[CMake] Timestamps...

[Lars Pechan]

Hi there,
I have little timestamp problem that I can't get my head around. This 
is what happens:

1) I have an out-of-source build directory called "buildroot".
2) Buildroot is quite a big tree (which shouldn't make any difference).
3) In order to build a particular library in buildroot I need to copy 
in an rc-file ("app.rc") to two locations: buildroot/X/app.rc and 
buildroot/Y/app.rc.. (Legacy reasons -- don't ask...)
4) I first copy it to buildroot/X/app.rc
5) It then gets copied into buildroot/Y/app.rc.
6) (The copying is done via custom commands where buildroot/Y/app.rc 
depends on buildroot/X/app.rc).
7) This all works fine but this rule is nearly always firing!!
8) Looking at the timestamps I see that the buildroot/Y/app.rc is older 
than buildroot/X/app.rc!! Ie the copy is older than its original?? The 
difference is about one second. This happens most of the time but not 
always? Sometimes the source is older as it should be.
9) (The copying is driven by a request for buildroot/Y/app.rc but in 
order for that to happen the file has to be copied over to 
buildroot/X/app.rc first)

My question:  Either I have completely lost my marbles or there is some 
dodgy race condition here?

Any ideas?

/Lars