[CRIU] [PATCH 4/9] nmk: build.mk -- Make process depend on Makefile itself

[Dmitry Safonov]

On 03/23/2016 02:43 PM, Pavel Emelyanov wrote:
>> @@ -46,6 +47,16 @@ builtin-name	:= $(strip $(builtin-name))
>>   ld_flags	:= $(strip $(LDFLAGS) $(ldflags-y))
>>   
>>   #
>> +# $(obj) related rules.
>> +$(eval $(call gen-rule-o-from-c-by-name,$(obj)/%,$(obj)/%,$(src-makefile)))
>> +$(eval $(call gen-rule-i-from-c-by-name,$(obj)/%,$(obj)/%,$(src-makefile)))
>> +$(eval $(call gen-rule-s-from-c-by-name,$(obj)/%,$(obj)/%,$(src-makefile)))
>> +$(eval $(call gen-rule-o-from-S-by-name,$(obj)/%,$(obj)/%,$(src-makefile)))
>> +$(eval $(call gen-rule-d-from-c-by-name,$(obj)/%,$(obj)/%,$(src-makefile)))
>> +$(eval $(call gen-rule-d-from-S-by-name,$(obj)/%,$(obj)/%,$(src-makefile)))
>> +$(eval $(call gen-rule-i-from-S-by-name,$(obj)/%,$(obj)/%,$(src-makefile)))
> Please enlighten me. We're making o-from-c, i-from-c, s-from-c, blah-blah-blah
> for a makeifle?
No, it's here as a dependency: the first patch in this set adds
the third parameter to each of gen-rules:
 >+$(1).o: $(2).c $(3)
so that each generated o/i/s/d file will depend on this parameter 
(makefile).
Which will lead to recompilation of object files in a directory, where
makefile has changed.
>
>> +
>> +#
>>   # Prepare targets.
>>   ifneq ($(lib-y),)
>>           lib-target :=


-- 
Regards,
Dmitry Safonov