What options are supported by temacs?

Hi, Fedora's package of XEmacs 20171230hg92757c2b8239 unsuccessfully tries to set user-mail-address to a fixed string "mockbuild(a)fedoraproject.org" to generate reproducible builds of *.elc files (XEmacs puts that information there). While looking into this, I noticed that: | make EMACSDEBUGPATHS=yes XEMACS_BATCH='$(DO_XEMACS) $(BATCH) -eval "(setq user-mail-address \"mockbuild(a)fedoraproject.org\")"' works, but *.elc files compiled early on by temacs still bear the default (in mock environments unpredictable) user-mail-address. So I tried: | make EMACSDEBUGPATHS=yes BATCH='-no-packages -batch -eval "(setq user-mail-address \"mockbuild(a)fedoraproject.org\")"' but that fails with: | ./temacs -nd -no-packages -batch -eval "(setq user-mail-address \"mockbuild(a)fedoraproject.org\")" -l /builddir/build/BUILD/xemacs-beta/src/../lisp/update-elc.el | temacs can only be run in -batch mode. What options are supported by temacs that could be used to set user-mail-address? (My fallback solution is to directly patch lisp/update-elc{,-2}.el, but I'd prefer to resolve the issue at make level if possible.) TIA, Tim P. S.: I tried to subscribe first to this mailing list via https://lists.xemacs.org/, but the link in the "Con- firmation needed" mail redirects to https://lists.xemacs.org/users/address_activation/[40-hex-string]/ and then gives a "Server Error (500)", with the sub- scription request lingering in "pending" state.