RTD to build doxygen xml before using Sphinx

b09b1c3f · Christopher Haine · c6e65dfe · b09b1c3f
Commit b09b1c3f authored Sep 8, 2021 by Christopher Haine
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -9,7 +9,7 @@ build:
  image: latest
  apt_packages:
    - make
-    - gcc
+    - gcc-9
    - libtool 
    - autoconf 
    - automake