On Tue, Jul 5, 2022 at 5:19 AM Edward Welbourne <edward.welbou...@qt.io> wrote: > I would have expected the order to be the exact reverse of the > order of building:
i guess, an example will make it more clear. $ cat makefile .SECONDEXPANSION: all: hello.tsk bye.tsk hello.tsk: $$(info 2nd expansion of prereqs of $$@); $(info $@) bye.tsk: $$(info 2nd expansion of prereqs of $$@); $(info $@) $ # this is patched make $ ~/src/make/l64/make 2nd expansion of prereqs of hello.tsk hello.tsk 2nd expansion of prereqs of bye.tsk bye.tsk make: Nothing to be done for 'all'. $ # this is make-4.3 $ make 2nd expansion of prereqs of bye.tsk 2nd expansion of prereqs of hello.tsk hello.tsk bye.tsk make: Nothing to be done for `all'. $ You can see that make-4.3 builds 'hello.tsk' before building 'bye.tsk'. The order of secondary expanding prerequisites is the opposite, first the prerequisites of 'bye.tsk' are expanded, then the prerequisites of 'hello.tsk'. The proposed behavior is to secondary expand the prerequisites of 'hello.tsk", build 'hello.tsk', secondary expand the prerequisites of 'bye.tsk', build 'bye.tsk'. regards, Dmitry
