So it's easier to add more functionality in following commit.
Link: http://lkml.kernel.org/n/tip-zyle91hokwgwjpm6tjpx2...@git.kernel.org
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
tools/build/Build.include | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/tools/build/Build.include b/tools/build/Build.include
index 4c8daaccb82a..851c420098e7 100644
--- a/tools/build/Build.include
+++ b/tools/build/Build.include
@@ -55,14 +55,19 @@ make-cmd = $(call escsq,$(subst \#,\\\#,$(subst
$$,$$$$,$(cmd_$(1)))))
any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)
###
+# Copy dependency data into .cmd file
+# - gcc -M dependency info
+# - command line to create object 'cmd_object :='
+dep-cmd = cat $(depfile) > $(dot-target).cmd; \
+ printf '%s\n' 'cmd_$@ := $(make-cmd)' >> $(dot-target).cmd
+
+###
# if_changed_dep - execute command if any prerequisite is newer than
# target, or command line has changed and update
# dependencies in the cmd file
if_changed_dep = $(if $(strip $(any-prereq) $(arg-check)), \
@set -e; \
- $(echo-cmd) $(cmd_$(1)); \
- cat $(depfile) > $(dot-target).cmd; \
- printf '%s\n' 'cmd_$@ := $(make-cmd)' >> $(dot-target).cmd)
+ $(echo-cmd) $(cmd_$(1)) && $(dep-cmd))
# if_changed - execute command if any prerequisite is newer than
# target, or command line has changed
--
2.4.3
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