[Bug 705208] New: [dvbsrc] should check if _XOPEN_SOURCE is already defined

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=705208
  GStreamer | gst-plugins-bad | git

           Summary: [dvbsrc] should check if _XOPEN_SOURCE is already
                    defined
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: julien.isorce at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=250557)
 View: https://bugzilla.gnome.org/attachment.cgi?id=250557
 Review: https://bugzilla.gnome.org/review?bug=705208&attachment=250557

check if _GNU_SOURCE before to define _XOPEN_SOURCE

When _GNU_SOURCE is defined I fail to build dvbsrc: "error: previous
definition"

It should check if _GNU_SOURCE before to define _XOPEN_SOURCE

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