On 1 Sep 2025, at 23:28, Brian <br...@sonicboom.org> wrote: > > I am not sure when this changed, but I often test building the system just to > do it, often with ccache. What I am seeing is that in 14.x systems, ccache > shows a total number of ccache hits and misses in the low 40k range, whereas > in 15 it is much less, often 2-3k. Of course the build moves more quickly. Is > this tech to only build what is related to code changes?
This is probably because 15-CURRENT uses WITHOUT_CLEAN by default, since 2025-08-19 at least. On 14.x, this is not the case. You might find that there is less difference between the two, if you put WITHOUT_CLEAN in your src.conf. -Dimitry
