Paul Smith
Tue, 13 Dec 2011 15:47:06 -0800
On Tue, 2011-12-13 at 14:38 -0800, Mark Galeck (CW) wrote: > I need all these things, yet, I want the rule for target% to only > apply if prerequisite0% actually exists. I do not want to chain with > the rule for prerequisite0%, I do want to chain with the rule for > prerequisite1%. > > If I put target%:, I chain with both. If I put target%::, I chain > with none. I want to chain with exactly one of them.
Nope, nothing like that is possible. The best you can do is set a target-specific variable on target%, then in the rule for prerequisite0% you can see if the variable is set and if so and the target file (prerequisite0%) doesn't exist, you can fail. However, that doesn't stop the chaining behavior (so any prerequisites of prerequisite0% will still be checked and rebuilt) etc. -- ------------------------------------------------------------------------------- Paul D. Smith <psm...@gnu.org> Find some GNU make tips at: http://www.gnu.org http://make.mad-scientist.net "Please remain calm...I may be mad, but I am a professional." --Mad Scientist _______________________________________________ Help-make mailing list Help-make@gnu.org https://lists.gnu.org/mailman/listinfo/help-make