[babl] Meson build: improve doc generation

[Øyvind Kolås <ok src gnome org>]

commit 43f5e6a6e6d257c11421ccdb6f3643688759a937
Author: John Marshall <jtm home gmail com>
Date:   Sat May 19 11:38:18 2018 +0100

    Meson build: improve doc generation

 docs/graphics/meson.build |   34 +++++++++++++++++++++++++---------
 docs/meson.build          |    7 +++++--
 2 files changed, 30 insertions(+), 11 deletions(-)
---
diff --git a/docs/graphics/meson.build b/docs/graphics/meson.build
index e7fe9f7..70cd9ab 100644
--- a/docs/graphics/meson.build
+++ b/docs/graphics/meson.build
@@ -1,13 +1,28 @@
 
 graphic_files = [
-  'babl-16x16',
-  'babl-48x48',
-  'babl-a4poster',
+  'babl-16x16.svg',
+  'babl-48x48.svg',
+  'babl-a4poster.svg',
 ]
 
-graphic_files_install = [
-  files('index.html'),
-]
+graphic_files_install = []
+
+# Dummy config to copy index.html to build
+graphic_files_install += configure_file(
+  input:  'index.html',
+  output: '@PLAINNAME@',
+  configuration: configuration_data()
+)
+
+
+foreach file : graphic_files
+  # Dummy config to copy svg files to build
+  graphic_files_install += configure_file(
+    input:  file,
+    output: '@PLAINNAME@',
+    configuration: configuration_data()
+  )
+endforeach
 
 if rsvg_convert_bin.found()
   foreach file : graphic_files
@@ -17,9 +32,10 @@ if rsvg_convert_bin.found()
       : []
     )
 
-    graphic_files_install += custom_target(file,
-      input : [ file + '.svg' ],
-      output: [ file + '.png' ],
+    graphic_files_install += custom_target(
+      file,
+      input: file,
+      output: '@BASENAME@.png',
       command: [
         rsvg_convert_bin,
         sizeinfo,
diff --git a/docs/meson.build b/docs/meson.build
index 1c33c44..03a38c9 100644
--- a/docs/meson.build
+++ b/docs/meson.build
@@ -5,8 +5,6 @@ location= 'public_html/babl'
 scptarget = host + ':' + location + '/'
 
 
-babl_css = files('babl.css')
-
 xml_insert = find_program(join_paths('tools', 'xml_insert.sh'))
 
 index_static_html = configure_file(
@@ -15,6 +13,10 @@ index_static_html = configure_file(
   configuration: conf,
 )
 
+babl_css = configure_file(input : 'babl.css',
+  output : 'babl.css',
+  configuration : configuration_data())
+
 index_html_tmp = custom_target('index.html.tmp',
   input : [ babl_html_dump, ],
   output: [ 'index.html.tmp', ],
@@ -43,6 +45,7 @@ index_html = custom_target('index.html',
     '&&', xml_insert, '@OUTPUT@', 'TODO',     '@INPUT3@',
     '&&', xml_insert, '@OUTPUT@', 'NEWS',     '@INPUT4@',
   ],
+  build_by_default: true,
 )