Stefano, This is a bug, and it has been described and fixed here: https://savannah.gnu.org/patch/?7534
2012/5/12 Stefano Lattarini <stefano.lattar...@gmail.com> > Hello. > > While trying to implement a kind of memoization of lazy macros in GNU make > (needed for my work on Automake-NG), I've been encountering some strange > failure in GNU make (present in all of 3.80, 3.81, 3.82). Here is the > minimal reproducer I've been able to find: > > mufoofoo = \ > xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \ > xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \ > xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \ > xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \ > xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \ > xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \ > xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \ > xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \ > xxxxxxxxxxxx > var = $(eval var := $$(mufoofoo))$(var) > dummy: > : $(firstword $(var)) > > Running the above, make dies with the following message: > > Makefile:13: *** unterminated variable reference. Stop. > > And any of the following minimal and *apparently irrelevant* changes to the > Makefile above that cause the error to disappear: > > - changing 'var' with 'va' everywhere > - changing 'mufoofoo' with 'mfoofoo' > - removing *just one 'x'* from the value of mufoofoo > > Any idea of what's going on here? > > Regards, > Stefano > > _______________________________________________ > Bug-make mailing list > Bug-make@gnu.org > https://lists.gnu.org/mailman/listinfo/bug-make > -- Best regards, Eldar Sh. Abusalimov
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