The file you are referring to is actually a binary distribution that does not need to be compiled anymore. -- Lenz Grimmer ...
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ID▼ Status Resolution Sev Product Comp Assignee▲ Reporter Summary
1504 CLOS FIXE nor Sisyphus emacs21- ott vanyaz buildreq detects it if running emacs for compilation

File a new bug in the "emacs21-el" component of the "Sisyphus" product