Idea: Standard way to negate special targets Problem:
Sometimes you want to set a default value using a special target, but in a few cases you want to *disable* the special target. For example, you might want to use: .ONESHELL: for *almost* all the rules, except for a few rules where you want to *disable* .ONESHELL. There currently isn't a way to do this. Proposed solution: Add a syntax to *disable* a special target for a particular rule. I propose that it be a whitespace-surrounded "!" in the prerequisites followed by the special target being disabled. E.g.: ~~~~ .ONESHELL: tricky_target: ! .ONESHELL prerequisite ~~~~ Having a reusable syntactic solution seems better than having weird special cases. It means there's less to remember (the same approach works every time) and it's easy to generalize. I propose that disabling a special target *NOT* be inherited. If you call on something else, and it wants to disable a special target, then it has to do the same thing. I know of no other use for "!" in prerequisites. If that's not okay, perhaps ".NOT" would be a good alternative. --- David A. Wheeler _______________________________________________ Bug-make mailing list Bug-make@gnu.org https://lists.gnu.org/mailman/listinfo/bug-make
