There is always interest in a new build system as there is little belief that our current build system is actually good. The issues are typically
* Finding someone willing to work on it
* Finding someone with the time to work on it
* Covering all current use cases
* Having enough people understand it to provide maintenance
The problem with a new build system is it tends to be a bit all or nothing. If it cannot be used for all use cases then it needs to at least integrate with projects and libraries that are still on the old build system, typically creating an annoying maintenance scenario.
Not trying to dissuade or discourage you, but it is hard to change a piece of infrastructure like this. Especially as you cannot necessarily see use cases that we haven't published or made public yet.

Adrian

On Tue 28-Jul-2015 4:45 AM, Wink Saville wrote:

In my opinion the edit/compile/test loop with the standard build system seeed slow, so I thought I'd try to see if CMake might be any better. Here is repo manifest which uses CMake for building my sel4-newlibs helloworld application and I'm happy to report there is some improvement.

For a "clean" build it is about 2x faster, 8 seconds as compared to 14 seconds. And for a small change to apps/helloworld/src/main.c it is 20x faster, 0.3 seconds as compared to 7 seconds.

Is there any interest in using CMake or other build system to reduce the builds times for seL4?

-- Wink
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