[gnome-shell/libst-build-rpath] build: Add mutter's private directory to libst's build-time RPATH

[Iain Lane <iainl src gnome org>]

commit 328d2ae132f65222fec3d5fb55f5dea4f52284fe
Author: Iain Lane <iainl gnome org>
Date:   Wed Mar 6 12:33:33 2019 +0000

    build: Add mutter's private directory to libst's build-time RPATH
    
    We need this to run `test-theme`, otherwise when run as part of the
    build tests it fails like:
    
      error while loading shared libraries: libmutter-cogl-4.so.0: cannot
      open shared object file: No such file or directory

 src/st/meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/st/meson.build b/src/st/meson.build
index 38ae5c722..444ed4901 100644
--- a/src/st/meson.build
+++ b/src/st/meson.build
@@ -126,6 +126,7 @@ libst = shared_library('st-1.0',
   sources: st_gir_sources + st_non_gir_sources,
   c_args: st_cflags,
   dependencies: [clutter_dep, gtk_dep, croco_dep, x11_dep, m_dep],
+  build_rpath: mutter_typelibdir,
   install_rpath: mutter_typelibdir,
   install_dir: pkglibdir,
   install: true