Hi all:

I am using Autoconf and Automake in this project of mine:

https://github.com/rdiez/DebugDue/tree/master/Project

If I modify configure.ac by adding and removing a space character (or just issue command "touch 
configure.ac"), files "configure" and "makefile" are regenerated nevertheless.

The new contents are identical, but their timestamps change, possibly 
triggering a rebuild, depending on the makefile rules.

Is there a way to prevent updating the timestamps on 'configure' and 'makefile' 
if the new files are identical?

I thought that Autoconf itself used "install --compare", but probably for 
copying other files, right?

Thanks in advance,
  rdiez

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