If like me you've been bitten by:
dmake.exe: Error: -- `C:\Perl\libConfig.pm' not found, and can't be m
Certainly follow the excellent advice at Re^2: how to install perlmodules in windowsXP but pay particular attention to the aside about renaming nmake.exe In my case I not only had it installed in c:\perl\bin, but for some reason in c:\program files\mozilla— don't know why just did. Repeat your usage of "perl -V:make" until it shows dmake. Don't forget to run makefile again so that this time the correct information will be set.
The question in the title is— what does "dmake.exe: Warning: -- Target [blibdirs] was made but the time stamp has not been updated." mean? I typically get some number (variable) of these. Since they are warnings, I ignore them, but the compulsive in me wants to know what I'm ignoring on the off chance that it is somehow significant...
"Never try to teach a pig to sing...it wastes your time and it annoys the pig."