diff --git a/clean.mk b/clean.mk
index cebc05a6..5832ca5a 100644
--- a/clean.mk
+++ b/clean.mk
@@ -14,12 +14,12 @@
 
 .DEFAULT_GOAL := clean
 
-D = /
 
 ifndef TEST_ROOT
-	TEST_ROOT := $(shell pwd)$(D)..
+	TEST_ROOT := $(shell pwd)/..
 endif
 
+include $(TEST_ROOT)/TKG/common.mk
 include settings.mk
 
 cleanBuild:
diff --git a/common.mk b/common.mk
new file mode 100644
index 00000000..d96fc330
--- /dev/null
+++ b/common.mk
@@ -0,0 +1,22 @@
+##############################################################################
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+##############################################################################
+
+D = /
+P = :
+Q = "
+SQ = '
+
+ifneq (,$(findstring Win,$(OS)))
+	P=;
+endif
diff --git a/compile.mk b/compile.mk
index 6df7e68b..b6f1809f 100644
--- a/compile.mk
+++ b/compile.mk
@@ -14,12 +14,11 @@
 
 .DEFAULT_GOAL := compile
 
-D = /
-
 ifndef TEST_ROOT
-	TEST_ROOT := $(shell pwd)$(D)..
+	TEST_ROOT := $(shell pwd)/..
 endif
 
+include $(TEST_ROOT)/TKG/common.mk
 include settings.mk
 include moveDmp.mk
 
@@ -34,4 +33,4 @@ compile:
 	($(COMPILE_CMD) 2>&1; echo $$? ) | tee $(Q)$(COMPILATION_LOG)$(Q); \
 	$(MOVE_TDUMP)
 
-.PHONY: compile
\ No newline at end of file
+.PHONY: compile
diff --git a/makeGen.mk b/makeGen.mk
index e891d788..30718df6 100644
--- a/makeGen.mk
+++ b/makeGen.mk
@@ -23,17 +23,17 @@ help:
 CURRENT_DIR := $(shell pwd)
 OPTS=
 
-D=/
-P=:
-Q="
 
 TKG_JAR = .$(D)bin$(D)TestKitGen.jar
 JSON_SIMPLE = .$(D)lib$(D)json-simple.jar
 
-ifneq (,$(findstring Win,$(OS)))
-CURRENT_DIR := $(subst \,/,$(CURRENT_DIR))
-P=;
+
+
+ifndef TEST_ROOT
+	TEST_ROOT := $(shell pwd)/..
 endif
+
+include $(TEST_ROOT)/TKG/common.mk
 include $(CURRENT_DIR)$(D)featureSettings.mk
 -include $(CURRENT_DIR)$(D)autoGenEnv.mk
 include $(CURRENT_DIR)$(D)envSettings.mk
diff --git a/moveDmp.mk b/moveDmp.mk
index 1b73a18e..e32dcf5c 100644
--- a/moveDmp.mk
+++ b/moveDmp.mk
@@ -12,13 +12,12 @@
 # limitations under the License.
 ##############################################################################
 
-D = /
-Q = "
-
 ifndef TEST_ROOT
-	TEST_ROOT := $(shell pwd)$(D)..
+	TEST_ROOT := $(shell pwd)/..
 endif
 
+include $(TEST_ROOT)/TKG/common.mk
+
 COMPILATION_OUTPUT=$(TEST_ROOT)$(D)TKG$(D)output_compilation
 COMPILATION_LOG=$(COMPILATION_OUTPUT)$(D)compilation.log
 MOVE_TDUMP_PERL=perl scripts$(D)moveDmp.pl --compileLogPath=$(Q)$(COMPILATION_LOG)$(Q) --testRoot=$(Q)$(TEST_ROOT)$(Q)
diff --git a/runtest.mk b/runtest.mk
index e8e762b4..163b1235 100644
--- a/runtest.mk
+++ b/runtest.mk
@@ -18,12 +18,12 @@
 
 .DEFAULT_GOAL := test
 
-D = /
 
 SUBDIRS = ..
 
 ifndef TEST_ROOT
-	TEST_ROOT := $(shell pwd)$(D)..
+	TEST_ROOT := $(shell pwd)/..
 endif
 
+include $(TEST_ROOT)/TKG/common.mk
 include settings.mk
diff --git a/settings.mk b/settings.mk
index 722543a4..fa6c2b99 100644
--- a/settings.mk
+++ b/settings.mk
@@ -35,13 +35,15 @@ EXECUTABLE_SUFFIX =
 RUN_SCRIPT = sh
 RUN_SCRIPT_STRING = "sh -c"
 SCRIPT_SUFFIX=.sh
-Q="
-SQ='
-P=:
 AND_IF_SUCCESS=&&
 PROPS_DIR=props_unix
 TOTALCOUNT := 0
 
+ifndef TEST_ROOT
+	TEST_ROOT := $(shell pwd)/..
+endif
+
+include $(TEST_ROOT)/TKG/common.mk
 -include $(TEST_ROOT)$(D)TKG$(D)autoGenEnv.mk
 include $(TEST_ROOT)$(D)TKG$(D)envSettings.mk
 -include $(TEST_ROOT)$(D)TKG$(D)utils.mk
@@ -84,7 +86,7 @@ ifndef JVM_VERSION
 
 ifeq (hotspot, $(JDK_IMPL))
 	JVM_VERSION = $(OPENJDK_VERSION)
-else 
+else
 	JVM_VERSION = $(OPENJDK_VERSION)-$(JDK_IMPL)
 endif
 
@@ -92,10 +94,9 @@ export JVM_VERSION:=$(JVM_VERSION)
 endif
 
 ifneq (,$(findstring win,$(SPEC)))
-P=;
 D=\\
 EXECUTABLE_SUFFIX=.exe
-RUN_SCRIPT="cmd /c" 
+RUN_SCRIPT="cmd /c"
 RUN_SCRIPT_STRING=$(RUN_SCRIPT)
 SCRIPT_SUFFIX=.bat
 PROPS_DIR=props_win
@@ -195,7 +196,7 @@ KEEP_REPORTDIR?=true
 ifeq ($(KEEP_REPORTDIR), false)
 	RM_REPORTDIR=$(RM) -r $(REPORTDIR);
 endif
-ifeq ($(TEST_ITERATIONS), 1) 
+ifeq ($(TEST_ITERATIONS), 1)
 	TEST_STATUS=if [ $$? -eq 0 ] ; then $(ECHO) $(Q)$(Q); $(ECHO) $(Q)$@$(Q)$(Q)_PASSED$(Q); $(ECHO) $(Q)$(Q); $(CD) $(TEST_ROOT); $(RM_REPORTDIR) else $(ECHO) $(Q)$(Q); $(ECHO) $(Q)$@$(Q)$(Q)_FAILED$(Q); $(ECHO) $(Q)$(Q); fi
 else
 	TEST_STATUS=if [ $$? -eq 0 ] ; then $(ECHO) $(Q)$(Q); $(ECHO) $(Q)$@$(Q)$(Q)_PASSED(ITER_$$itercnt)$(Q); $(ECHO) $(Q)$(Q); $(CD) $(TEST_ROOT); $(RM_REPORTDIR) if [ $$itercnt -eq $(TEST_ITERATIONS) ] ; then $(ECHO) $(Q)$(Q); $(ECHO) $(Q)$@$(Q)$(Q)_PASSED$(Q); $(ECHO) $(Q)$(Q); fi else $(ECHO) $(Q)$(Q); $(ECHO) $(Q)$@$(Q)$(Q)_FAILED(ITER_$$itercnt)$(Q); $(ECHO) $(Q)$(Q); $(ECHO) $(Q)$(Q); $(ECHO) $(Q)$@$(Q)$(Q)_FAILED$(Q); $(ECHO) $(Q)$(Q); exit 1; fi