n2, an alternative ninja implementation
n2 (pronounced "into") implements enough of ninja to successfully build some projects that build with ninja.
I wrote it to explore some alternative ideas I had around how to structure a build system.
Here's a small demo of n2 building some of Clang.
More reading
Differences from Ninja
n2 is missing many Ninja features.
n2 does some things Ninja doesn't:
- Builds start tasks as soon as an out of date one is found, rather than gathering all the out of date tasks before executing.
- Fancier status output, modeled after Bazel.
-d trace
generates a performance trace as used by Chrome'sabout:tracing
or alternatives (speedscope, perfetto).