[banshee] build: default to build just one media backend

[Andrés Aragoneses <aaragoneses src gnome org>]

commit af0107928dca8dd19872d11079f5f26798a97662
Author: Andrés G. Aragoneses <knocte gmail com>
Date:   Sun Dec 15 19:31:04 2013 +0100

    build: default to build just one media backend
    
    Unless explicitly required by the user at configure time, the build
    should default to only enable one media backend, not two at the same
    time.
    
    Banshee can run with more than one media backend, but this feature is
    mainly intended for the use case of having two backends with different
    capabilities. However, in this case we're talking about selecting the
    managed or the unmanaged backend, and both (should) have the same
    capabilities.
    
    Before this patch, the user had to explicitly enable the managed
    backend and disable the native one if she wanted to run the managed
    one without loading the native one. This is now corrected: if the
    user doesn't supply any option, only the native backend is built,
    and if the user supplies the --enable-gst-sharp option, only the
    managed one is built.

 build/m4/banshee/gstreamer-sharp.m4 |   13 -------------
 build/m4/banshee/gstreamer.m4       |   16 +++++++++++++++-
 configure.ac                        |    5 +----
 3 files changed, 16 insertions(+), 18 deletions(-)
---
diff --git a/build/m4/banshee/gstreamer.m4 b/build/m4/banshee/gstreamer.m4
index 3b18fd5..cb90074 100644
--- a/build/m4/banshee/gstreamer.m4
+++ b/build/m4/banshee/gstreamer.m4
@@ -1,6 +1,20 @@
 AC_DEFUN([BANSHEE_CHECK_GSTREAMER],
 [
-       AC_ARG_ENABLE(gst_native, AC_HELP_STRING([--disable-gst-native], [Disable GStreamer native backend]), 
, enable_gst_native="yes")
+       AC_ARG_ENABLE(gst_sharp, AC_HELP_STRING([--enable-gst-sharp], [Enable Gst# backend]), , 
enable_gst_sharp="no")
+
+       if test "x$enable_gst_sharp" = "xyes"; then
+               PKG_CHECK_MODULES(GST_SHARP, gstreamer-sharp-0.10)
+               AC_SUBST(GST_SHARP_LIBS)
+               AM_CONDITIONAL(ENABLE_GST_SHARP, true)
+
+               AC_ARG_ENABLE(gst_native, AC_HELP_STRING([--enable-gst-native], [Enable GStreamer native 
backend]), , enable_gst_native="no")
+
+       else
+               AM_CONDITIONAL(ENABLE_GST_SHARP, false)
+
+               AC_ARG_ENABLE(gst_native, AC_HELP_STRING([--disable-gst-native], [Disable GStreamer native 
backend]), , enable_gst_native="yes")
+       fi
+
 
        if test "x$enable_gst_native" = "xyes"; then
                BANSHEE_CHECK_LIBBANSHEE
diff --git a/configure.ac b/configure.ac
index 6c5bc8c..a29c18f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -57,10 +57,7 @@ dnl Clutter support is not available in Gst# backend and is opt-in in the unmana
 dnl so we set a default value here for simplicity
 AM_CONDITIONAL(HAVE_CLUTTER, false)
 
-dnl For the new media backend using gstreamer# (disabled by default for now)
-BANSHEE_CHECK_GSTREAMER_SHARP
-
-dnl Default media backend, libbanshee/native dependencies
+dnl Media backends
 BANSHEE_CHECK_GSTREAMER
 
 dnl User help