[R-pkg-devel] speeding up package code/build/test cycle

Gábor Csárdi c@@rd|@g@bor @end|ng |rom gm@||@com
Thu Jun 24 23:53:34 CEST 2021

Actually, I see somewhat different things in RStudio, for me there is
no pre-clean (with the default options AFAIR).

I can reproduce the rebuilding for rgl, but not for other packages I
tried. I vaguely remember a similar issue for another package, which
also used autoconf. So this indeed might be a bug in devtools/pkgload
or some unfortunate interplay between load_all() and autoconf's

In general, it seems that both RStudio and devtools just use the
package directory, and the object files are in src/. For all the
packages I tried, I did not see an unneeded full rebuild.


On Thu, Jun 24, 2021 at 11:32 PM Duncan Murdoch
<murdoch.duncan using gmail.com> wrote:
> On 24/06/2021 5:22 p.m., Gábor Csárdi wrote:
> > On Thu, Jun 24, 2021 at 10:31 PM Duncan Murdoch
> > <murdoch.duncan using gmail.com> wrote:
> > [...]
> >> I'm working in RStudio on a Mac, in case that makes any difference.
> >
> > Yes, RStudio probably does its own thing in "Install and restart". The
> > pre-clean of course removes the object files from the package src/
> > directory, so the next load_all() will need to recompile everything.
> But why did step 5 recompile everything?  Here's what you left out of
> the quote:
> > 4.  Click "Install and Restart" button again
> >
> > This is the fast build I was talking about:  no recompiling.
> >
> > 5.  devtools::load_all(".")
> >
> > This does the full compile again, so it's slow.
> Duncan Murdoch

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