upgrade from 4.8 to 5.1

[danu kusmana]

hi guys

I tried to upgrade from 4.8 to 5.1 and always failed
when I tried to make buildworld. I use cvsup or
download the source from ftp server and the results is
always the same. It stop on libpthread error 1. Is it
the source I got have a bug or something?

Now I use the 5.2Beta :( It cannot use the USB device
correcrtly and I cannot compile everything that needs
perl languange. It said /usr/bin/ld -ldl not found. I
dont know whats wrong with this.

Please help me out. 

Thanx

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