[PATCH v4 13/14] kbuild: add cmd_and_savecmd macro
From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2022-05-08 19:19:48
Also in:
linux-kbuild, linux-modules, linux-s390, lkml
Subsystem:
kernel build + files below scripts/ (unless maintained elsewhere), the rest · Maintainers:
Nathan Chancellor, Nicolas Schier, Linus Torvalds
Separate out the command execution part of if_changed, as we did
for if_changed_dep.
This allows us to reuse it in if_changed_rule.
define rule_foo
$(call cmd_and_savecmd,foo)
$(call cmd,bar)
endef
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <redacted>
---
Changes in v4:
- New.
Resent of my previous submission.
https://lore.kernel.org/all/20210831074004.3195284-10-masahiroy@kernel.org/ (local)
scripts/Kbuild.include | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 455a0a6ce12d..ece44b735061 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include@@ -142,9 +142,11 @@ check-FORCE = $(if $(filter FORCE, $^),,$(warning FORCE prerequisite is missing) 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), \ +if_changed = $(if $(if-changed-cond),$(cmd_and_savecmd),@:) + +cmd_and_savecmd = \ $(cmd); \ - printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:) + printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd # Execute the command and also postprocess generated .d dependencies file. if_changed_dep = $(if $(if-changed-cond),$(cmd_and_fixdep),@:)
--
2.32.0