How to build protocol buffer by Android NDK [closed]

2023-03-30 05:22 问答作者：

开发者_如何转开发 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 10 years ago.

I want to built a native version of Google's protocol buffers library.

How would I do that?

I Use this Android.mk and build SUCCESSFUL



    # Copyright (C) 2009 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.
    #
    #

    LOCAL_PATH := $(call my-dir)
    include $(CLEAR_VARS)
    CC_LITE_SRC_FILES := \
        src/google/protobuf/stubs/common.cc                              \
        src/google/protobuf/stubs/once.cc                                \
        src/google/protobuf/stubs/hash.cc                                \
        src/google/protobuf/extension_set.cc                             \
        src/google/protobuf/generated_message_util.cc                    \
        src/google/protobuf/message_lite.cc                              \
        src/google/protobuf/repeated_field.cc                            \
        src/google/protobuf/wire_format_lite.cc                          \
        src/google/protobuf/io/coded_stream.cc                           \
        src/google/protobuf/io/zero_copy_stream.cc                       \
        src/google/protobuf/io/zero_copy_stream_impl_lite.cc


    COMPILER_SRC_FILES :=  \
        src/google/protobuf/descriptor.cc \
        src/google/protobuf/descriptor.pb.cc \
        src/google/protobuf/descriptor_database.cc \
        src/google/protobuf/dynamic_message.cc \
        src/google/protobuf/extension_set.cc \
        src/google/protobuf/extension_set_heavy.cc \
        src/google/protobuf/generated_message_reflection.cc \
        src/google/protobuf/generated_message_util.cc \
        src/google/protobuf/message.cc \
        src/google/protobuf/message_lite.cc \
        src/google/protobuf/reflection_ops.cc \
        src/google/protobuf/repeated_field.cc \
        src/google/protobuf/service.cc \
        src/google/protobuf/text_format.cc \
        src/google/protobuf/unknown_field_set.cc \
        src/google/protobuf/wire_format.cc \
        src/google/protobuf/wire_format_lite.cc \
        src/google/protobuf/compiler/code_generator.cc \
        src/google/protobuf/compiler/command_line_interface.cc \
        src/google/protobuf/compiler/importer.cc \
        src/google/protobuf/compiler/main.cc \
        src/google/protobuf/compiler/parser.cc \
        src/google/protobuf/compiler/plugin.cc \
        src/google/protobuf/compiler/plugin.pb.cc \
        src/google/protobuf/compiler/subprocess.cc \
        src/google/protobuf/compiler/zip_writer.cc \
        src/google/protobuf/compiler/cpp/cpp_enum.cc \
        src/google/protobuf/compiler/cpp/cpp_enum_field.cc \
        src/google/protobuf/compiler/cpp/cpp_extension.cc \
        src/google/protobuf/compiler/cpp/cpp_field.cc \
        src/google/protobuf/compiler/cpp/cpp_file.cc \
        src/google/protobuf/compiler/cpp/cpp_generator.cc \
        src/google/protobuf/compiler/cpp/cpp_helpers.cc \
        src/google/protobuf/compiler/cpp/cpp_message.cc \
        src/google/protobuf/compiler/cpp/cpp_message_field.cc \
        src/google/protobuf/compiler/cpp/cpp_primitive_field.cc \
        src/google/protobuf/compiler/cpp/cpp_service.cc \
        src/google/protobuf/compiler/cpp/cpp_string_field.cc \
        src/google/protobuf/compiler/java/java_enum.cc \
        src/google/protobuf/compiler/java/java_enum_field.cc \
        src/google/protobuf/compiler/java/java_extension.cc \
        src/google/protobuf/compiler/java/java_field.cc \
        src/google/protobuf/compiler/java/java_file.cc \
        src/google/protobuf/compiler/java/java_generator.cc \
        src/google/protobuf/compiler/java/java_helpers.cc \
        src/google/protobuf/compiler/java/java_message.cc \
        src/google/protobuf/compiler/java/java_message_field.cc \
        src/google/protobuf/compiler/java/java_primitive_field.cc \
        src/google/protobuf/compiler/java/java_service.cc \
        src/google/protobuf/compiler/javamicro/javamicro_enum.cc \
        src/google/protobuf/compiler/javamicro/javamicro_enum_field.cc \
        src/google/protobuf/compiler/javamicro/javamicro_field.cc \
        src/google/protobuf/compiler/javamicro/javamicro_file.cc \
        src/google/protobuf/compiler/javamicro/javamicro_generator.cc \
        src/google/protobuf/compiler/javamicro/javamicro_helpers.cc \
        src/google/protobuf/compiler/javamicro/javamicro_message.cc \
        src/google/protobuf/compiler/javamicro/javamicro_message_field.cc \
        src/google/protobuf/compiler/javamicro/javamicro_primitive_field.cc \
        src/google/protobuf/compiler/python/python_generator.cc \
        src/google/protobuf/io/coded_stream.cc \
        src/google/protobuf/io/gzip_stream.cc \
        src/google/protobuf/io/printer.cc \
        src/google/protobuf/io/tokenizer.cc \
        src/google/protobuf/io/zero_copy_stream.cc \
        src/google/protobuf/io/zero_copy_stream_impl.cc \
        src/google/protobuf/io/zero_copy_stream_impl_lite.cc \
        src/google/protobuf/stubs/common.cc \
        src/google/protobuf/stubs/hash.cc \
        src/google/protobuf/stubs/once.cc \
        src/google/protobuf/stubs/structurally_valid.cc \
        src/google/protobuf/stubs/strutil.cc \
        src/google/protobuf/stubs/substitute.cc

    # C++ full library
    # =======================================================
    #include $(CLEAR_VARS)

    LOCAL_MODULE := libprotobuf
    LOCAL_MODULE_TAGS := optional

    LOCAL_CPP_EXTENSION := .cc

    LOCAL_SRC_FILES := \
        $(CC_LITE_SRC_FILES)                                             \
        src/google/protobuf/stubs/strutil.cc                             \
        src/google/protobuf/stubs/substitute.cc                          \
        src/google/protobuf/stubs/structurally_valid.cc                  \
        src/google/protobuf/descriptor.cc                                \
        src/google/protobuf/descriptor.pb.cc                             \
        src/google/protobuf/descriptor_database.cc                       \
        src/google/protobuf/dynamic_message.cc                           \
        src/google/protobuf/extension_set_heavy.cc                       \
        src/google/protobuf/generated_message_reflection.cc              \
        src/google/protobuf/message.cc                                   \
        src/google/protobuf/reflection_ops.cc                            \
        src/google/protobuf/service.cc                                   \
        src/google/protobuf/text_format.cc                               \
        src/google/protobuf/unknown_field_set.cc                         \
        src/google/protobuf/wire_format.cc                               \
        src/google/protobuf/io/gzip_stream.cc                            \
        src/google/protobuf/io/printer.cc                                \
        src/google/protobuf/io/tokenizer.cc                              \
        src/google/protobuf/io/zero_copy_stream_impl.cc                  \
        src/google/protobuf/compiler/importer.cc                         \
        src/google/protobuf/compiler/parser.cc

    LOCAL_C_INCLUDES := \
        $(LOCAL_PATH)/src

    LOCAL_C_INCLUDES := \
        $(LOCAL_PATH)/android \
        bionic \
        $(LOCAL_PATH)/src \
        $(JNI_H_INCLUDE)

    LOCAL_SHARED_LIBRARIES := \
        libz libcutils libutils
    LOCAL_LDLIBS := -lz
    # stlport conflicts with the host stl library
    ifneq ($(TARGET_SIMULATOR),true)
    LOCAL_C_INCLUDES += external/stlport/stlport
    LOCAL_SHARED_LIBRARIES += libstlport
    endif

    # Define the header files to be copied
    #LOCAL_COPY_HEADERS := \
    #    src/google/protobuf/stubs/once.h \
    #    src/google/protobuf/stubs/common.h \
    #    src/google/protobuf/io/coded_stream.h \
    #    src/google/protobuf/generated_message_util.h \
    #    src/google/protobuf/repeated_field.h \
    #    src/google/protobuf/extension_set.h \
    #    src/google/protobuf/wire_format_lite_inl.h
    #
    #LOCAL_COPY_HEADERS_TO := $(LOCAL_MODULE)

    LOCAL_CFLAGS := -DGOOGLE_PROTOBUF_NO_RTTI

    include $(BUILD_SHARED_LIBRARY)

Android.mk mentioned above works fine, thanks a lot.

I would like to describe all the steps for building protobuf for android.

Configure sources for android. Use the following script (got it here: http://habrahabr.ru/post/119693/):

PREBUILT=/Users/user/android-ndk-r7b/toolchains/arm-linux-androideabi-4.4.3

PLATFORM=/Users/user/android-ndk-r7b/platforms/android-3/arch-arm/

export CC="/Users/user/android-ndk-r7b/toolchains/arm-linux-androideabi- 4.4.3/prebuilt/darwin-x86/bin/arm-linux-androideabi-gcc"

export CFLAGS="-fPIC -DANDROID -nostdlib"

export ANDROID_ROOT="/Users/user/android-ndk-r7b"

export LDFLAGS="-Wl,-rpath-link=$ANDROID_ROOT/platforms/android-3/arch-arm/usr/lib/ -L$ANDROID_ROOT/platforms/android-3/arch-arm/usr/lib/"

export CPPFLAGS="-I$ANDROID_ROOT/platforms/android-3/arch-arm/usr/include/"

export LIBS="-lc "

./configure --host=arm-eabi

Delete the following lines from mentioned above Android.mk file:

src/google/protobuf/stubs/strutil.cc             \
src/google/protobuf/stubs/substitute.cc                          \
src/google/protobuf/stubs/structurally_valid.cc                  \
src/google/protobuf/descriptor.cc                                \
src/google/protobuf/descriptor.pb.cc                             \
src/google/protobuf/descriptor_database.cc                       \
src/google/protobuf/dynamic_message.cc                           \
src/google/protobuf/extension_set_heavy.cc                       \
src/google/protobuf/generated_message_reflection.cc              \
src/google/protobuf/message.cc                                   \
src/google/protobuf/reflection_ops.cc                            \
src/google/protobuf/service.cc                                   \
src/google/protobuf/text_format.cc                               \
src/google/protobuf/unknown_field_set.cc                         \
src/google/protobuf/wire_format.cc                               \
src/google/protobuf/io/gzip_stream.cc                            \
src/google/protobuf/io/printer.cc                                \
src/google/protobuf/io/tokenizer.cc                              \
src/google/protobuf/io/zero_copy_stream_impl.cc                  \
src/google/protobuf/compiler/importer.cc                         \
src/google/protobuf/compiler/parser.cc

It is needed for building lite version of library. Unfortunately full version of the lib works just from Android 2.3. I tested lite version for Android 1.6, 2.1, 2.3.

build the library using ndk-build.
for generating c++ files (using protoc compiler) for the lite library it is needed to include: option optimize_for = LITE_RUNTIME; in .proto file.

继续阅读：android-ndk porting protocol-buffers

How to build protocol buffer by Android NDK [closed]

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