From c6b3dc69bd4e6cd6f3457e3cfb671ca4e588344b Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Thu, 28 Jul 2016 13:55:03 +0200
Subject: gnu: vlc: Drop -ffast-math from the compilation flags.

* gnu/packages/video.scm (vlc)[arguments]: Add "ac_cv_c_fast_math=no" to
  #:configure-flags.
---
 gnu/packages/video.scm | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gnu/packages/video.scm b/gnu/packages/video.scm
index d5880c45e2..06f7496b71 100644
--- a/gnu/packages/video.scm
+++ b/gnu/packages/video.scm
@@ -623,6 +623,12 @@ audio/video codec library.")
     (arguments
      `(#:configure-flags
        `("--disable-a52" ; FIXME: reenable once available
+
+         ;; Gross workaround for <https://trac.videolan.org/vlc/ticket/16907>.
+         ;; In our case, this led to a test failure:
+         ;;   test_libvlc_equalizer: libvlc/equalizer.c:122: test_equalizer: Assertion `isnan(libvlc_audio_equalizer_get_amp_at_index (equalizer, u_bands))' failed.
+         "ac_cv_c_fast_math=no"
+
          ,(string-append "LDFLAGS=-Wl,-rpath -Wl,"
                          (assoc-ref %build-inputs "ffmpeg")
                          "/lib"))                 ;needed for the tests
-- 
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