Fixed rtd doc generation

Author: JohanMabille

docs/Doxyfile

@@ -6,7 +6,6 @@ INPUT             = ../include/xsimd/types/xsimd_api.hpp \
                     ../include/xsimd/config/xsimd_config.hpp \
                     ../include/xsimd/memory/xsimd_alignment.hpp \
                     ../include/xsimd/memory/xsimd_aligned_allocator.hpp \
-                    \
                     ../include/xsimd/types/xsimd_generic_arch.hpp \
                     ../include/xsimd/types/xsimd_avx2_register.hpp \
                     ../include/xsimd/types/xsimd_avx512bw_register.hpp \

docs/source/conf.py

@@ -4,6 +4,11 @@
 import os
 import subprocess
 
+on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
+
+if on_rtd:
+    subprocess.call('cd ..; doxygen', shell=True)
+
 import sphinx_rtd_theme
 
 html_theme = "sphinx_rtd_theme"