From 00c16d5b84f11d4eea3d06178d93cfc27bf3a931 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Wed, 4 Nov 2015 09:55:16 +0100
Subject: gnu: csound: Link against libmvec on x86_64.

* gnu/packages/audio.scm (csound)[arguments]: New field.
---
 gnu/packages/audio.scm | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gnu/packages/audio.scm b/gnu/packages/audio.scm
index 92ece7a47e..db3f91273c 100644
--- a/gnu/packages/audio.scm
+++ b/gnu/packages/audio.scm
@@ -320,6 +320,12 @@ tools (analyzer, mono/stereo tools, crossovers).")
                (base32
                 "0a1sni6lr7qpwywpggbkp0ia3h9bwwgf9i87gsag8ra2h30v82hd"))))
     (build-system cmake-build-system)
+    (arguments
+     ;; Work around this error on x86_64 with libc 2.22+:
+     ;;    libmvec.so.1: error adding symbols: DSO missing from command line
+     (if (string-prefix? "x86_64" (or (%current-target-system) (%current-system)))
+         '(#:configure-flags '("-DCMAKE_EXE_LINKER_FLAGS=-lmvec"))
+         '()))
     (inputs
      `(("alsa-lib" ,alsa-lib)
        ("boost" ,boost)
-- 
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