LLVM requires the most time, and the version has not been bumped so recompile will not be required. OpenBLAS is probably second and it has been bumped, so will require recompile. By the way, to track 0.4-pre (development version) you need `git checkout master`.
However, do be aware that there is *a lot* of breakage in packages running against 0.4-dev right now due to some recent changes (see recent threads here and on julia-dev). Many packages are still catching up. Running 0.4 is not recommended right now unless you are fixing packages, or you know that any packages you need have been updated. See status here: http://pkg.julialang.org/pulse.html On Sat, Apr 25, 2015 at 10:02 PM, Sisyphuss <[email protected]> wrote: > I built Julia v0.3 from the source code. It took me a lot of time. > > Now if I want to "git checkout v0.4", will it take me a lot of time to > build again? >
