cederom opened a new pull request, #18171:
URL: https://github.com/apache/nuttx/pull/18171
## Summary
* Update previous `-j 1` and `-j 8` switch to `-j auto` to use all CPUs.
* This improves doc build time 62s -> 25s on 24 core CPU.
* Add information about `make autobuild` to `make help`.
* Auotbuild is very handy for quick edits preview and was not in help before.
## Impact
Documentation build time is improved ~2.5x on modern CPUs.
## Testing
```
% uname -a
FreeBSD hexagon 14.3-RELEASE-p7 FreeBSD 14.3-RELEASE-p7 GENERIC amd64
% cd Documentation
% pipenv shell
```
Before change:
```
% /usr/bin/time -h gmake clean html
Removing everything under '_build'...
Running Sphinx v6.2.1
(..)
build succeeded.
The HTML pages are in _build/html.
1m4,40s real 1m3,62s user 0,72s sys
```
After change:
```
% /usr/bin/time gmake clean html
Removing everything under '_build'...
Running Sphinx v6.2.1
(..)
build succeeded.
The HTML pages are in _build/html.
25,31 real 72,79 user 7,26 sys
```
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