gst-full: add linker flag to keep gst_init_static_plugins

In a fully static link where an app link with gstreamer-full
the gst_init_static_plugins can be discarded because
no one references it.
Indeed the symbol is looked up by gst_init to call if it exists
and so it is not clearly referenced.

In order to avoid this issue, we use the linker flag
--undefined=gst_init_static_plugins to keep
the symbol.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-build/-/merge_requests/207>

diff --git a/meson.build b/meson.build
index 725a91d..010a0f4 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -318,6 +318,7 @@ if get_option('default_library') == 'static'
   )
   pkgconfig.generate(gstfull,
     requires: glib_deps,
+    libraries_private: cc.get_supported_link_arguments(['-Wl,--undefined=gst_init_static_plugins']),
     subdirs : 'gstreamer-1.0')
   meson.override_dependency('gstreamer-full-1.0', gst_full_dep)
 endif