From 62126576fc7f6009682629b5a24d4527a9a09dfa Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Thu, 24 Nov 2016 11:55:15 +0100
Subject: gnu: hdf5: Build the C++ interface.

* gnu/packages/maths.scm (hdf5)[arguments]: Add #:configure-flags.
---
 gnu/packages/maths.scm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'gnu/packages/maths.scm')

diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 0c51f6d54f..e432ed5c05 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -563,7 +563,10 @@ incompatible with HDF5.")
     (inputs
      `(("zlib" ,zlib)))
     (arguments
-     `(#:phases
+     `(;; Some of the users, notably Flann, need the C++ interface.
+       #:configure-flags '("--enable-cxx")
+
+       #:phases
        (modify-phases %standard-phases
          (add-before 'configure 'patch-configure
            (lambda _
-- 
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