Re: Strange Make Error

[Simon Rose via Tech-talk <tech-talk@aps.anl.gov>]

Hi Federico -

Make uses the timestamp on files to detect if a file needs to be updated. It seems that one of your files thinks it was created about 6 years from now.

I've seen this come up in a few odd ways, possibly due to thinks like mounted filesystems on hosts that have different time settings, or improper NTP syncing.

That said, that shouldn't actually cause the build to fail; that's just a warning that something is a bit off with the latest modification time of that file. It can be ignored, although it's probably worth looking at why your file and systems times do not match each other.

Cheers,

Simon

On 2025-07-21, 16:17, "Tech-talk on behalf of Federico Galdenzi via Tech-talk" <tech-talk-bounces@aps.anl.gov <mailto:tech-talk-bounces@aps.anl.gov> on behalf of tech-talk@aps.anl.gov <mailto:tech-talk@aps.anl.gov>> wrote:


Dear Community,


I'm trying to learn EPICS and i started following a pretty simple 
example from Maurizio Monti, stream device exercises. I wanted to create 
a simple EPICS application that controls VPS. However, after setting up 
everything, I get into this error.


make[3]: Attenzione: il file 
"/home/xlabsrv11/epics/configure/RULES_COMMON" ha un orario di modifica 
209019432 nel futuro
Creating dbd file hvps_example.dbd
perl -CSD /home/xlabsrv11/epics/bin/linux-x86_64/dbdExpand.pl -I. -I.. 
-I../O.Common -I../../../dbd 
-I/home/xlabsrv11/epics/synApps_6_3/support/asyn-R4-44-2/dbd 
-I/home/xlabsrv11/epics/synApps_6_3/support/StreamDevice-2-8-24/dbd 
-I/home/xlabsrv11/epics/dbd -o hvps_example.dbd base.dbd
^Cmake[2]: *** [/home/xlabsrv11/epics/configure/RULES_ARCHS:58: 
install.linux-x86_64] Interruzione
make[1]: *** [/home/xlabsrv11/epics/configure/RULES_DIRS:85: 
src.install] Interruzione
make: *** [/home/xlabsrv11/epics/configure/RULES_DIRS:85: 
hvps_exampleApp.install] Interruzione


The "make[3]: warning" translates to " the file ../../.. has a different 
modification time 209019432 in the future".


Can you help me?


ps: as a side note, i'd like to know if you can suggest me some 
resources for learning epics. I'm kinda lost sometimes.