Miscellany

UNQUOTED_BUILD=$$system(echo $$BUILD_PATH |sed -e "s/'//g")
ESCAPED_BUILD=$$system(echo $$UNQUOTED_BUILD |sed -e 's/\//\\\//g')
RELATIVE_BUILD=$$system(echo $$system(pwd) |sed -e 's/$$ESCAPED_BUILD//')
UNQUOTED_SOURCE=$$system(echo $$SRC_PATH |sed -e "s/'//g")
VPATH=$$UNQUOTED_SOURCE$$RELATIVE_BUILD