- $filechk is used to check if a file is up to date. - $cmd includes logic for echoing commands and deleting intermediate files on interrupt. Skip all of that in --dry-run mode and just execute the command.
- $cmd_and_savecmd executes the command and echoes it into .<target>.cmd. - $if_changed_dep executes the command if any dependencies have changed. - $cmd_and_fixdep executes the command and updates .<target>.cmd. Skip all of that in --dry-run mode and just execute the command. Signed-off-by: Vegard Nossum <[email protected]> --- scripts/Kbuild.include | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index ed8a7493524b2..a1ef3b1828bb3 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -94,6 +94,7 @@ kecho := $($(quiet)kecho) # - If no file exist it is created # - If the content differ the new file is used # - If they are equal no change, and no timestamp update +ifndef dry_run define filechk $(check-FORCE) $(Q)set -e; \ @@ -105,6 +106,14 @@ define filechk mv -f $(tmp-target) $@; \ fi endef +else +# simplify and write the output directly if we're just printing +# the commands +define filechk + mkdir -p $(dir $@) + { $(filechk_$(1)); } > $@ +endef +endif ### # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj= @@ -149,8 +158,13 @@ delete-on-interrupt = \ $(foreach sig, HUP INT QUIT TERM PIPE, \ trap 'rm -f $@; trap - $(sig); kill -s $(sig) $$$$' $(sig);)) +ifndef dry_run # print and execute commands cmd = @$(if $(cmd_$(1)),set -e; $($(quiet)log_print) $(delete-on-interrupt) $(cmd_$(1)),:) +else +# just execute (...which will actually "just print" with make -n) +cmd = @$(if $(cmd_$(1)),$(cmd_$(1)),) +endif ### # if_changed - execute command if any prerequisite is newer than @@ -196,17 +210,30 @@ if-changed-cond = $(newer-prereqs)$(cmd-check)$(check-FORCE) # Execute command if command has changed or prerequisite(s) are updated. if_changed = $(if $(if-changed-cond),$(cmd_and_savecmd),@:) +ifndef dry_run cmd_and_savecmd = \ $(cmd); \ printf '%s\n' 'savedcmd_$@ := $(make-cmd)' > $(dot-target).cmd +else +cmd_and_savecmd = $(cmd) +endif +ifndef dry_run # Execute the command and also postprocess generated .d dependencies file. if_changed_dep = $(if $(if-changed-cond),$(cmd_and_fixdep),@:) +else +# Just execute the command directly +if_changed_dep = $(cmd) +endif +ifndef dry_run cmd_and_fixdep = \ $(cmd); \ scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).cmd;\ rm -f $(depfile) +else +cmd_and_fixdep = $(cmd) +endif # Usage: $(call if_changed_rule,foo) # Will check if $(cmd_foo) or any of the prerequisites changed, -- 2.34.1
