meson: Support building without Gst debug

diff --git a/meson.build b/meson.build
index fdf9348..bc5a972 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -73,6 +73,30 @@ else
       language : 'c')
 endif
 
+if gst_dep.type_name() == 'internal'
+    gst_proj = subproject('gstreamer')
+
+    if gst_proj.get_variable('disable_gst_debug')
+        message('GStreamer debug system is disabled')
+        add_project_arguments('-Wno-unused', language: 'c')
+    else
+        message('GStreamer debug system is enabled')
+    endif
+else
+    # We can't check that in the case of subprojects as we won't
+    # be able to build against an internal dependency (which is not built yet)
+    if not cc.compiles('''
+#include <gst/gstconfig.h>
+#ifdef GST_DISABLE_GST_DEBUG
+#error "debugging disabled, make compiler fail"
+#endif''' , dependencies: gst_dep)
+        message('GStreamer debug system is disabled')
+        add_project_arguments('-Wno-unused', language: 'c')
+    else
+        message('GStreamer debug system is enabled')
+    endif
+endif
+
 configinc = include_directories('.')
 plugins_install_dir = '@0@/gstreamer-1.0'.format(get_option('libdir'))
 subdir('ext/libav/')