bug#33250: 26.1.50; Unable to build emacs-26 branch out of tree on fedora 29

[Pierre Téchoueyres]

Eli Zaretskii <eliz@gnu.org> writes:
>> 
>> I'm attaching the trace file of compilation output.
>> [...]
>>   GEN      ../etc/DOC
>> loaddefs.el: No such file or directory
>> make[1]: *** [Makefile:559: ../etc/DOC] Error 1
>
> I think the above is the root cause.  Where's loaddefs.el being
> generated?
>

I'm unable to find the file.
I tried with the following command:
find . -iname loaddefs.el in my ~/Travail/VCS/Emacs/emacs/emacs-26  directory
It seems the generation of this file has failed.