[Bug 700400] New: Can't build gst-plugins-base without orc support

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=700400
  GStreamer | gst-plugins-base | git

           Summary: Can't build gst-plugins-base without orc support
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: self at brendanlong.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


When I try to build gst-plugins-base from git, I get:

  CC     libgstvideo_1.0_la-video-format.lo
video-format.c: In function 'unpack_NV16':
video-format.c:930:3: error: implicit declaration of function
'video_orc_unpack_NV16' [-Werror=implicit-function-declaration]
video-format.c:930:3: error: nested extern declaration of
'video_orc_unpack_NV16' [-Werror=nested-externs]
video-format.c: In function 'pack_NV16':
video-format.c:940:3: error: implicit declaration of function
'video_orc_pack_NV16' [-Werror=implicit-function-declaration]
video-format.c:940:3: error: nested extern declaration of 'video_orc_pack_NV16'
[-Werror=nested-externs]
cc1: all warnings being treated as errors

Even though in the configure step, it says it won't build orc:

configure: *** Orc acceleration disabled.  Requires Orc >= 0.4.17, which was
               not found.  Slower code paths will be used.

I narrowed the problem down to commit af24e238802112ae7072a8246a05c5df2ccfcc7c
(https://bugzilla.gnome.org/show_bug.cgi?id=700377). I can build with the
previous commit (74a31a02fc6b2d6cba91765e6bc62525fa9bffb5).

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