Add a desugar step between javac and proguard
This enables support for lambdas by passing class files through the
desugar tool.
Test: m -j checkbuild tests cts
Change-Id: I14ec152355243fd67fe2f107ccbe67a1b4e7e262
diff --git a/core/java.mk b/core/java.mk
index 1ebe3b5..1437ad7 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -116,6 +116,7 @@
endif
full_classes_compiled_jar := $(intermediates.COMMON)/$(full_classes_compiled_jar_leaf)
+full_classes_desugar_jar := $(intermediates.COMMON)/desugar.classes.jar
jarjar_leaf := classes-jarjar.jar
full_classes_jarjar_jar := $(intermediates.COMMON)/$(jarjar_leaf)
emma_intermediates_dir := $(intermediates.COMMON)/emma_out
@@ -142,6 +143,7 @@
LOCAL_INTERMEDIATE_TARGETS += \
$(full_classes_compiled_jar) \
+ $(full_classes_desugar_jar) \
$(full_classes_jarjar_jar) \
$(full_classes_emma_jar) \
$(full_classes_jar) \
@@ -447,14 +449,28 @@
javac-check : $(full_classes_compiled_jar)
javac-check-$(LOCAL_MODULE) : $(full_classes_compiled_jar)
+my_desugaring :=
+ifndef LOCAL_JACK_ENABLED
+ifeq ($(LOCAL_JAVA_LANGUAGE_VERSION),1.8)
+my_desugaring := true
+$(full_classes_desugar_jar): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
+$(full_classes_desugar_jar): $(full_classes_compiled_jar) $(DESUGAR)
+ $(desugar-classes-jar)
+endif
+endif
+
+ifndef my_desugaring
+full_classes_desugar_jar := $(full_classes_compiled_jar)
+endif
+
# Run jarjar if necessary, otherwise just copy the file.
ifneq ($(strip $(LOCAL_JARJAR_RULES)),)
$(full_classes_jarjar_jar): PRIVATE_JARJAR_RULES := $(LOCAL_JARJAR_RULES)
-$(full_classes_jarjar_jar): $(full_classes_compiled_jar) $(LOCAL_JARJAR_RULES) | $(JARJAR)
+$(full_classes_jarjar_jar): $(full_classes_desugar_jar) $(LOCAL_JARJAR_RULES) | $(JARJAR)
@echo JarJar: $@
$(hide) java -jar $(JARJAR) process $(PRIVATE_JARJAR_RULES) $< $@
else
-$(full_classes_jarjar_jar): $(full_classes_compiled_jar) | $(ACP)
+$(full_classes_jarjar_jar): $(full_classes_desugar_jar) | $(ACP)
@echo Copying: $@
$(hide) $(ACP) -fp $< $@
endif