allow use of generated files in gb_Jar

solenv/gbuild/Jar.mk

@@ -140,6 +140,16 @@ $(foreach sourcefile,$(2),$(call gb_Jar_add_sourcefile,$(1),$(sourcefile)))
 
 endef
 
+define gb_Jar_add_generated_sourcefile
+$(call gb_JavaClassSet_add_generated_sourcefile,$(call gb_Jar_get_classsetname,$(1)),$(2))
+
+endef
+
+define gb_Jar_add_generated_sourcefiles
+$(foreach sourcefile,$(2),$(call gb_Jar_add_generated_sourcefile,$(1),$(sourcefile)))
+
+endef
+
 define gb_JarTest_set_classpath
 $(call gb_JavaClassSet_set_classpath,$(call gb_Jar_get_classsetname,$(1)),$(2))
 

solenv/gbuild/JavaClassSet.mk

@@ -69,6 +69,10 @@ define gb_JavaClassSet__get_sourcefile
 $(SRCDIR)/$(1).java
 endef
 
+define gb_JavaClassSet__get_generated_sourcefile
+$(WORKDIR)/$(1).java
+endef
+
 define gb_JavaClassSet_add_sourcefile
 $(call gb_JavaClassSet_get_target,$(1)) : $(call gb_JavaClassSet__get_sourcefile,$(2))
 
@@ -79,6 +83,17 @@ $(foreach sourcefile,$(2),$(call gb_JavaClassSet_add_sourcefile,$(1),$(sourcefil
 
 endef
 
+define gb_JavaClassSet_add_generated_sourcefile
+$(call gb_JavaClassSet_get_target,$(1)) : $(call gb_JavaClassSet__get_generated_sourcefile,$(2))
+$(call gb_JavaClassSet__get_generated_sourcefile,$(2)) : $(gb_Helper_PHONY)
+
+endef
+
+define gb_JavaClassSet_add_generated_sourcefiles
+$(foreach sourcefile,$(2),$(call gb_JavaClassSet_add_generated_sourcefile,$(1),$(sourcefile)))
+
+endef
+
 define gb_JavaClassSet_set_classpath
 $(call gb_JavaClassSet_get_target,$(1)) : T_CP := $(2)