On Sun, 25 Jun 2017, Mike Gran wrote: > Follow-up Comment #1, bug #51311 (project make): You've opened this as a > bug. I believe it is not a bug. Again. I'm not a maintainer. > > Please note two things. > > 1. while "MOTD%.log: MOTD%.txt" is a pattern rule, "MOTD%.log: MOTD%.txt > MOTD%.in" is not a pattern rule, because it has two entries after the colon.
This is incorrect. To quote the make info pages, section 10.5.1 "Introduction to Pattern Rules": ----- A pattern rule contains the character `%' (exactly one of them) in the target; otherwise, it looks exactly like an ordinary rule. The target is a pattern for matching file names; the `%' matches any nonempty substring, while other characters match only themselves. ----- There's no restriction in the documention on the number of prequisites on the rule and they may contain any mix of pattern and non-pattern names. See that page and the others in that section for further details. > 2. The '%' (the stem) in a pattern rule doesn't, if I recall correctly, match > a null string. It needs to match at least a single character, so building > MOTD.log won't work. This is correct, as per the documentation quoted above. Philip Guenther _______________________________________________ Bug-make mailing list Bug-make@gnu.org https://lists.gnu.org/mailman/listinfo/bug-make
