how to use already existing .d files

[Swapna Pawar]

Hi,

How can I make gcc use the existing dependency (.d) files, without generating 
new dependency (.d) files.
Assumption here is that I already have the dependency (.d) files available, 
which are created using the following command,

gcc -MM -MP -MF "$(@:%.o=%.d)" -MT "$(@:%.o=%.d)"....

I have tried the following:


1.    Generate both .0 and .d - this works as expected with following commands:

%.o %.d: %.c

            gcc -MM -MP -MF "$(@:%.o=%.d)" -MT "$(@:%.o=%.d)"  -x c "$<"

            gcc -c -x c -o "$(@:%.d=%.o)" "$<"



Now if I am not able to find a makefile rule to reuse these generated 
dependency, without regenerating them.



2.    I have also tried the solutions suggested in the following links, but no 
success:
http://stackoverflow.com/questions/16639615/automatically-generating-dependency-in-make-and-including-them-in-dependency-lis
http://locklessinc.com/articles/makefile_tricks/

Any help is highly appreciated.


Regards,
Swapna

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