bug#51343: 27.2; Xaw3d scrollbar thumb doesn't update while dragged

[Glenn Morris]

Po Lu wrote:

> Is there anything in particular that I'm missing and can be used to
> speed up the build?

You don't need to compile all the lisp files for this kind of problem.
For bisecting, I use:

make maintainer-clean >& /dev/null
autoreconf -fi -I m4
./configure [...] --cache-file=/tmp/ccache
make -C lib [-j #] all
make -C src [-j #] emacs