[DEPRECATED-TUT] Speeding up compile times.

[avindra]

The following is for archival purposes only. The latest builds of Dolphin now have this by default.

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Note: This is for people seeking to compile dolphin builds from the repository. There is a site which compiles builds (although each takes an indefinite amount of time to start, and approx. 15 minutes to compile + upload).

My experience: My compile time has been reduced from 5 minutes to about a minute. I'm sure the only limiting factor now is my hard drive speed (don't have a solid state).

Tutorial (vs2008): (Note that this can be applied to any C++ project, not just dolphin):

1) Open the solution for Dolphin.
2) Right click on "Core".
3) Choose "Properties".
4) Go to Configuration Properties > C/C++ > Command Line.
5) In "Additional options", type "/MP" without quotes.
6) Compile, and note a significantly faster compile time. So far, I've discovered no pitfalls in using the MP (multiple processor) command option.

Assuming you have a relatively new processor, the limiting factor now should be your hard drive speed, unless you have a solid-state drive, in which case the limiting factor is probably still your processor.

You can read more about the MP option @ MSDN.

Note that if you want, you can specify the number yourself, or let Visual Studio determine the number of effective cores, which is in my case, 8.

[TheBboyKnowledge]

thanks, on my 5400rpm hard drive i got a faster compiling times!

if only i had a 10,000 rpm hard drive.....(dreaming)

[James333]

Theoretically this could be applied to all the projects. Right ?

[avindra]

All C++ projects, yes. If you're referring to all the projects in Dolphin, I'm not sure.

I assumed only "Core" needs to be set, because it's the startup project, but I may be wrong. I'll try setting this on every project and let you guys know if it compiles any faster.

EDIT: Seems to be about the same speed for me, setting MP on every project. Can someone else try it out and let us know if it makes a difference?

EDIT2: I've submitted a patch, so hopefully this will be integrated into dolphin.

[LuisR14]

hehe