kbuild: de-duplicate fixdep usage

Backported from the linux kernel
commit e4aca4595005 ("kbuild: de-duplicate fixdep usage")

A lot of the kernels kbuild depend on that patch. Backport it and pull in
the 'rule_as_o_S'a rule as well. This might end up being unused but it
doesn't break anything and makes diffing the files easier.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

scripts/Kbuild.include

@@ -266,10 +266,13 @@ if_changed = $(if $(strip $(any-prereq) $(arg-check)),                       \
 # Execute the command and also postprocess generated .d dependencies file.
 if_changed_dep = $(if $(strip $(any-prereq) $(arg-check) ),                  \
 	@set -e;                                                             \
+	$(cmd_and_fixdep), @:)
+
+cmd_and_fixdep =						             \
 	$(echo-cmd) $(cmd_$(1));                                             \
 	scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp;\
 	rm -f $(depfile);                                                    \
-	mv -f $(dot-target).tmp $(dot-target).cmd, @:)
+	mv -f $(dot-target).tmp $(dot-target).cmd;
 
 # Usage: $(call if_changed_rule,foo)
 # Will check if $(cmd_foo) or any of the prerequisites changed,

scripts/Makefile.build

@@ -241,14 +241,17 @@ endif
 
 define rule_cc_o_c
 	$(call echo-cmd,checksrc) $(cmd_checksrc)			  \
-	$(call echo-cmd,cc_o_c) $(cmd_cc_o_c);				  \
+	$(call cmd_and_fixdep,cc_o_c)					  \
 	$(cmd_modversions)						  \
-	$(call echo-cmd,record_mcount)					  \
-	$(cmd_record_mcount)						  \
-	scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' >    \
-	                                              $(dot-target).tmp;  \
-	rm -f $(depfile);						  \
-	mv -f $(dot-target).tmp $(dot-target).cmd
+	$(cmd_objtool)							  \
+	$(call echo-cmd,record_mcount) $(cmd_record_mcount)
+endef
+
+define rule_as_o_S
+	$(call cmd_and_fixdep,as_o_S)
+	$(call cmd,gen_ksymdeps)
+	$(call cmd,objtool)
+	$(call cmd,modversions_S)
 endef
 
 # Built-in and composite module parts