diff --git a/gcc/Makefile b/gcc/Makefile
index d9697be..d4644cd 100644
--- a/gcc/Makefile
+++ b/gcc/Makefile
@@ -8,9 +8,11 @@ YW_LIBS  = sqlite-db \
            yw-db  \
            yw-parse \
            yw-extract \
-           yw-model
+           yw-model \
+		   yw-graph
 
-YW_APPS = yw-extract-app
+YW_APPS = yw-extract-app \
+          yw-graph-app
 
 YW_TESTS = sqlite-db-tests \
            yw-config-tests \
@@ -18,7 +20,8 @@ YW_TESTS = sqlite-db-tests \
            yw-db-tests \
            yw-parse-tests \
            yw-extract-tests \
-           yw-model-tests
+           yw-model-tests \
+		   yw-graph-tests
 
 YW_BUILDS = $(YW_LIBS) $(YW_APPS) $(YW_TESTS)
 
diff --git a/gcc/yw-graph-app/Makefile b/gcc/yw-graph-app/Makefile
new file mode 100644
index 0000000..9231196
--- /dev/null
+++ b/gcc/yw-graph-app/Makefile
@@ -0,0 +1,8 @@
+include ../yw.setup.makefile
+include ../cpp.setup.makefile
+include ../app.setup.makefile
+
+APP     = yw_graph
+APP_SRC = $(wildcard $(YW_SRC_DIR)/yw-graph-app/*.cpp)
+
+include ../app.targets.makefile
diff --git a/gcc/yw-graph-tests/Makefile b/gcc/yw-graph-tests/Makefile
new file mode 100644
index 0000000..141cb5f
--- /dev/null
+++ b/gcc/yw-graph-tests/Makefile
@@ -0,0 +1,7 @@
+include ../yw.setup.makefile
+include ../cpp.setup.makefile
+include ../tests.setup.makefile
+
+TESTS = $(wildcard $(YW_TEST_DIR)/yw-graph-tests/*.cpp)
+
+include ../test.targets.makefile
diff --git a/gcc/yw-graph-tests/test_runner.cpp b/gcc/yw-graph-tests/test_runner.cpp
new file mode 100644
index 0000000..f530d74
--- /dev/null
+++ b/gcc/yw-graph-tests/test_runner.cpp
@@ -0,0 +1,7 @@
+#include "CppUTest/CommandLineTestRunner.h"
+
+int main(int ac, char** av)
+{
+    MemoryLeakWarningPlugin::turnOffNewDeleteOverloads();
+    return CommandLineTestRunner::RunAllTests(ac, av);
+}
\ No newline at end of file
diff --git a/gcc/yw-graph/Makefile b/gcc/yw-graph/Makefile
new file mode 100644
index 0000000..d347f89
--- /dev/null
+++ b/gcc/yw-graph/Makefile
@@ -0,0 +1,7 @@
+include ../yw.setup.makefile
+include ../cpp.setup.makefile
+
+LIB_TARGET = libywgraph.a
+LIB_SRC    = $(wildcard $(YW_SRC_DIR)/yw-graph/*.cpp)
+
+include ../lib.targets.makefile
diff --git a/gcc/yw.setup.makefile b/gcc/yw.setup.makefile
index 754245b..a359978 100644
--- a/gcc/yw.setup.makefile
+++ b/gcc/yw.setup.makefile
@@ -4,23 +4,25 @@ YW_DIR = ../..
 YW_SRC_DIR  = $(YW_DIR)/src
 YW_GCC_DIR  = $(YW_DIR)/gcc
 
-YW_INCLUDES += -I$(YW_SRC_DIR)/sqlite-3.19.3
-YW_INCLUDES += -I$(YW_SRC_DIR)/yw-types
-YW_INCLUDES += -I$(YW_SRC_DIR)/yw-config
 YW_INCLUDES += -I$(YW_SRC_DIR)/yw-cli
-YW_INCLUDES += -I$(YW_SRC_DIR)/sqlite-db
-YW_INCLUDES += -I$(YW_SRC_DIR)/yw-db
-YW_INCLUDES += -I$(YW_SRC_DIR)/yw-parse
-YW_INCLUDES += -I$(YW_SRC_DIR)/yw-extract
+YW_INCLUDES += -I$(YW_SRC_DIR)/yw-graph
 YW_INCLUDES += -I$(YW_SRC_DIR)/yw-model
+YW_INCLUDES += -I$(YW_SRC_DIR)/yw-extract
+YW_INCLUDES += -I$(YW_SRC_DIR)/yw-parse
+YW_INCLUDES += -I$(YW_SRC_DIR)/yw-db
+YW_INCLUDES += -I$(YW_SRC_DIR)/sqlite-db
+YW_INCLUDES += -I$(YW_SRC_DIR)/yw-config
+YW_INCLUDES += -I$(YW_SRC_DIR)/yw-types
+YW_INCLUDES += -I$(YW_SRC_DIR)/sqlite-3.19.3
 
-YW_LIBS   += -lywconfig  -L$(YW_GCC_DIR)/yw-config
 YW_LIBS   += -lywcli     -L$(YW_GCC_DIR)/yw-cli
+YW_LIBS   += -lywgraph   -L$(YW_GCC_DIR)/yw-graph
 YW_LIBS   += -lywmodel   -L$(YW_GCC_DIR)/yw-model
 YW_LIBS   += -lywextract -L$(YW_GCC_DIR)/yw-extract
 YW_LIBS   += -lywparse   -L$(YW_GCC_DIR)/yw-parse
 YW_LIBS   += -lywdb      -L$(YW_GCC_DIR)/yw-db
 YW_LIBS   += -lsqlitedb  -L$(YW_GCC_DIR)/sqlite-db
+YW_LIBS   += -lywconfig  -L$(YW_GCC_DIR)/yw-config
 YW_LIBS   += -lsqlite3   -L$(YW_GCC_DIR)/sqlite3
 
 ANTLR_LIB  += -lantlr4 -L$(YW_GCC_DIR)/antlr4-runtime
diff --git a/msvc/yw.sln b/msvc/yw.sln
index 6418bdb..10b891a 100644
--- a/msvc/yw.sln
+++ b/msvc/yw.sln
@@ -231,6 +231,22 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "yw-cli-tests", "yw-cli-test
 		..\gcc\yw-cli-tests\test_runner.cpp = ..\gcc\yw-cli-tests\test_runner.cpp
 	EndProjectSection
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "yw-graph", "yw-graph", "{FB1DBF02-D35F-41A4-AC9D-4B32AF832202}"
+	ProjectSection(SolutionItems) = preProject
+		..\gcc\yw-graph\Makefile = ..\gcc\yw-graph\Makefile
+	EndProjectSection
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "yw-graph-tests", "yw-graph-tests", "{030CC283-17BD-4E92-A6BE-D5CF949F5570}"
+	ProjectSection(SolutionItems) = preProject
+		..\gcc\yw-graph-tests\Makefile = ..\gcc\yw-graph-tests\Makefile
+		..\gcc\yw-graph-tests\test_runner.cpp = ..\gcc\yw-graph-tests\test_runner.cpp
+	EndProjectSection
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "yw-graph-app", "yw-graph-app", "{C4AA4D95-423C-4BF5-9CDA-8C50DF668B36}"
+	ProjectSection(SolutionItems) = preProject
+		..\gcc\yw-graph-app\Makefile = ..\gcc\yw-graph-app\Makefile
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -472,6 +488,9 @@ Global
 		{35F9A935-896A-4707-BC10-6C782D0CFF15} = {67337B64-473B-4676-AF06-D1EDCE123B6D}
 		{9265BA67-55E9-4668-B0A5-393C123F37D5} = {67337B64-473B-4676-AF06-D1EDCE123B6D}
 		{F1EC2F6B-014F-4064-B2C5-F37172E156E9} = {67337B64-473B-4676-AF06-D1EDCE123B6D}
+		{FB1DBF02-D35F-41A4-AC9D-4B32AF832202} = {67337B64-473B-4676-AF06-D1EDCE123B6D}
+		{030CC283-17BD-4E92-A6BE-D5CF949F5570} = {67337B64-473B-4676-AF06-D1EDCE123B6D}
+		{C4AA4D95-423C-4BF5-9CDA-8C50DF668B36} = {67337B64-473B-4676-AF06-D1EDCE123B6D}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {9AEF8164-5EBC-432F-98B9-C7C5704935A3}
diff --git a/src/yw-cli/command_line.h b/src/yw-cli/command_line.h
index bdcf686..6e52303 100644
--- a/src/yw-cli/command_line.h
+++ b/src/yw-cli/command_line.h
@@ -19,12 +19,12 @@ namespace yw {
             CommandLine(std::string line);
             CommandLine(int argc, char** argv);
 
-            std::string getLine() { return line; }
-            std::string getProgram() { return program; }
-            std::vector<std::string> getFlags() { return flags; }
-            nullable_string getCommand() { return command; }
-            std::vector<std::string> getArguments() { return arguments; }
-            yw::config::Configuration getSettings() { return settings; }
+            std::string getLine() const { return line; }
+            std::string getProgram() const { return program; }
+            std::vector<std::string> getFlags() const { return flags; }
+            nullable_string getCommand() const { return command; };
+            std::vector<std::string> getArguments() const { return arguments; }
+            yw::config::Configuration getSettings() const { return settings; }
 
             static std::string concatenate(int argc, char** argv);
         };
diff --git a/src/yw-graph/yw_graph_cli.cpp b/src/yw-graph/yw_graph_cli.cpp
index 88e714e..2d0acc1 100644
--- a/src/yw-graph/yw_graph_cli.cpp
+++ b/src/yw-graph/yw_graph_cli.cpp
@@ -15,7 +15,7 @@ using namespace yw::model;
 namespace yw {
     namespace graph {
 
-        int cli(CommandLine& commandLine)
+        int cli(const CommandLine& commandLine)
         {
             YesWorkflowDB ywdb;
 
diff --git a/src/yw-graph/yw_graph_cli.h b/src/yw-graph/yw_graph_cli.h
index 002dc7f..a72898d 100644
--- a/src/yw-graph/yw_graph_cli.h
+++ b/src/yw-graph/yw_graph_cli.h
@@ -5,7 +5,7 @@
 namespace yw {
     namespace graph {
 
-        int cli(yw::cli::CommandLine& commandLine);
+        int cli(const yw::cli::CommandLine& commandLine);
         void print_help();
     }
 }
\ No newline at end of file