Add JarJar support to BUILD_HOST_JAVA_LIBRARY

This will allow us to convert icu4j-icudata / icu4j-icutzdata
targets to "host" targets rather than "target" targets.
Right now they are forcing Jack off just so they can use
javac + jarjar (even though the resulting file is used on
host).

Bug: 27218410
(cherry picked from commit 30b21ad579fab9669ec00845bfa092e4318eed10)

Change-Id: I4f16896606bcfdd00164078eeb142d05b29bb832

diff --git a/core/host_java_library.mk b/core/host_java_library.mk
index 052c571..97079fd 100644 (file)
--- a/core/host_java_library.mk
+++ b/core/host_java_library.mk
@@ -30,13 +30,15 @@ endif
 endif
 
 full_classes_compiled_jar := $(intermediates.COMMON)/classes-full-debug.jar
+full_classes_jarjar_jar := $(intermediates.COMMON)/classes-jarjar.jar
 emma_intermediates_dir := $(intermediates.COMMON)/emma_out
 # emma is hardcoded to use the leaf name of its input for the output file --
 # only the output directory can be changed
-full_classes_emma_jar := $(emma_intermediates_dir)/lib/$(notdir $(full_classes_compiled_jar))
+full_classes_emma_jar := $(emma_intermediates_dir)/lib/$(notdir $(full_classes_jarjar_jar))
 
 LOCAL_INTERMEDIATE_TARGETS += \
     $(full_classes_compiled_jar) \
+    $(full_classes_jarjar_jar) \
     $(full_classes_emma_jar)
 
 #######################################
@@ -49,6 +51,37 @@ all_java_sources := $(java_sources)
 
 include $(BUILD_SYSTEM)/java_common.mk
 
+# The layers file allows you to enforce a layering between java packages.
+# Run build/tools/java-layers.py for more details.
+layers_file := $(addprefix $(LOCAL_PATH)/, $(LOCAL_JAVA_LAYERS_FILE))
+
+$(full_classes_compiled_jar): PRIVATE_JAVA_LAYERS_FILE := $(layers_file)
+$(full_classes_compiled_jar): PRIVATE_JAVACFLAGS := $(GLOBAL_JAVAC_DEBUG_FLAGS) $(LOCAL_JAVACFLAGS)
+$(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_FILES :=
+$(full_classes_compiled_jar): PRIVATE_JAR_PACKAGES :=
+$(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_PACKAGES :=
+$(full_classes_compiled_jar): \
+        $(java_sources) \
+        $(java_resource_sources) \
+        $(full_java_lib_deps) \
+        $(jar_manifest_file) \
+        $(proto_java_sources_file_stamp) \
+        $(LOCAL_MODULE_MAKEFILE_DEP) \
+        $(LOCAL_ADDITIONAL_DEPENDENCIES)
+       $(transform-host-java-to-package)
+
+# Run jarjar if necessary, otherwise just copy the file.
+ifneq ($(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)
+       @echo JarJar: $@
+       $(hide) java -jar $(JARJAR) process $(PRIVATE_JARJAR_RULES) $< $@
+else
+$(full_classes_jarjar_jar): $(full_classes_compiled_jar) | $(ACP)
+       @echo Copying: $@
+       $(hide) $(ACP) -fp $< $@
+endif
+
 ifeq (true,$(LOCAL_EMMA_INSTRUMENT))
 $(full_classes_emma_jar): PRIVATE_EMMA_COVERAGE_FILE := $(intermediates.COMMON)/coverage.em
 $(full_classes_emma_jar): PRIVATE_EMMA_INTERMEDIATES_DIR := $(emma_intermediates_dir)
@@ -61,7 +94,7 @@ $(full_classes_emma_jar): PRIVATE_EMMA_COVERAGE_FILTER := *,-emma,-emmarun,-com.
 endif
 # this rule will generate both $(PRIVATE_EMMA_COVERAGE_FILE) and
 # $(full_classes_emma_jar)
-$(full_classes_emma_jar) : $(full_classes_compiled_jar) | $(EMMA_JAR)
+$(full_classes_emma_jar) : $(full_classes_jarjar_jar) | $(EMMA_JAR)
        $(transform-classes.jar-to-emma)
 
 $(built_javalib_jar) : $(full_classes_emma_jar)
@@ -69,25 +102,8 @@ $(built_javalib_jar) : $(full_classes_emma_jar)
        $(hide) $(ACP) -fp $< $@
 
 else # LOCAL_EMMA_INSTRUMENT
-# Directly build into $(built_javalib_jar).
-full_classes_compiled_jar := $(built_javalib_jar)
+$(built_javalib_jar): $(full_classes_jarjar_jar) | $(ACP)
+       @echo Copying: $@
+       $(hide) $(ACP) -fp $< $@
 endif # LOCAL_EMMA_INSTRUMENT
 
-# The layers file allows you to enforce a layering between java packages.
-# Run build/tools/java-layers.py for more details.
-layers_file := $(addprefix $(LOCAL_PATH)/, $(LOCAL_JAVA_LAYERS_FILE))
-
-$(full_classes_compiled_jar): PRIVATE_JAVA_LAYERS_FILE := $(layers_file)
-$(full_classes_compiled_jar): PRIVATE_JAVACFLAGS := $(GLOBAL_JAVAC_DEBUG_FLAGS) $(LOCAL_JAVACFLAGS)
-$(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_FILES :=
-$(full_classes_compiled_jar): PRIVATE_JAR_PACKAGES :=
-$(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_PACKAGES :=
-$(full_classes_compiled_jar): \
-        $(java_sources) \
-        $(java_resource_sources) \
-        $(full_java_lib_deps) \
-        $(jar_manifest_file) \
-        $(proto_java_sources_file_stamp) \
-        $(LOCAL_MODULE_MAKEFILE_DEP) \
-        $(LOCAL_ADDITIONAL_DEPENDENCIES)
-       $(transform-host-java-to-package)