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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2020-01-31 17:42:33 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2020-01-31 17:42:33 -0800 |
| commit | b19efcabb587e5470a423ef778905f47e5a47f1a (patch) | |
| tree | 8863c2233ed8a30d55c4e4029a98c3d7faf359a8 /scripts/Kbuild.include | |
| parent | 996d5d5f89a558a3608a46e73ccd1b99f1b1d058 (diff) | |
| parent | c5ccf2ad3d33413fee06ae87d0b970d8cc540db6 (diff) | |
Merge branch 'next' into for-linus
Prepare input updates for 5.6 merge window.
Diffstat (limited to 'scripts/Kbuild.include')
| -rw-r--r-- | scripts/Kbuild.include | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index 10ba926ae292..bc5f25763c1b 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -210,17 +210,20 @@ endif # (needed for the shell) make-cmd = $(call escsq,$(subst $(pound),$$(pound),$(subst $$,$$$$,$(cmd_$(1))))) -# Find any prerequisites that is newer than target or that does not exist. +# Find any prerequisites that are newer than target or that do not exist. +# (This is not true for now; $? should contain any non-existent prerequisites, +# but it does not work as expected when .SECONDARY is present. This seems a bug +# of GNU Make.) # PHONY targets skipped in both cases. -any-prereq = $(filter-out $(PHONY),$?)$(filter-out $(PHONY) $(wildcard $^),$^) +newer-prereqs = $(filter-out $(PHONY),$?) # Execute command if command has changed or prerequisite(s) are updated. -if_changed = $(if $(any-prereq)$(cmd-check), \ +if_changed = $(if $(newer-prereqs)$(cmd-check), \ $(cmd); \ printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:) # Execute the command and also postprocess generated .d dependencies file. -if_changed_dep = $(if $(any-prereq)$(cmd-check),$(cmd_and_fixdep),@:) +if_changed_dep = $(if $(newer-prereqs)$(cmd-check),$(cmd_and_fixdep),@:) cmd_and_fixdep = \ $(cmd); \ @@ -230,7 +233,7 @@ cmd_and_fixdep = \ # Usage: $(call if_changed_rule,foo) # Will check if $(cmd_foo) or any of the prerequisites changed, # and if so will execute $(rule_foo). -if_changed_rule = $(if $(any-prereq)$(cmd-check),$(rule_$(1)),@:) +if_changed_rule = $(if $(newer-prereqs)$(cmd-check),$(rule_$(1)),@:) ### # why - tell why a target got built @@ -255,7 +258,7 @@ ifeq ($(KBUILD_VERBOSE),2) why = \ $(if $(filter $@, $(PHONY)),- due to target is PHONY, \ $(if $(wildcard $@), \ - $(if $(any-prereq),- due to: $(any-prereq), \ + $(if $(newer-prereqs),- due to: $(newer-prereqs), \ $(if $(cmd-check), \ $(if $(cmd_$@),- due to command line change, \ $(if $(filter $@, $(targets)), \ |