bug#52376: 28.0.90; libdir is missing from native-comp-eln-load-path with GTK3 build

[Eli Zaretskii <eliz@gnu.org>]

> From: Bhavin Gandhi <bhavin7392@gmail.com>
> Date: Sun, 2 Jan 2022 00:34:19 +0530
> Cc: 52376@debbugs.gnu.org
> 
> On Sat, 1 Jan 2022 at 22:57, Eli Zaretskii <eliz@gnu.org> wrote:
> > I don't know yet.  The root cause is probably something that causes a
> > complete rebuild in the build-gtk tree when you say "make install",
> > although you already built it before.  Can you figure out why it
> > rebuilds it?  Then we can reason about that cause, whether it's
> > expected or not.
> 
> This is what it shows when I run make install, can you please help me
> with any pointers to figure out why it rebuilds?
> 
> sudo make -O -j8 V=1 VERBOSE=1 install
> 
> << At this point the prompt is actually blank for a while and then
> shows the following output.
> 
> if [ -x ./config.status ]; then    \
>      ./config.status --recheck;    \
> else                \
>      ../configure --cache-file=/dev/null; \
> fi
> running CONFIG_SHELL=/bin/sh /bin/sh ./configure

So config.status either doesn't exist or isn't executable?  Why not?

And what is "." in this case -- is it the build directory or the
source directory?