[libdazzle/wip/lantw/fix-gtk-doc-build] doc: add two files and use full path in private_headers

[Ting-Wei Lan <lantw src gnome org>]

commit 48ad4542c345ddfef964684d5afe31c889c7d375
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Fri Feb 16 04:04:24 2018 +0800

    doc: add two files and use full path in private_headers
    
    It seems that private_headers doesn't really work because we always do
    out-of-tree build. This commit makes it use full paths in the headers
    list and adds two files which causes undefined reference error to it.

 doc/meson.build | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/doc/meson.build b/doc/meson.build
index 44d853c..39759a0 100644
--- a/doc/meson.build
+++ b/doc/meson.build
@@ -1,11 +1,12 @@
 subdir('xml')
 
-private_headers = [
-  'config.h',
+private_headers = ['config.h']
+
+private_src_headers = [
   'dazzle.h',
-  'dazzle-version.h',
   'graphing/dzl-column-private.h',
   'graphing/dzl-graph-column-private.h',
+  'menus/dzl-menu-button-section.h',
   'panel/dzl-dock-bin-edge-private.h',
   'panel/dzl-dock-paned-private.h',
   'panel/dzl-tab-private.h',
@@ -19,8 +20,13 @@ private_headers = [
   'tree/dzl-tree-private.h',
   'util/dzl-util-private.h',
   'widgets/dzl-list-box-private.h',
+  'widgets/dzl-rect-helper.h',
 ]
 
+foreach private_src_header : private_src_headers
+  private_headers += [join_paths(meson.source_root(), 'src', private_src_header)]
+endforeach
+
 glib_prefix = dependency('glib-2.0').get_pkgconfig_variable('prefix')
 glib_docpath = join_paths(glib_prefix, 'share', 'gtk-doc', 'html')
 docpath = join_paths(get_option('datadir'), 'gtk-doc', 'html')