Installation output for macosx

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 

Error: extension is not targeted for this system: "macosx"
retrieving ...
checking platform for `macosx' ...