portability for sftp globbed ls sort by mtime

Include replacement timespeccmp() for systems that lack it.
Support time_t struct stat->st_mtime in addition to
timespec stat->st_mtim, as well as unsorted fallback.

1 files changed, 8 insertions, 2 deletions

diff --git a/sftp.c b/sftp.c
index 001c6ed2d..67110f738 100644
--- a/sftp.c
+++ b/sftp.c
@@ -894,9 +894,15 @@ sglob_comp(const void *aa, const void *bb)
 #define NCMP(a,b) (a == b ? 0 : (a < b ? 1 : -1))
         if (sort_flag & LS_NAME_SORT)
                 return (rmul * strcmp(ap, bp));
-        else if (sort_flag & LS_TIME_SORT)
+        else if (sort_flag & LS_TIME_SORT) {
+#if defined(HAVE_STRUCT_STAT_ST_MTIM)
                 return (rmul * timespeccmp(&as->st_mtim, &bs->st_mtim, <));
-        else if (sort_flag & LS_SIZE_SORT)
+#elif defined(HAVE_STRUCT_STAT_ST_MTIME)
+                return (rmul * NCMP(as->st_mtime, bs->st_mtime));
+#else
+        return rmul * 1;
+#endif
+        } else if (sort_flag & LS_SIZE_SORT)
                 return (rmul * NCMP(as->st_size, bs->st_size));
 
         fatal("Unknown ls sort type");