Unity builds for Irrlicht

loonychewy · Post by **loonychewy** » Mon Nov 10, 2008 12:14 am

Hi,

This may be something interesting for those who compile Irrlicht frequently, or otherwise have large projects to handle.

I've been experimenting with using unity builds to speed up compilation times, and here's what I get with my (old) machine, and the unmodified Irrlicht 1.4.2 source, full rebuild:

Release build: 2 mins to 1:04 mins
Debug build: 1:23 mins to 0:28 mins

The original compile time is already quite fast, but halving it is definitely sweet, and I'm sure more improvements are possible if the source files are modified.

For those who are interested, more details and project file download can be found on my webpage

rogerborg · Post by **rogerborg** » Mon Nov 10, 2008 10:57 am

Thanks, that's very interesting. I've noticed the same decreased build time when using 'Java style classes in C++' which essentially does the same thing: #includes the entire source from one .cpp file.

Yoran · Post by **Yoran** » Mon Nov 10, 2008 12:41 pm

sounds very interesting!

JP · Post by JP » Tue Jan 20, 2009 12:42 pm

I'm bored so I'm bumping this

My company uses unity builds and it's damned impressive the speed it compiles through at, definitely something to go for if you've got lots of things to compile!