| # Copyright (C) 2015 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| # Manages use of annotation processors. |
| # |
| # At the moment both the -processorpath and the -processor |
| # flags must be specified in order to use annotation processors |
| # as a code indexing tool that wraps javac doesn't as yet support |
| # the same behaviour as standard javac with regard to use of |
| # annotation processors. In particular it: |
| # - doesn't default -processorpath to be the same as -classpath |
| # - doesn't scan processorpath to automatically discover processors |
| # - doesn't support a comma separated list of processor class names |
| # on a single -processor option so need on option per class name. |
| # |
| # Input variables: |
| # |
| # PROCESSOR_LIBRARIES := <list of library names> |
| # Similar to names added to LOCAL_JAVA_LIBRARIES. |
| # |
| # PROCESSOR_CLASSES := <list of processor class names> |
| # |
| # Upon exit various LOCAL_ variables have been updated and the |
| # input variables have been cleared. |
| |
| # Map the library names to actual JARs. |
| PROCESSOR_JARS := $(call java-lib-deps, $(PROCESSOR_LIBRARIES), true) |
| |
| # Add a javac -processorpath flag. |
| LOCAL_JAVACFLAGS += -processorpath $(call normalize-path-list,$(PROCESSOR_JARS)) |
| |
| # Specify only one processor class per -processor option as |
| # the indexing tool does not parse the -processor value as a |
| # comma separated list. |
| LOCAL_JAVACFLAGS += $(foreach class,$(PROCESSOR_CLASSES),-processor $(class)) |
| |
| # Create a source directory into which the code will be generated. |
| GENERATED_SOURCE_DIR := $(local-generated-sources-dir)/annotation_processor_output/ |
| |
| # Tell javac to generate source files in the source directory. |
| LOCAL_JAVACFLAGS += -s $(GENERATED_SOURCE_DIR) |
| LOCAL_GENERATED_SOURCES := $(GENERATED_SOURCE_DIR) |
| |
| # Add dependency between the jar being built and the processor jars so that |
| # they are built before this one. |
| LOCAL_ADDITIONAL_DEPENDENCIES += $(PROCESSOR_JARS) $(GENERATED_SOURCE_DIR) |
| |
| $(GENERATED_SOURCE_DIR): |
| mkdir -p $@ |
| |
| # Clean up all the extra variables to make sure that they don't escape to |
| # another module. |
| PROCESSOR_LIBRARIES := |
| PROCESSOR_CLASSES := |
| PROCESSOR_JARS := |
| GENERATED_SOURCE_DIR := |