build: add libmutter typelibdir rpath to mutter-clutter-wayland backend

mutter-clutter is installed in a private libdir, which we can find with libmutter's typelibdir.

meson.build

@@ -57,13 +57,16 @@ xi_dep = dependency('xi', required : false)
 cc = meson.get_compiler('c')
 xdo_lib = cc.find_library('xdo', dirs : ['/usr/lib'], required : true)
 
+libmutter_dep = dependency('libmutter-3', required: false)
 mutter_clutter_dep = dependency('mutter-clutter-3', required : false)
 
-if not mutter_clutter_dep.found()
+if not libmutter_dep.found() or not mutter_clutter_dep.found()
+  libmutter_dep = dependency('libmutter-4', required: false)
   mutter_clutter_dep = dependency('mutter-clutter-4', required : false)
 endif
 
-if not mutter_clutter_dep.found()
+if not libmutter_dep.found() or not mutter_clutter_dep.found()
+  libmutter_dep = dependency('libmutter-5', required: false)
   mutter_clutter_dep = dependency('mutter-clutter-5', required : false)
 endif
 

src/meson.build

@@ -113,7 +113,7 @@ if x11_dep.found() and xtst_dep.found() and xi_dep.found()
   )
 endif
 
-if mutter_clutter_dep.found()
+if libmutter_dep.found() and mutter_clutter_dep.found()
   inputsynth_sources_wayland_clutter = [
     'inputsynth-wayland-clutter.c',
   ]
@@ -132,6 +132,8 @@ if mutter_clutter_dep.found()
     link_with: inputsynth_lib,
     install_dir: join_paths(get_option('libdir'), 'libinputsynth-' + api_version + '/plugins'),
     install: true,
+    build_rpath : libmutter_dep.get_pkgconfig_variable('typelibdir'),
+    install_rpath : libmutter_dep.get_pkgconfig_variable('typelibdir')
   )
 endif