Re-compiling with scons 3.1

wyattbiker

I've compiled 3.1 after downloading from github using git clone https://github.com/godotengine/godot.git It took almost 1/2 hour to compile on my Mac OS X using the scons platform=osx command. Now I would like to pull in the latest fixes from github. Do I just run git pull origin master and rerun scons platform=osx? Will this only compile and link the changes, saving some time?

Thanks!

TwistedTwigleg

@wyattbiker said: Do I just run git pull origin master and rerun scons platform=osx? Will this only compile and link the changes, saving some time?

Yes, running git pull origin master will download/pull the latest changes on the repository onto your computer. You will need to recompile the engine using scons platform=osx if you are on Mac.

Will this only compile and link the changes, saving some time?

From what I remember when I was editing the source, it only compiled changes and was much faster than the initial compile, so I think scons only compiles changes.

I'm not 100% sure though! It's been awhile since I've compiled from source as I mainly use Calinou's nightly builds anymore when I am wanting to try a master/nightly build.

Calinou

Will this only compile and link the changes, saving some time?

Yes, but note that SCons favors correctness over efficiency, which means that it may rebuild more files than needed when some files are changed. On the other hand, you almost never have to clear build files manually using scons platform=osx -c.

Also, keep in mind linking a binary as large as Godot with dozens of dependencies is going to take some time in any case. There's possible improvements in that area by using lld instead of ld when available, but the option hasn't been added to the Godot build system yet.

Lastly, don't forget to use multiple CPU threads when building by using scons platform=osx -j$(sysctl -n hw.logicalcpu) :)