Re: Moving Target in the Makefile

[Paul D. Smith]

%% "Chen, Shihong" <address@hidden> writes:

  cs> The final action of our makefile is to have the executables and
  cs> header files moved to the build directory using INSTALL, which
  cs> will always override the previous one even there is no change. Is
  cs> that a single command to do it more intelligently?  Basically, the
  cs> file difference will be checked first before the copying, so the
  cs> previous timestamp will be kept if there is no change with the
  cs> former build.

If what you're describing here is what you _want_ to happen, you can
easily do this with a command something like this:

   cmp -s $@ $< && $(INSTALL) $@ ...

Is that what you're looking for?

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