Disable the documentation generation by default.

options/common.cmake

@@ -24,7 +24,7 @@
 
 lcb_add_option("Unit tests" "Enable unit tests support with BCUnit library." "${DEFAULT_VALUE_ENABLE_UNIT_TESTS}")
 lcb_add_option("Debug logs" "Enable debug level logs in libinphone and mediastreamer2." NO)
-lcb_add_option("Doc" "Enable documentation generation with Doxygen." YES)
+lcb_add_option("Doc" "Enable documentation generation with Doxygen and Sphinx" NO)
 lcb_add_option("SOCI" "Enable SOCI support." "${DEFAULT_VALUE_ENABLE_SOCI}")
 lcb_add_option("Tools" "Enable tools binary compilation." "${DEFAULT_VALUE_ENABLE_TOOLS}")
 lcb_add_option("unmaintained" "Allow inclusion of unmaintained code in the build." OFF)