cocos2dx,ndk编译protobuf

最新推荐文章于 2021-05-28 05:37:24 发布

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最新推荐文章于 2021-05-28 05:37:24 发布

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分类专栏： C++游戏

本文链接：https://blog.youkuaiyun.com/qq275394303/article/details/17530207

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本文介绍了如何在Cocos2d-x项目中利用protobuf作为跨语言通信协议，以提高效率并简化自定义协议的开发过程。通过详细步骤包括下载protobuf、NDK和cygwin，以及在Android.mk中配置编译，解决编译错误，并通过修改config.h文件来适配不同编译器的差异，实现了高效且便捷的通信解决方案。

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protobuf 是google的定义的一种跨语言间通信协议，比json和xml更加高效，

由于后台框架使用java,c++做前端展示，所以选定了protobuf 作为通信协议，免去了自定义协议的辛苦。

1.下载好protobuf 2.5,

2.下载好NDK，下载好cygwin

3,在cocos2dx生成的android下面的jni文件下在Android.mk添加需要编译的protobuf文件。

LOCAL_SRC_FILES := hellocpp/main.cpp \
../../Classes/google/protobuf/io/coded_stream.cc \
../../Classes/google/protobuf/stubs/common.cc \
../../Classes/google/protobuf/descriptor.cc \
../../Classes/google/protobuf/descriptor.pb.cc \
../../Classes/google/protobuf/descriptor_database.cc \
../../Classes/google/protobuf/dynamic_message.cc \
../../Classes/google/protobuf/extension_set.cc \
../../Classes/google/protobuf/extension_set_heavy.cc \
../../Classes/google/protobuf/generated_message_reflection.cc \
../../Classes/google/protobuf/generated_message_util.cc \
../../Classes/google/protobuf/io/gzip_stream.cc \
../../Classes/google/protobuf/message.cc \
../../Classes/google/protobuf/message_lite.cc \
../../Classes/google/protobuf/stubs/once.cc \
../../Classes/google/protobuf/io/printer.cc \
../../Classes/google/protobuf/reflection_ops.cc \
../../Classes/google/protobuf/repeated_field.cc \
../../Classes/google/protobuf/service.cc \
../../Classes/google/protobuf/stubs/structurally_valid.cc \
../../Classes/google/protobuf/stubs/strutil.cc \
../../Classes/google/protobuf/stubs/substitute.cc \
../../Classes/google/protobuf/text_format.cc \
../../Classes/google/protobuf/io/tokenizer.cc \
../../Classes/google/protobuf/unknown_field_set.cc \
../../Classes/google/protobuf/wire_format.cc \
../../Classes/google/protobuf/wire_format_lite.cc \
../../Classes/google/protobuf/io/zero_copy_stream.cc \
../../Classes/google/protobuf/io/zero_copy_stream_impl.cc \
../../Classes/google/protobuf/io/zero_copy_stream_impl_lite.cc \

../../Classes/google/protobuf/stubs/stringprintf.cc \

编译报错，

jni/../../Classes/google/protobuf/stubs/common.cc:48:2: error: #error "No suitable threading library available."jni/../../Classes/google/protobuf/stubs/common.cc:48:2: error: #error "No suitable threading library available." 这是为什么请往下看

3.修改config.h文件

#define HASH_SET_H <ext/hash_set>
#define HASH_MAP_H <ext/hash_map>
#define HASH_NAMESPACE __gnu_cxx
#define HAVE_PTHREAD

定义这几个宏先注示掉原文件中存在的。这里是vs编译器和g++编译器的差异