kbuild: let fixdep directly write to .*.cmd files
Backport from kernel
commit 392885ee82d3 ("kbuild: let fixdep directly write to .*.cmd files")
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index d90b0b7..2f2d5d4 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -410,14 +410,17 @@
# optimization, we don't need to read them if the target does not
# exist, we will rebuild anyway in that case.
-cmd_files := $(wildcard $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd))
+existing-targets := $(wildcard $(sort $(targets)))
-ifneq ($(cmd_files),)
- include $(cmd_files)
-endif
+-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
# Create directories for object files if they do not exist
obj-dirs := $(sort $(obj) $(patsubst %/,%, $(dir $(targets))))
+# If targets exist, their directories apparently exist. Skip mkdir.
+existing-dirs := $(sort $(patsubst %/,%, $(dir $(existing-targets))))
+obj-dirs := $(strip $(filter-out $(existing-dirs), $(obj-dirs)))
+ifneq ($(obj-dirs),)
$(shell mkdir -p $(obj-dirs))
+endif
.PHONY: $(PHONY)