|author||Jiyong Park <email@example.com>||Sun Mar 04 09:40:04 2018 +0900|
|committer||Jiyong Park <firstname.lastname@example.org>||Wed Mar 07 18:05:18 2018 +0900|
Build libprotobuf-java-lite only using core Java SDK APIs libprotobuf-java-lite is now built against core Java APIs which excludes Android-only APIs (classes under android.* packages) and private APIs. "core_current" is a pseudo SDK which is a core Java subset of Android SDK. However, this lib has been using sun.misc.Unsafe which is a hidden API and dependency to the class doesn't seem to be able to be cut easily in the near future. In order to make it possible to build the lib with the SDK only, a stubs library called libcore_private.stubs is defined to provide build-time only information on the hidden APIs exclusively to protobuf. At runtime, the Unsafe class is provide by the OS and protobuf is linked to the class loaded there. Bug: 73204840 Test: m -j libprotobuf-java-lite is successful and does not show any link-type check warning Merged-In: I2fce2662cc65d4e57fc75bbf30ebf9f7d47c6775 (cherry picked from commit dc08924dc7262e5c06c1108f67f66e82598af806) libcore_private.stubs cannot be built with JDK9 The package sun.misc in the stubs library is causing module name conflict when building with JDK9. error: package exists in another module: jdk.unsupported Fixing the error by setting java_version to 1.7 so that modules are not used when building the stubs lib. Bug: 74211600 Test: EXPERIMENTAL_USE_OPENJDK9=true m -j libcore_private.stubs Merged-In: Ifa709bef2dc8e2b11048ef96fc7517d8c25e8a7f (cherry picked from commit 0e4379e7504849d7a2755b9a0264cd7901accc88) libcore_private.stubs is uninstallable Make sure that libcore_private.stubs isn't installed to the device as a standalone jar library. The lib is meant to provide build-time only symbol information to protobuf and thus is not runnable. Bug: 73204840 Test: m -j libcore_private.stubs does not create libcore_private.stubs.jar in /system/framework Merged-In: I7c661211161937dba5ee71fdc4bb8b9f101c5a59 (cherry picked from commit 6297aad4d72232863366d62ae8799ce9cf492a43) Don't force libcore_private.stubs to be built with java 1.7 We no longer need to build libcore_private.stubs with java 1.7, because the library is only built for target and not for host, where it conflicts with the module jdk.unsupported. Bug: 74211600 Test: m -j libprotobuf-java-lite is successful. both host and target variant of the lib is generated. Test: EXPERIMENTAL_USE_OPENJDK9=true m -j libprotobuf-java-lite is also successful. Merged-In: I61a49d537ee6abad29e5661944ffc612a94465b8 (cherry picked from commit ed6d68ed9747c96d54d6773af40060e780443b1a) Change-Id: I256652071b8a11cfbebcf6a4906546e6434f7372
Copyright 2008 Google Inc.
Protocol Buffers (a.k.a., protobuf) are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data. You can find protobuf's documentation on the Google Developers site.
This README file contains protobuf installation instructions. To install protobuf, you need to install the protocol compiler (used to compile .proto files) and the protobuf runtime for your chosen programming language.
The protocol compiler is written in C++. If you are using C++, please follow the C++ Installation Instructions to install protoc along with the C++ runtime.
For non-C++ users, the simplest way to install the protocol compiler is to download a pre-built binary from our release page:
In the downloads section of each release, you can find pre-built binaries in zip packages: protoc-$VERSION-$PLATFORM.zip. It contains the protoc binary as well as a set of standard .proto files distributed along with protobuf.
If you are looking for an old version that is not available in the release page, check out the maven repo here:
These pre-built binaries are only provided for released versions. If you want to use the github master version at HEAD, or you need to modify protobuf code, or you are using C++, it's recommended to build your own protoc binary from source.
If you would like to build protoc binary from source, see the C++ Installation Instructions.
Protobuf supports several different programming languages. For each programming language, you can find instructions in the corresponding source directory about how to install protobuf runtime for that specific language:
|C++ (include C++ runtime and protoc)||src|
The complete documentation for Protocol Buffers is available via the web at: