Only build on 2.x

svn path=/trunk/mcs/; revision=50240

mcs/class/Microsoft.Build.Engine/Makefile

@@ -3,6 +3,14 @@ SUBDIRS =
 include ../../build/rules.make
 
 LIBRARY = Microsoft.Build.Engine.dll
+
+ifeq (1.0, $(FRAMEWORK_VERSION))
+LIBRARY_NAME = dummy-Microsoft.Build.Engine.dll
+NO_INSTALL = yes
+NO_TEST = yes
+NO_SIGN_ASSEMBLY = yes
+endif
+
 LIB_MCS_FLAGS = \
 	/r:$(corlib)				\
 	/r:System.dll				\

mcs/class/Microsoft.Build.Framework/Makefile

@@ -3,6 +3,14 @@ SUBDIRS =
 include ../../build/rules.make
 
 LIBRARY = Microsoft.Build.Framework.dll
+
+ifeq (1.0, $(FRAMEWORK_VERSION))
+LIBRARY_NAME = dummy-Microsoft.Build.Framework.dll
+NO_INSTALL = yes
+NO_TEST = yes
+NO_SIGN_ASSEMBLY = yes
+endif
+
 LIB_MCS_FLAGS = \
 	/r:$(corlib)				\
 	/r:System.dll

mcs/class/Microsoft.Build.Tasks/Makefile

@@ -3,6 +3,13 @@ SUBDIRS =
 include ../../build/rules.make
 
 LIBRARY = Microsoft.Build.Tasks.dll
+ifeq (1.0, $(FRAMEWORK_VERSION))
+LIBRARY_NAME = dummy-Microsoft.Build.Tasks.dll
+NO_INSTALL = yes
+NO_TEST = yes
+NO_SIGN_ASSEMBLY = yes
+endif
+
 LIB_MCS_FLAGS = \
 	/r:$(corlib)				\
 	/r:System.dll				\

mcs/class/Microsoft.Build.Utilities/Makefile

@@ -3,6 +3,13 @@ SUBDIRS =
 include ../../build/rules.make
 
 LIBRARY = Microsoft.Build.Utilities.dll
+ifeq (1.0, $(FRAMEWORK_VERSION))
+LIBRARY_NAME = dummy-Microsoft.Build.Utilities.dll
+NO_INSTALL = yes
+NO_TEST = yes
+NO_SIGN_ASSEMBLY = yes
+endif
+
 LIB_MCS_FLAGS = \
 	/r:$(corlib)				\
 	/r:System.dll				\