diff --git a/win32/generate-msvc.mak b/win32/generate-msvc.mak
index dd8691d127..5d02daa5d1 100644
--- a/win32/generate-msvc.mak
+++ b/win32/generate-msvc.mak
@@ -29,14 +29,17 @@ GDK_RESOURCES_ARGS = ..\gdk\gdk.gresource.xml --target=$@ --sourcedir=..\gdk --c
 GTK_MARSHALERS_FLAGS = --prefix=_gtk_marshal --valist-marshallers
 GTK_RESOURCES_ARGS = ..\gtk\gtk.gresource.xml --target=$@ --sourcedir=..\gtk --c-name _gtk --manual-register
 
-all:	\
-	..\config.h	\
+GDK_GENERATED_SOURCES =	\
 	..\gdk\gdkconfig.h	\
 	..\gdk\gdkversionmacros.h	\
 	..\gdk\gdkmarshalers.h	\
 	..\gdk\gdkmarshalers.c	\
 	..\gdk\gdkresources.h	\
 	..\gdk\gdkresources.c	\
+
+generate-base-sources:	\
+	..\config.h	\
+	$(GDK_GENERATED_SOURCES)	\
 	..\gtk\gtk-win32.rc	\
 	..\gtk\libgtk3.manifest	\
 	..\gtk\gtkdbusgenerated.h	\
diff --git a/win32/gtk-introspection-msvc.mak b/win32/gtk-introspection-msvc.mak
index d2af90b5cb..156c744b17 100644
--- a/win32/gtk-introspection-msvc.mak
+++ b/win32/gtk-introspection-msvc.mak
@@ -1,6 +1,7 @@
 # NMake Makefile to build Introspection Files for GTK+
 
 !include detectenv-msvc.mak
+!include generate-msvc.mak
 
 APIVERSION = 3.0
 
@@ -28,7 +29,7 @@ AT_PLAT=aarch64
 AT_PLAT=i686
 !endif
 
-all: setgirbuildenv $(built_install_girs) $(built_install_typelibs)
+introspect: setgirbuildenv $(built_install_girs) $(built_install_typelibs)
 
 setgirbuildenv:
 	@set PYTHONPATH=$(PREFIX)\lib\gobject-introspection
@@ -38,15 +39,15 @@ setgirbuildenv:
 
 !include introspection.body.mak
 
-install-introspection: all
+install-introspection: introspect
 	@-copy vs$(VSVER)\$(CFG)\$(PLAT)\bin\*.gir "$(G_IR_INCLUDEDIR)"
 	@-copy /b vs$(VSVER)\$(CFG)\$(PLAT)\bin\*.typelib "$(G_IR_TYPELIBDIR)"
 
 !else
-all:
+introspect:
 	@-echo $(ERROR_MSG)
 !endif
 
-clean:
+introspect-clean:
 	@-del /f/q vs$(VSVER)\$(CFG)\$(PLAT)\bin\*.typelib
 	@-del /f/q vs$(VSVER)\$(CFG)\$(PLAT)\bin\*.gir
diff --git a/win32/vs10/gtk3-introspect.vcxproj b/win32/vs10/gtk3-introspect.vcxproj
index 6c191dde9e..cba81df3c2 100644
--- a/win32/vs10/gtk3-introspect.vcxproj
+++ b/win32/vs10/gtk3-introspect.vcxproj
@@ -68,27 +68,27 @@
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <NMakeBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam)</NMakeBuildCommandLine>
-    <NMakeReBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean all</NMakeReBuildCommandLine>
-    <NMakeCleanCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean</NMakeCleanCommandLine>
+    <NMakeBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect</NMakeBuildCommandLine>
+    <NMakeReBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean introspect</NMakeReBuildCommandLine>
+    <NMakeCleanCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean</NMakeCleanCommandLine>
     <NMakeOutput>$(GtkIntrospectBuiltFiles)</NMakeOutput>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <NMakeBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam)</NMakeBuildCommandLine>
-    <NMakeReBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean all</NMakeReBuildCommandLine>
-    <NMakeCleanCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean</NMakeCleanCommandLine>
+    <NMakeBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect</NMakeBuildCommandLine>
+    <NMakeReBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean introspect</NMakeReBuildCommandLine>
+    <NMakeCleanCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean</NMakeCleanCommandLine>
     <NMakeOutput>$(GtkIntrospectBuiltFiles)</NMakeOutput>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <NMakeBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam)</NMakeBuildCommandLine>
-    <NMakeReBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean all</NMakeReBuildCommandLine>
-    <NMakeCleanCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean</NMakeCleanCommandLine>
+    <NMakeBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect</NMakeBuildCommandLine>
+    <NMakeReBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean introspect</NMakeReBuildCommandLine>
+    <NMakeCleanCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean</NMakeCleanCommandLine>
     <NMakeOutput>$(GtkIntrospectBuiltFiles)</NMakeOutput>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <NMakeBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam)</NMakeBuildCommandLine>
-    <NMakeReBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean all</NMakeReBuildCommandLine>
-    <NMakeCleanCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean</NMakeCleanCommandLine>
+    <NMakeBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect</NMakeBuildCommandLine>
+    <NMakeReBuildCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean introspect</NMakeReBuildCommandLine>
+    <NMakeCleanCommandLine>$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean</NMakeCleanCommandLine>
     <NMakeOutput>$(GtkIntrospectBuiltFiles)</NMakeOutput>
   </PropertyGroup>
   <ItemGroup>
diff --git a/win32/vs10/gtk3-prebuild.vcxproj b/win32/vs10/gtk3-prebuild.vcxproj
index 3f1e73bc6a..7d4af0aa20 100644
--- a/win32/vs10/gtk3-prebuild.vcxproj
+++ b/win32/vs10/gtk3-prebuild.vcxproj
@@ -121,14 +121,14 @@
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
-    <NMakeBuildCommandLine Condition="'$(Configuration)' == 'Debug_Broadway'">$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam)</NMakeBuildCommandLine>
-    <NMakeBuildCommandLine Condition="'$(Configuration)' == 'Release_Broadway'">$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam)</NMakeBuildCommandLine>
-    <NMakeBuildCommandLine Condition="'$(Configuration)' == 'Debug'">$(GenerateRequiredSourcesBase) CFG=$(Configuration) $(IntrospectPythonParam)</NMakeBuildCommandLine>
-    <NMakeBuildCommandLine Condition="'$(Configuration)' == 'Release'">$(GenerateRequiredSourcesBase) CFG=$(Configuration) $(IntrospectPythonParam)</NMakeBuildCommandLine>
-    <NMakeReBuildCommandLine Condition="'$(Configuration)' == 'Debug_Broadway'">$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) clean all</NMakeReBuildCommandLine>
-    <NMakeReBuildCommandLine Condition="'$(Configuration)' == 'Release_Broadway'">$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) clean all</NMakeReBuildCommandLine>
-    <NMakeReBuildCommandLine Condition="'$(Configuration)' == 'Debug'">$(GenerateRequiredSourcesBase) CFG=$(Configuration) $(IntrospectPythonParam) clean all</NMakeReBuildCommandLine>
-    <NMakeReBuildCommandLine Condition="'$(Configuration)' == 'Release'">$(GenerateRequiredSourcesBase) CFG=$(Configuration) $(IntrospectPythonParam) clean all</NMakeReBuildCommandLine>
+    <NMakeBuildCommandLine Condition="'$(Configuration)' == 'Debug_Broadway'">$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) generate-base-sources</NMakeBuildCommandLine>
+    <NMakeBuildCommandLine Condition="'$(Configuration)' == 'Release_Broadway'">$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) generate-base-sources</NMakeBuildCommandLine>
+    <NMakeBuildCommandLine Condition="'$(Configuration)' == 'Debug'">$(GenerateRequiredSourcesBase) CFG=$(Configuration) $(IntrospectPythonParam) generate-base-sources</NMakeBuildCommandLine>
+    <NMakeBuildCommandLine Condition="'$(Configuration)' == 'Release'">$(GenerateRequiredSourcesBase) CFG=$(Configuration) $(IntrospectPythonParam) generate-base-sources</NMakeBuildCommandLine>
+    <NMakeReBuildCommandLine Condition="'$(Configuration)' == 'Debug_Broadway'">$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) clean generate-base-sources</NMakeReBuildCommandLine>
+    <NMakeReBuildCommandLine Condition="'$(Configuration)' == 'Release_Broadway'">$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) clean generate-base-sources</NMakeReBuildCommandLine>
+    <NMakeReBuildCommandLine Condition="'$(Configuration)' == 'Debug'">$(GenerateRequiredSourcesBase) CFG=$(Configuration) $(IntrospectPythonParam) clean generate-base-sources</NMakeReBuildCommandLine>
+    <NMakeReBuildCommandLine Condition="'$(Configuration)' == 'Release'">$(GenerateRequiredSourcesBase) CFG=$(Configuration) $(IntrospectPythonParam) clean generate-base-sources</NMakeReBuildCommandLine>
     <NMakeCleanCommandLine Condition="'$(Configuration)' == 'Debug_Broadway'">$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) clean</NMakeCleanCommandLine>
     <NMakeCleanCommandLine Condition="'$(Configuration)' == 'Release_Broadway'">$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) clean</NMakeCleanCommandLine>
     <NMakeCleanCommandLine Condition="'$(Configuration)' == 'Debug'">$(GenerateRequiredSourcesBase) CFG=$(Configuration) $(IntrospectPythonParam) clean</NMakeCleanCommandLine>
diff --git a/win32/vs9/gtk3-introspect.vcproj b/win32/vs9/gtk3-introspect.vcproj
index d69697fa41..e8e9dc5719 100644
--- a/win32/vs9/gtk3-introspect.vcproj
+++ b/win32/vs9/gtk3-introspect.vcproj
@@ -25,9 +25,9 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean all"
-				CleanCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean"
+				BuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect"
+				ReBuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean introspect"
+				CleanCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean"
 				Output="$(GtkIntrospectBuiltFiles)"
 			/>
 		</Configuration>
@@ -38,9 +38,9 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64)"
-				ReBuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) clean all"
-				CleanCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) clean"
+				BuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) introspect"
+				ReBuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) introspect-clean introspect"
+				CleanCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) introspect-clean"
 				Output="$(GtkIntrospectBuiltFiles)"
 			/>
 		</Configuration>
@@ -53,9 +53,9 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean all"
-				CleanCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) clean"
+				BuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect"
+				ReBuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean introspect"
+				CleanCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParam) introspect-clean"
 				Output="$(GtkIntrospectBuiltFiles)"
 			/>
 		</Configuration>
@@ -66,9 +66,9 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64)"
-				ReBuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) clean all"
-				CleanCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) clean"
+				BuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) introspect"
+				ReBuildCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) introspect-clean introspect"
+				CleanCommandLine="$(GtkIntrospectNMakeCmd) $(IntrospectPythonParamX64) introspect-clean"
 				Output="$(GtkIntrospectBuiltFiles)"
 			/>
 		</Configuration>
diff --git a/win32/vs9/gtk3-prebuild.vcproj b/win32/vs9/gtk3-prebuild.vcproj
index 7c328f7274..2bad5dd70f 100644
--- a/win32/vs9/gtk3-prebuild.vcproj
+++ b/win32/vs9/gtk3-prebuild.vcproj
@@ -28,8 +28,8 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean all"
+				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName)  $(IntrospectPythonParam) generate-base-sources"
+				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean generate-base-sources"
 				CleanCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean"
 				Output="$(GeneratedGdkSources);$(GeneratedDemoSources);$(GeneratedGtkSources)"
 			/>
@@ -43,8 +43,8 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean all"
+				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName)  $(IntrospectPythonParam) generate-base-sources"
+				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean generate-base-sources"
 				CleanCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean"
 				Output="$(GeneratedGdkSources);$(GeneratedDemoSources);$(GeneratedGtkSources)"
 			/>
@@ -58,8 +58,8 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) clean all"
+				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1  $(IntrospectPythonParam) generate-base-sources"
+				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) clean generate-base-sources"
 				CleanCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) clean"
 				Output="$(GeneratedGdkSources);$(GeneratedDemoSources);$(GeneratedGtkSources)"
 			/>
@@ -73,8 +73,8 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) clean all"
+				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1  $(IntrospectPythonParam) generate-base-sources"
+				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) clean generate-base-sources"
 				CleanCommandLine="$(GenerateRequiredSourcesBase) CFG=Debug BROADWAY=1 $(IntrospectPythonParam) clean"
 				Output="$(GeneratedGdkSources);$(GeneratedDemoSources);$(GeneratedGtkSources)"
 			/>
@@ -89,8 +89,8 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean all"
+				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName)  $(IntrospectPythonParam) generate-base-sources"
+				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean generate-base-sources"
 				CleanCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean"
 				Output="$(GeneratedGdkSources);$(GeneratedDemoSources);$(GeneratedGtkSources)"
 			/>
@@ -105,8 +105,8 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean all"
+				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName)  $(IntrospectPythonParam) generate-base-sources"
+				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean generate-base-sources"
 				CleanCommandLine="$(GenerateRequiredSourcesBase) CFG=$(ConfigurationName) $(IntrospectPythonParam) clean"
 				Output="$(GeneratedGdkSources);$(GeneratedDemoSources);$(GeneratedGtkSources)"
 			/>
@@ -121,8 +121,8 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) clean all"
+				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1  $(IntrospectPythonParam) generate-base-sources"
+				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) clean generate-base-sources"
 				CleanCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) clean"
 				Output="$(GeneratedGdkSources);$(GeneratedDemoSources);$(GeneratedGtkSources)"
 			/>
@@ -137,8 +137,8 @@
 			>
 			<Tool
 				Name="VCNMakeTool"
-				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam)"
-				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) clean all"
+				BuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1  $(IntrospectPythonParam) generate-base-sources"
+				ReBuildCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) clean generate-base-sources"
 				CleanCommandLine="$(GenerateRequiredSourcesBase) CFG=Release BROADWAY=1 $(IntrospectPythonParam) clean"
 				Output="$(GeneratedGdkSources);$(GeneratedDemoSources);$(GeneratedGtkSources)"
 			/>