[gnome-builder] doc: fix cross-references for libdazzle

[Christian Hergert <chergert src gnome org>]

commit e7e464d7a0c7fc1834f7a921f9ba556dc2badbc0
Author: Christian Hergert <chergert redhat com>
Date:   Fri Nov 3 17:31:23 2017 -0700

    doc: fix cross-references for libdazzle

 doc/sdk/meson.build |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/doc/sdk/meson.build b/doc/sdk/meson.build
index 24f97d2..0f5bcf5 100644
--- a/doc/sdk/meson.build
+++ b/doc/sdk/meson.build
@@ -7,6 +7,8 @@ private_headers = [
   '*-private.h',
 ]
 
+libdazzle_prefix = dependency('libdazzle-1.0').get_pkgconfig_variable('prefix')
+libdazzle_docpath = join_paths(libdazzle_prefix, 'share', 'gtk-doc', 'html')
 glib_prefix = dependency('glib-2.0').get_pkgconfig_variable('prefix')
 glib_docpath = join_paths(glib_prefix, 'share', 'gtk-doc', 'html')
 json_prefix = dependency('json-glib-1.0').get_pkgconfig_variable('prefix')
@@ -45,6 +47,7 @@ gnome.gtkdoc('libide',
          '--extra-dir=@0@'.format(join_paths(glib_docpath, 'glib')),
          '--extra-dir=@0@'.format(join_paths(glib_docpath, 'gobject')),
          '--extra-dir=@0@'.format(join_paths(gtk_docpath, 'gtk3')),
+         '--extra-dir=@0@'.format(join_paths(libdazzle_docpath, 'libdazzle')),
          '--extra-dir=@0@'.format(join_paths(json_docpath, 'json-glib')),
          '--extra-dir=@0@'.format(join_paths(vte_docpath, 'vte-2.91')),
          '--extra-dir=@0@'.format(json_docpath),