macOS fails

[polluks]

cc    -c -o modtime.o modtime.c
modtime.c:168:27: error: no member named 'st_mtim' in 'struct stat'
  168 |                 np->n_tim.tv_sec = info.st_mtim.tv_sec;
      |                                    ~~~~ ^
modtime.c:169:28: error: no member named 'st_mtim' in 'struct stat'
  169 |                 np->n_tim.tv_nsec = info.st_mtim.tv_nsec;
      |                                     ~~~~ ^
2 errors generated.

[rmyorston]

I don't have any MacOS systems, so I can't be sure about what's happening here.

The st_mtim member of struct stat was standardised in POSIX 2008 so it should be available in most modern systems. You may be able to use st_mtime instead, but that only gives a value in seconds so you'd have to set np->n_tim.tv_nsec to zero.

[rmyorston]

Actually, the code used st_mtime originally. See the change to modtime.c in commit 061778e.