Commit 7a85300ab0057f6d8add9b6e7bd2e6a6a3aeac70

yuangongji 2019-08-23T21:48:05

cmake: attach doxygen target into all target v2: Disable non-html generator for doxygen by default v3: convert cmake option to doxygen config (cherry picked from commit 1d1c19091f13b7e19015698a23f454aa85f17ac3)