; switching CPU targets at runtime with the environment variable
              ;; OPENBLAS_CORETYPE=<type>, where "type" is a supported CPU type.