[libchamplain: 5/8] meson: Simplify use of gtkdocdir

[Jiří Techet <jiritechet src gnome org>]

commit 856c3be8c5967076eaf166547f0264560b9e68c0
Author: Jan Alexander Steffens (heftig) <jan steffens gmail com>
Date:   Thu Feb 21 21:41:03 2019 +0100

    meson: Simplify use of gtkdocdir

 docs/reference/meson.build | 10 ++++------
 meson.build                |  1 -
 2 files changed, 4 insertions(+), 7 deletions(-)
---
diff --git a/docs/reference/meson.build b/docs/reference/meson.build
index c99a57a..781205a 100644
--- a/docs/reference/meson.build
+++ b/docs/reference/meson.build
@@ -10,6 +10,8 @@ clutter_docpath = join_paths(clutter_prefix, 'share', 'gtk-doc', 'html', 'clutte
 gtk_prefix = gtk_dep.get_pkgconfig_variable('prefix')
 gtk_docpath = join_paths(gtk_prefix, 'share', 'gtk-doc', 'html', 'gtk3')
 
+gtkdocdir = join_paths(datadir, 'gtk-doc', 'html', package_string)
+
 libchamplain_reference_ignored_h = [
   'champlain-gtk.h',
   'champlain-adjustment.h',
@@ -52,7 +54,7 @@ libchamplain_reference_mkdb_args = [
 ]
 
 libchamplain_reference_fixxref_args = [
-  '--html-dir=@0@'.format(join_paths(gtkdocdir, 'html', package_string)),
+  '--html-dir=@0@'.format(gtkdocdir),
   '--extra-dir=@0@'.format(glib_docpath),
   '--extra-dir=@0@'.format(gobject_docpath),
   '--extra-dir=@0@'.format(clutter_docpath),
@@ -69,9 +71,5 @@ gnome.gtkdoc(
   mkdb_args: libchamplain_reference_mkdb_args,
   fixxref_args: libchamplain_reference_fixxref_args,
   install: true,
-  install_dir: join_paths(
-    gtkdocdir,
-    'html',
-    package_string,
-  )
+  install_dir: gtkdocdir,
 )
diff --git a/meson.build b/meson.build
index 54cb0e4..73cf9c3 100644
--- a/meson.build
+++ b/meson.build
@@ -53,7 +53,6 @@ typelibdir = join_paths(libdir, 'girepository-1.0')
 pkgconfigdir = join_paths(libdir, 'pkgconfig')
 
 girdir = join_paths(datadir, 'gir-1.0')
-gtkdocdir = join_paths(datadir, 'gtk-doc')
 vapidir = join_paths(datadir, 'vala', 'vapi')
 
 # Dependencies