texi2html required for doc
|Reproduced by developer:
|Analyzed by developer:
If a user doesn't install "texi2html" package prior to ffmpeg compilation, it won't install docs, but there are no warnings during configure process and the default is to build ffmpeg with docs.
The solution is to issue a warning or an error (and force the user to use --disable-doc) during the configure process. Currently, it doesn't do/show anything, making a user think it will build docs too, but it doesn't build it.