Pekka Paalanen <ppaala...@gmail.com> writes: > On Fri, 11 Apr 2014 11:50:50 -0700 > Eric Anholt <e...@anholt.net> wrote: > >> For anyone that's curious about how I work: >> >> My scripts setup looks a lot like Matt's. I don't do OOT builds, and >> instead I just have 6 main trees: >> >> ~/src/mesa (normal debug build) >> ~/src/mesa-release (non-debug build) >> ~/src/mesa-clean (usually HEAD~1 of ~/src/mesa) >> ~/src/32/mesa >> ~/src/32/mesa-release >> ~/src/32/mesa-clean >> >> The debug build also is with -O2 so that I can actually get >> mostly-representative performance results while developing. REALLY >> IMPORTANT: Don't forget -fno-omit-frame-pointer on 64-bit, otherwise you >> won't get backtraces from sysprof and perf (similarly, in your kernel, >> CONFIG_FRAME_POINTER=y). >> >> I think the most important feature of my setup is the clean builds. By >> having copies of unmodified mesa along with patched mesa, I can use >> http://anholt.net/compare-perf/ to easily produce stats to test whether >> my change is actually having the desired effect. > > Hi Eric, > > just curious, how have you set up git here? > > Do you have a .git/ completely separate in each directory, and if > so, how do you keep them synced? > > Or do you use some GIT_DIR env magic to have a single git repo with > multiple checkouts?
~/src/mesa is a full checkout, while the other 5 are "git clone <upstream> --references ~/src/mesa". Be careful with --references, of course, because it means that a git gc in ~/src/mesa after deleting a branch, where that branch also existed in the other repo, may result in warnings like: error: refs/remotes/anholt/i965-texture-writemask does not point to a valid object! error: refs/remotes/anholt/sched does not point to a valid object! error: refs/remotes/origin/broadwell does not point to a valid object! (and those warnings also mean you can't gc in those trees) It's not a good solution, but OOT builds drive me up the wall and I've never found anything better.
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