From 7a7c011b009f99e2337aeaac38cc9649be73517b Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Mon, 13 Nov 2017 20:08:29 +0100
Subject: [PATCH] make gstreamer elements optional

---
 meson.build       | 31 ++++++++++++++++++-------------
 meson_options.txt |  4 ++++
 src/meson.build   |  5 ++++-
 3 files changed, 26 insertions(+), 14 deletions(-)

diff --git a/meson.build b/meson.build
index 695c20bc8..3ceeab2f1 100644
--- a/meson.build
+++ b/meson.build
@@ -137,21 +137,14 @@ configure_file(input : 'Makefile.in',
   configuration : makedata)
 
 # Find dependencies
-glib_dep = dependency('glib-2.0', version : '>=2.32.0')
-gobject_dep = dependency('gobject-2.0')
-gmodule_dep = dependency('gmodule-2.0')
-gio_dep = [dependency('gio-2.0'), dependency('gio-unix-2.0')]
-jack_dep = dependency('jack', version : '>= 1.9.10', required : false)
-mathlib = cc.find_library('m', required : false)
-rt_lib = cc.find_library('rt', required : false) # clock_gettime
-dl_lib = cc.find_library('dl', required : false)
+mathlib = cc.find_library('m', required : true)
+rt_lib = cc.find_library('rt', required : true) # clock_gettime
+dl_lib = cc.find_library('dl', required : true)
 pthread_lib = cc.find_library('pthread', required : true)
 dbus_dep = dependency('dbus-1')
-gst_dep = [dependency('gstreamer-1.0'),
-           dependency('gstreamer-plugins-base-1.0'),
-           dependency('gstreamer-video-1.0'),
-           dependency('gstreamer-audio-1.0'),
-           dependency('gstreamer-allocators-1.0'),]
+
+#optional dependencies
+jack_dep = dependency('jack', version : '>= 1.9.10', required : false)
 
 subdir('spa')
 subdir('src')
@@ -170,3 +163,15 @@ if get_option('enable_man')
     subdir('man')
   endif
 endif
+
+if get_option('enable_gstreamer')
+  glib_dep = dependency('glib-2.0', version : '>=2.32.0')
+  gobject_dep = dependency('gobject-2.0')
+  gmodule_dep = dependency('gmodule-2.0')
+  gio_dep = [dependency('gio-2.0'), dependency('gio-unix-2.0')]
+  gst_dep = [dependency('gstreamer-1.0'),
+             dependency('gstreamer-plugins-base-1.0'),
+             dependency('gstreamer-video-1.0'),
+             dependency('gstreamer-audio-1.0'),
+             dependency('gstreamer-allocators-1.0'),]
+endif
diff --git a/meson_options.txt b/meson_options.txt
index e479f65b2..02b931943 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -6,3 +6,7 @@ option('enable_man',
        description: 'Build manpages',
        type: 'boolean',
        value: false)
+option('enable_gstreamer',
+       description: 'Build GStreamer plugins',
+       type: 'boolean',
+       value: false)
diff --git a/src/meson.build b/src/meson.build
index c9032de45..b30f784d6 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -4,5 +4,8 @@ subdir('extensions')
 subdir('daemon')
 subdir('tools')
 subdir('modules')
-subdir('gst')
 subdir('examples')
+
+if get_option('enable_gstreamer')
+  subdir('gst')
+endif