I am trying to run the following subst command to replace one string /var/jenkins_home with another /srv/jenkins-slave-1/data so that the value in HOST_LOG_DIR changes from /var/jenkins_home/workspace/ts_myapp_testing_integration-tests to /srv/jenkins-slave-1/data/workspace/ts_myapp_testing_integration-tests
but when I run the makefile target substtest the value of HOST_LOG_FILE remains unchanged (please see screenshot).
WORKSPACE := "/var/jenkins_home/workspace/ts_myapp_testing_integration-tests" JENKINS_HOME := "/var/jenkins_home" JENKINS_HOME_HOST_PATH := "/srv/jenkins-slave-1/data" HOST_LOG_DIR := $(subst $(JENKINS_HOME),$(JENKINS_HOME_HOST_PATH),$(WORKSPACE)) .PHONY: substtest, print_env substtest: print_env print_env: @echo "WORKSPACE is ${WORKSPACE}" @echo "JENKINS_HOME is ${JENKINS_HOME}" @echo "JENKINS_HOME_HOST_PATH is ${JENKINS_HOME_HOST_PATH}" @echo "HOST_LOG_DIR is ${HOST_LOG_DIR}"][1]][1] 
The strange thing is when I replace $(JENKINS_HOME) with the actual path value /var/jenkins_home i.e.
HOST_LOG_DIR := $(subst /var/jenkins_home,$(JENKINS_HOME_HOST_PATH),$(WORKSPACE))
then it works as expected,
I need to fix this so that it works without the hard-coded substitution.
