Android ndk 如何用androidndk构建协议缓冲区_Android Ndk_Protocol Buffers_Porting

Android ndk 如何用androidndk构建协议缓冲区

android-ndk protocol-buffers

Android ndk 如何用androidndk构建协议缓冲区,android-ndk,protocol-buffers,porting,Android Ndk,Protocol Buffers,Porting,我想建立谷歌协议缓冲区库的本机版本。我将如何做到这一点？我使用这个Android.mk并成功构建 # 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 Lic

我想建立谷歌协议缓冲区库的本机版本。

我将如何做到这一点？

我使用这个Android.mk并成功构建



    # 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)

上面提到的Android.mk工作正常，非常感谢

我想描述一下为android构建protobuf的所有步骤

为android配置源代码。使用以下脚本（在此处找到：）：
预构建=/Users/user/android-ndk-r7b/toolschains/arm-linux-androideabi-4.4.3
平台=/Users/user/android-ndk-r7b/platforms/android-3/arch-arm/
export CC=“/Users/user/android-ndk-r7b/toolschains/arm-linux-androideabi-4.4.3/prebuild/darwin-x86/bin/arm-linux-androideabi-gcc”
export CFLAGS=“-fPIC-DANDROID-nostdlib”
导出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\u ROOT/platforms/ANDROID-3/arch arm/usr/include/”
导出LIBS=“-lc”
./configure--host=arm eabi

从上述Android.mk文件中删除以下行：

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

它是构建lite版本的库所必需的。不幸的是，lib的完整版本只能在android2.3上运行。我测试了Android 1.6、2.1、2.3的lite版本

使用ndk build构建库

只是一个建议。首先在Java中构建它，然后如果需要进一步的优化，就转到NDK。至少在爪哇，你会得到基本的协议。你是否尝试过简单地使用谷歌提供的C++实现？这里是我的答案：这有点过时了。对于protobuf 2.4.1，hash.cc不存在，因此应将其删除。如果升级到protobug 2.5.0，则需要添加src/google/protobuf/stubs/stringprintf。cc@gkanwar当我进行您建议的编辑时，lib会编译，但当我尝试调用依赖于protobuf libs的方法时，会出现此错误：由：java.lang.UnsatisfiedLinkError:无法加载库：reloc_library[1306]：37找不到“strof”。。。使用“nm”时，我注意到strof方法已列出，但在其旁边列出了一个“U”。protobuf是否需要一个我没有包含的库来工作？@MichaelNguyen strtof应该住在stl库中。libprotobuf使用stlport；答案中描述的构建文件将其链接为共享库而不是静态库，因此您也应该从Java加载libstlport。你可以在我正在做的一个项目中找到一个有效的例子：你是如何构建它的？我犯了很多错误。我正在试着摆脱标签2.6.1。我得到的错误像

/src/google/protobuf/stubs/hash.h:172:55:error:expected'{'before'好的，我终于构建了它。改用这个：你必须大量修改ANdroid.mk文件才能让它工作。当我删除上面提到的行时，我得到一个编译错误。你确定需要删除这些行吗？你似乎忘了在CPPFLAGS:export sysroot=$NDK_ROOT/platforms/andr设置sysrootoid-9/arch arm
导出CPPFLAGS=“--sysroot=$sysroot”
/configure options