efaq: Problems building Emacs
7.2 What should I do if I have trouble building Emacs?
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First look in the file ‘etc/PROBLEMS’ (where you unpack the Emacs
source) to see if there is already a solution for your problem. Next,
look for other questions in this FAQ that have to do with Emacs
installation and compilation problems.
If you’d like to have someone look at your problem and help solve it,
see Help installing Emacs.
If you cannot find a solution in the documentation, please report the
problem (Reporting bugs).