Try a raw build

Author: rowleya

.readthedocs.yml

@@ -15,9 +15,8 @@
 version: 2
 build:
   os: ubuntu-22.04
-  tools:
-    python: "3.11"
-sphinx:
-  configuration: doc/source/conf.py
-  builder: dirhtml
-  fail_on_warning: false
+  jobs:
+    build:
+      - doxygen
+      - cd bmp; doxygen
+      - cd doxybuild; rm -rf $READTHEDOCS_OUTPUT/html/bmp || true; cp -a ../tools/html/* $READTHEDOCS_OUTPUT/html/; cp -a ../bmp/html $READTHEDOCS_OUTPUT/html