Megatest

	;; 2. unset MT_* vars
	;; 3. fix target
	;; 4. fix runname
	;; 5. fix testpatt or calculate it from contour
	;; 6. launch the run
	;; 7. roll up the run result and or roll up the logpro processed result
	(if (configf:lookup testconfig "subrun" "runwait") ;; we use runwait as the flag that a subrun is requested
            (subrun:initialize-toprun-test testconfig test-run-dir)
            
	    (let* ((runarea   (let ((ra (configf:lookup testconfig "subrun" "run-area")))
				(if ra      ;; when runarea is not set we default to *toppath*. However 
				    ra      ;; we need to force the setting in the testconfig so it will
				    (begin  ;; be preserved in the testconfig.subrun file
				      (configf:set-section-var testconfig "subrun" "runarea" *toppath*)
				      *toppath*))))
                   ;;; BB: TODO - use common:param
		   (passfail  (configf:lookup testconfig "subrun" "passfail"))
		   (target    (or (configf:lookup testconfig "subrun" "target") (get-environment-variable "MT_TARGET")))
		   (runname   (or (configf:lookup testconfig "subrun" "runname")(get-environment-variable "MT_RUNNAME")))
		   (contour   (configf:lookup testconfig "subrun" "contour"))
		   (testpatt  (configf:lookup testconfig "subrun" "test-patt"))
		   (mode-patt (configf:lookup testconfig "subrun" "mode-patt"))
		   (tag-expr  (configf:lookup testconfig "subrun" "tag-expr"))
		   (run-wait  (configf:lookup testconfig "subrun" "runwait"))
		   (logpro    (configf:lookup testconfig "subrun" "logpro"))
		   (compact-stem (string-substitute "[/*]" "_" (conc target "-" runname "-" (or testpatt mode-patt tag-expr))))
		   (log-file (conc compact-stem ".log"))
		   (mt-cmd    (conc "megatest -run -target " target
				    " -runname " runname
				    (conc " -start-dir " runarea) ;; (if runarea runarea *toppath*))
				    (if testpatt  (conc " -testpatt " testpatt)  "")
				    (if mode-patt (conc " -modepatt " mode-patt) "")
				    (if tag-expr  (conc " -tag-expr"  tag-expr)  "")
				    (if (equal? run-wait "yes") " -run-wait " "")
				    " -log " log-file)))
	      ;; change directory to runarea, create it if needed, we do NOT create the directory 
	;; (if runarea
	;;     (if (directory-exists? runarea)
	;;         (change-directory runarea)
	;;         (begin
	;;   	(debug:print 0 *default-log-port* "ERROR: for sub-megatest run the runarea \"" runarea "\" does not exist! EXITING.")
	;;   	(exit 1))))
	      ;; (let ((subrun (conc *toppath* "/subrun") #t))
	      ;; 	 (create-directory subrun)
	      ;; 	 (change-directory subrun)))
	      
	      ;; by this point we are in the right place to run the subrun and we have a Megatest command to run
	      ;; (filter (lambda (x)(string-match "MT_.*" (car x))) (get-environment-variables))
	      ;; (common:without-vars mt-cmd "^MT_.*")
              (debug:print-info 0 *default-log-port* "Subrun command is \"" mt-cmd "\"")
              (set! ezsteps #t) ;; set the needed flag
	      (set! ezstepslst (append (or ezstepslst '())

                                       (list (list "subrun" (conc "{subrun=true} " mt-cmd)))))
	      (configf:set-section-var testconfig "logpro" "subrun" logpro) ;; append the logpro rules to the logpro section as stepname subrun
              (if runarea (configf:set-section-var testconfig "setup" "submegatest" runarea))

	      ))

	;; process the ezsteps
	(if ezsteps
	    (begin
	      (if (not (common:file-exists? ".ezsteps"))(create-directory ".ezsteps"))
	      ;; if ezsteps was defined then we are sure to have at least one step but check anyway
	      (if (not (> (length ezstepslst) 0))

                                            (defval     (alist-ref defvals switch equal?))
                                            (val        (or (configf:lookup subrunconfig switch)
                                                            defval)))
                                        (if val
                                            (list switch val)
                                            #f)))
                                    switch-def-alist)))
         (target        (alist-ref switch-alist "-target" equal?))

         (runname       (alist-ref switch-alist "-runname" equal?))

         (testpatt      (alist-ref switch-alist "-testpatt" equal?))
         (mode-patt     (alist-ref switch-alist "-modepatt" equal?))
         (tag-expr      (alist-ref switch-alist "-tagexpr" equal?))
         (compact-stem  (string-substitute "[/*]" "_"
                                           (conc
                                            (or target "NO-TARGET")
                                            "-"
                                            (or runname "NO-RUNNAME")
                                            "-" (or testpatt mode-patt tag-expr "NO-TESTPATT"))))
         (logfile       (conc
                         test-run-dir "/"
                         (or log-prefix "")
                         (if log-prefix "-" "")
                         compact-stem
                         ".log")))