On Wed, 10 Mar 2010 06:05:11 -0500 "Patrick M. Rutkowski" <rutski89@xxxxxxxxx> wrote: >On Wed, Mar 10, 2010 at 5:24 AM, <mpsuzuki@xxxxxxxxxxxxxxxxx> wrote: >> A possible approarch might be "install-only-different-files". >> "install" of GNU coreutils has an option "-p" to preserve the >> timestamp of source file. If it works well, although all headers >> & libraries are reinstalled, the timestamps of unchanged files >> are not updated, so rebuilding of the application would be >> minimized. > >You mention this "install-only-different-files"? What exactly is that? >I can't find docs anywhere. install(1)'s -p option looks like it just >blindly neglects to update the timestamp, I don't think it actually >checks the file content to see if things have changed. I'm sorry for my wrong wording. Yes, "-p" does not check the content of the files. The scenario I thought was: * "install -p" sets the mtime of installed file with its source file. * if the source file is not changed after previous installation, its mtime is not changed after previous installation. * even when the file is re-installed, if its mtime is not updated, make cannot detect the re-installation of the file. * therefore, building of application after re-installation of library would be minimized for the updated part only. Regards, mpsuzuki _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
