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akkigupta 07-20-2009 04:32 AM
Comparing 2 files in linux makefile system
 
Hi all,

I want to copy one file from source folder to destination folder using Makefile in Linux enviornment. I want to make sure it happens only if destination folder doesnt have updated file.

Can you guide me how can i compare 2 files in makefile?

Tinkster 07-20-2009 04:53 AM
Hi,

Welcome to LQ!

And while this certainly could be achieved with make ...
why don't you use a tool that's designed for that task,
like for example rsync or unison?



Cheers,
Tink

akkigupta 07-20-2009 04:59 AM
Hi Tinkster, Thanks for your reply.

I was seeing the usage of the tools you mentioned. But it doesnt seems applicable to my enviornment. My enviornment already has the makefile system, which we are using to build a binary. In that we require to copy certain configuration file, if there is any updation. So looking for such kind of solution.

Can you tell me how we can achieve the same ?

Valery Reznic 07-21-2009 02:47 AM
Quote:
Originally Posted by akkigupta (Post 3613583)
Hi all,

I want to copy one file from source folder to destination folder using Makefile in Linux enviornment. I want to make sure it happens only if destination folder doesnt have updated file.

Can you guide me how can i compare 2 files in makefile?
After all make run regular commands.
You can use
Code:
cmp $(SRC_FILE) $(DST_FILE) 2>/dev/null || cp -f $(SRC_FILE) $(DST_FILE)


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