[FFmpeg-devel] Missing sudo on make install in INSTALL.md

[Timo Rothenpieler]

On 26.08.2021 06:34, "zhilizhao(赵志立)" wrote:
>> I tried try `make install` on my machine and I got:
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffprobe.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-all.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffprobe-all.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-utils.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-scaler.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-resampler.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-codecs.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-bitstream-filters.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-formats.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-protocols.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-devices.1': Permission denied
>>     install: cannot create regular file '/usr/local/share/man/man1/ffmpeg-filters.1': Permission denied
>>     make: *** [doc/Makefile:126: install-man] Error 1
>>
>> By doing `sudo make install` it fixs the problem. User are not on root all the time.
> 
> Nope. sudo is unnecessary or unavailable on some platform. You can install it to other
> directories without the need of root permission. Most importantly, sudo is a dangerous
> advice for novice. On the other hand, for anyone who already know what sudo is he/she
> doesn’t need such advice.

I'd even go so far to say that recommending sudo is outright dangerous. 
Installing an incompatible version of libav* into the system can break a 
whole lot of things.
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