From d3a33fe28d7933afda7bfa2e421bf0000c0c0eac Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Mon, 16 Nov 2015 16:01:33 +0100
Subject: [PATCH] gnu: eigen: Run 'ctest' in verbose mode.

* gnu/packages/algebra.scm (eigen)[arguments]: Add "-V" in
  'EIGEN_CTEST_ARGS'.
---
 gnu/packages/algebra.scm | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/algebra.scm b/gnu/packages/algebra.scm
index 41464ca8821..75eaf265596 100644
--- a/gnu/packages/algebra.scm
+++ b/gnu/packages/algebra.scm
@@ -422,7 +422,11 @@ (define-public eigen
                              (dash-j (format #f "-j~a" cores)))
                         ;; These variables are supposed to be honored.
                         (setenv "EIGEN_MAKE_ARGS" dash-j)
-                        (setenv "EIGEN_CTEST_ARGS" dash-j)
+
+                        ;; Use '-V' to get more details in case of test
+                        ;; failures.
+                        (setenv "EIGEN_CTEST_ARGS"
+                                (string-append "-V " dash-j))
 
                         (zero? (system* "make" "buildtests" dash-j))))))))
     (home-page "http://eigen.tuxfamily.org")
-- 
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