Installation output for qt

Installation time: 0.0s

CHICKEN_INSTALL_PREFIX=/root/src/salmonella/salmonella-4.5.0/repo CHICKEN_INCLUDE_PATH=/root/src/salmonella/salmonella-4.5.0/repo/share/chicken CHICKEN_REPOSITORY=/root/src/salmonella/salmonella-4.5.0/repo/lib/chicken/5 /usr/local/chicken-4.5.0/bin/chicken-install  -prefix /root/src/salmonella/salmonella-4.5.0/repo 
retrieving ...
checking platform for `qt' ...
checking dependencies for `qt' ...
install order:
("qt")
installing qt: ...
changing current directory to .
  /usr/local/chicken-4.5.0/bin/csi -bnq -setup-mode -e "(require-library setup-api)" -e "(import setup-api)" -e "(extension-name-and-version '(\"qt\" \"\"))" -e "(destination-prefix \"/root/src/salmonella/salmonella-4.5.0/repo\")" qt.setup

Error: please set the QTDIR environment variable

	Call history:

	setup-api.scm: 702  string-split-fields		
	setup-api.scm: 701  string->number		
	loop14701483		
	setup-api.scm: 701  string->number		
	loop14701483		
	setup-api.scm: 701  string->number		
	loop14701483		
	setup-api.scm: 711  loop			<--

Error: shell command terminated with nonzero exit code
17920
"/usr/local/chicken-4.5.0/bin/csi -bnq -setup-mode -e \"(require-library setup-a...