bin/50557: build.sh does not run on Nixos

[paspanag%gmail.com@localhost]

>Number:         50557
>Category:       bin
>Synopsis:       build.sh does not run on Nixos
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 15 05:05:00 +0000 2015
>Originator:     Peter Panaguiton
>Release:        
>Organization:
>Environment:
Linux nixie 4.2.6 #1-NixOS SMP Thu Jan 1 00:00:01 UTC 1970 x86_64 GNU/Linux

>Description:
In Nixos, the build.sh fails because of TOP being assigned with /bin/pwd which does not exist in Nixos.

This was run using buildrump.sh from https://github.com/rumpkernel/buildrump.sh/

>How-To-Repeat:
clone https://github.com/rumpkernel/buildrump.sh/
run buildrump.sh (this will invoke build.sh)


>Fix:
Changing /bin/pwd to just pwd, in build.sh fixed it for me. I understand this might not be the proper way.