Compiling and Building FG again with new c++ code

[gierschi@flightgear]

Hey guys,

I have done some small changes in the FG c++ source code (just in the file FGWinds.cpp) and have still installed FG on my Linux computer. Now I want built a new FG version with the modified code. How can I do this without compiling each file again. This would last maybe 10/15 minutes (I have tested it) and that method is not a good idea to check if small changes in the code work. My Folder structure is the following:

Source code at /localdata/giersch/src/flightgear.git/*
Flightgear version 1 at /localdata/giersch/FG-3.6-v1/*
$FG_ROOT at /localdata/giersch/FG-3.6-v1/fgdata

Thank you very much in advance for an answer.

[Thorsten]

Even on my really old system with me being anything but a CMake wizard, it happens automagically that when I change one file, only that file (and the dependent ones) is recompiled, not everything.

So I guess it's down to configuring your build environment

[bugman]

CMake will take care of all of that for you, if you use the CMake build system. Only the changed files will be recompiled.

Regards,
Edward

[Hooray]

Besides, by using ccache (and possibly distcc), you can massively speed up compilation even further

[gierschi@flightgear]

Thanks for the hints.

Can you tell me the exact command you are using? Do i have set some cmake option? And where can I find the precompiled files from my first version I've already built?