Re: [Gems-users] "warning : Clock skew detected" in ruby compilation

[Dan Gibson <degibson@xxxxxxxx>]

This happens when you're compiling on a virtual machine, and your host machine supports dynamic frequency modulation. There is a fix to the issue... you can find it on google.

Mike Marty wrote:

While Make is doing its timestamp-based dependency check, the timestamps
on some of your files appeared to be in the future...hence the clock skew
detected message

It is not a GEMS thing.  Sounds like an issue on your host system.

--Mike


  

Hi All,
I was compiling ruby (gems 1.3) in simics 3.0.14. At the end of
compilation I am getting the following warning. (ruby seems working
fine). Does anybody know why is that coming or is there any potential
problem for that warning?
---------------------------------
Template closure done
Made module
make[1]: warning:  Clock skew detected.  Your build may be incomplete.
make[1]: Leaving directory `/home/vax2/u2/hossain/G3S364/ruby'
Ruby: Linking simics module
cd ../simics; make ruby
make[1]: Entering directory `/home/vax2/u2/hossain/G3S364/workspace'
=== Building module "ruby" ===
make[2]: Entering directory
`/home/vax2/u2/hossain/G3S364/workspace/amd64-linux/obj/modules/ruby'
make[2]: Warning: File
`/home/vax2/u2/hossain/G3S364/workspace/modules/../../ruby/amd64-linux/generated/MOSI_SMP_bcast/obj/util.d'
has modification time 51 s in the future
Using the Simics 3.0 API for ruby module
CCLD    ruby.so
make[2]: warning:  Clock skew detected.  Your build may be incomplete.
make[2]: Leaving directory
`/home/vax2/u2/hossain/G3S364/workspace/amd64-linux/obj/modules/ruby'
make[1]: Leaving directory `/home/vax2/u2/hossain/G3S364/workspace'
Ruby: Moving simics module
make BUILD_FLAGS=-DSIMICS movemodule
make[1]: Entering directory `/home/vax2/u2/hossain/G3S364/ruby'
../scripts/prepare_simics_home.sh ../simics/home/MOSI_SMP_bcast amd64-linux
make[1]: Leaving directory `/home/vax2/u2/hossain/G3S364/ruby'
Ruby: my work is done here...



Thanks.
----------
Hemayet Hossain
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