date: add a comment about _SVID_SOURCE

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/coreutils/date.c b/coreutils/date.c
index d70957cf6a1aa03f934bc192f488c1c5cbb51f8f..a1a004d4528cb952ddbee8a0804ac26f193b3e98 100644 (file)
--- a/coreutils/date.c
+++ b/coreutils/date.c
@@ -250,7 +250,10 @@ int date_main(int argc UNUSED_PARAM, char **argv)
                ts.tv_sec = statbuf.st_mtime;
 #if ENABLE_FEATURE_DATE_NANO
                ts.tv_nsec = statbuf.st_mtim.tv_nsec;
-               /* some toolchains use .st_mtimensec instead of st_mtim.tv_nsec */
+               /* Some toolchains use .st_mtimensec instead of st_mtim.tv_nsec.
+                * If you need #define SVID_SOURCE 1 to enable st_mtim.tv_nsec,
+                * drop a mail to project mailing list please
+                */
 #endif
        } else {
 #if ENABLE_FEATURE_DATE_NANO