In our documentation we generally assume that the user is navigating
from the top-level of the core distribution. If so, then to compile a C
program found in Porting/ the user would simply 'cd Porting' rather than
'cd perl/Porting'.
use timecheck.c in the Porting directory to check those values yourself,
using the same technique that is used in Configure based on bit-shifting:
- $ cd perl/Porting
+ $ cd Porting
$ cc -O -o timecheck timecheck.c
$ ./timecheck
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