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# Copyright 2016 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
LOCAL_MOJO_ROOT := $(call my-dir)
JNI_GENERATOR_TOOL := \
$(LOCAL_MOJO_ROOT)/base/android/jni_generator/jni_generator.py
generated_sources_dir := $(local-generated-sources-dir)
generated_files :=
# $(1): a single Java file
define generate-jni-header
java_file := $(1)
local_path := $(LOCAL_PATH)
target_path := $(generated_sources_dir)/jni
gen_h := $$(target_path)/$$(basename $$(notdir $$(java_file)))_jni.h
$$(gen_h) : PRIVATE_PATH := $$(local_path)
$$(gen_h) : PRIVATE_TARGET := $$(target_path)
$$(gen_h) : PRIVATE_CUSTOM_TOOL = \
(cd $$(PRIVATE_PATH) && \
python $$(abspath $$(JNI_GENERATOR_TOOL)) \
--input_file=$$(subst $$(PRIVATE_PATH)/,,$$<) \
--output_dir=$$(abspath $$(PRIVATE_TARGET)) \
--includes base/android/jni_generator/jni_generator_helper.h \
--ptr_type long \
--native_exports_optional)
$$(gen_h) : $$(local_path)/$$(java_file) $$(JNI_GENERATOR_TOOL)
$$(transform-generated-source)
generated_files += $$(gen_h)
endef # define generate-jni-header
# Build each file separately since the build command needs to be done per-file.
$(foreach file,$(LOCAL_JAVA_JNI_FILES),$(eval $(call generate-jni-header,$(file))))
# Add the generated sources to the C includes.
LOCAL_C_INCLUDES += $(generated_sources_dir)
# LOCAL_GENERATED_SOURCES will filter out anything that's not a C/C++ source
# file, but still add the files as dependencies of the other files in the
# module.
LOCAL_GENERATED_SOURCES += $(generated_files)
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