Hi Greg, It is how my makefiles work :)
Do you realize how much time it takes to load the stat executable on all source files and object files? Conditional expressions are already in memory. I prefer using the mtime field, the atime field and conditional expressions. Mischa. On Fri, Nov 12, 2021 at 1:25 PM Greg Wooledge <g...@wooledge.org> wrote: > On Fri, Nov 12, 2021 at 10:36:01AM +0100, Mischa Baars wrote: > > All of my makefiles only compile source files and link object files that > > are NEW, as in the modification timestamp is newer than OR EQUAL TO the > > access timestamp, > > That's not how Makefiles work. > > Makefiles compare the mtimes of two files against each other. Source > and target. If the source's mtime is greater than the target's mtime, > then the target needs to be rebuilt. > > Most Linux distributions these days are disabling or half-disabling > the atime field at the file system mount-option level, because of the > tremendous inefficiency and wear on disks that it creates. > >
