[gdk-pixbuf] build: Add dist script

[Emmanuele Bassi <ebassi src gnome org>]

commit f0a2ba958f34c4f39bfe71642f72e8191bbb991d
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sun Mar 21 14:35:17 2021 +0000

    build: Add dist script
    
    We want to ship the generated API reference in the release archive.

 build-aux/dist.py | 22 ++++++++++++++++++++++
 meson.build       |  4 ++++
 2 files changed, 26 insertions(+)
---
diff --git a/build-aux/dist.py b/build-aux/dist.py
new file mode 100644
index 000000000..4f1a18df2
--- /dev/null
+++ b/build-aux/dist.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+
+import os
+import shutil
+
+references = [
+    'docs/gdk-pixbuf',
+    'docs/gdk-pixdata',
+]
+
+sourceroot = os.environ.get('MESON_SOURCE_ROOT')
+buildroot = os.environ.get('MESON_BUILD_ROOT')
+distroot = os.environ.get('MESON_DIST_ROOT')
+
+for reference in references:
+    src_path = os.path.join(buildroot, reference)
+    if os.path.exists(src_path):
+        dst_path = os.path.join(distroot, reference)
+        if os.path.isdir(src_path):
+            shutil.copytree(src_path, dst_path)
+        elif os.path.isfile(src_path):
+            shutil.copyfile(src_path, dst_path)
diff --git a/meson.build b/meson.build
index 4725e9498..aa1179453 100644
--- a/meson.build
+++ b/meson.build
@@ -408,6 +408,10 @@ if not meson.is_cross_build()
   endif
 endif
 
+if not meson.is_subproject()
+  meson.add_dist_script('build-aux/dist.py')
+endif
+
 summary = [
   '',
   'GDK-Pixbuf @0@'.format(meson.project_version()),