On 2022-08-24 21:23:13 +0200, Vincent Lefevre wrote: > I'll update the MPFR text later in order to clarify it and give more > details. The text on https://www.mpfr.org/mpfr-current/ is now: Because make's rebuild decisions are based on timestamps, the -Z option is highly recommended: it sets the modification time of the patched files from timestamps given in the patch file, thus avoiding unnecessary rebuilds that could need some development utilities (such as autoconf); for the special PATCHES file, this may generate a "Not setting time" warning, which you can safely ignore. If the -Z option is not available, you can also avoid the unnecessary rebuilds by using the --disable-maintainer-mode configure option later. -- Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)