From d0e0114f311530cb74858381d3a58cbaea5edb44 Mon Sep 17 00:00:00 2001 From: Feng Xiao Date: Thu, 21 Jan 2016 17:06:38 -0800 Subject: Refactor README.md. Move the original README.md to src since it's talking about C++ exclusively and add a more general README.md to document how to install protoc for all languages. --- README.md | 231 ++++++++++++-------------------------------------------------- 1 file changed, 45 insertions(+), 186 deletions(-) (limited to 'README.md') diff --git a/README.md b/README.md index 19723d36..070d579b 100644 --- a/README.md +++ b/README.md @@ -7,207 +7,66 @@ Copyright 2008 Google Inc. https://developers.google.com/protocol-buffers/ -C++ Installation - Unix ------------------------ +Overview +-------- -To build protobuf from source, the following tools are needed: +Protocol Buffers (a.k.a., protobuf) are Google's language-neutral, +platform-neutral, extensible mechanism for serializing structured data. You +can find [protobuf's documentaion on the Google Developers site](https://developers.google.com/protocol-buffers/). - * autoconf - * automake - * libtool - * curl (used to download gmock) +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. -On Ubuntu, you can install them with: +Protocol Compiler Installation +------------------------------ - $ sudo apt-get install autoconf automake libtool curl +The protocol compiler is written in C++. If you are using C++, please follow +the [C++ Installation Instructions](src/README.md) to install protoc along +with the C++ runtime. -On other platforms, please use the corresponding package managing tool to -install them before proceeding. +For non-C++ users, the simplest way to install the protocol compiler is to +download a pre-built binary from our release page: -If you get the source from github, you need to generate the configure script -first: + [https://github.com/google/protobuf/releases](https://github.com/google/protobuf/releases) - $ ./autogen.sh +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. -This will download gmock source (which is used for C++ Protocol Buffer -unit-tests) to the current directory and run automake, autoconf, etc. -to generate the configure script and various template makefiles. +If you are looking for an old version that is not available in the release +page, check out the maven repo here: -You can skip this step if you are using a release package (which already -contains gmock and the configure script). + [http://repo1.maven.org/maven2/com/google/protobuf/protoc/](http://repo1.maven.org/maven2/com/google/protobuf/protoc/) -To build and install the C++ Protocol Buffer runtime and the Protocol -Buffer compiler (protoc) execute the following: +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. - $ ./configure - $ make - $ make check - $ sudo make install - $ sudo ldconfig # refresh shared library cache. +If you would like to build protoc binary from source, see the [C++ Installaton +Instructions](src/README.md). -If "make check" fails, you can still install, but it is likely that -some features of this library will not work correctly on your system. -Proceed at your own risk. +Protobuf Runtime Installation +----------------------------- -For advanced usage information on configure and make, please refer to the -autoconf documentation: +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: - http://www.gnu.org/software/autoconf/manual/autoconf.html#Running-configure-Scripts +| Language | Source | +|--------------------------------------|-------------------------------------------------------| +| C++ (include C++ runtime and protoc) | [src](src) | +| Java | [java](java) | +| Python | [python](python) | +| Objective-C | [objectivec](objectivec) | +| C# | [csharp](csharp) | +| JavaNano | [javanano](javanano) | +| JavaScript | [js](js) | +| Ruby | [ruby](ruby) | +| Go | [golang/protobuf](https://github.com/golang/protobuf) | +| PHP | TBD | -**Hint on install location** - - By default, the package will be installed to /usr/local. However, - on many platforms, /usr/local/lib is not part of LD_LIBRARY_PATH. - You can add it, but it may be easier to just install to /usr - instead. To do this, invoke configure as follows: - - ./configure --prefix=/usr - - If you already built the package with a different prefix, make sure - to run "make clean" before building again. - -**Compiling dependent packages** - - To compile a package that uses Protocol Buffers, you need to pass - various flags to your compiler and linker. As of version 2.2.0, - Protocol Buffers integrates with pkg-config to manage this. If you - have pkg-config installed, then you can invoke it to get a list of - flags like so: - - pkg-config --cflags protobuf # print compiler flags - pkg-config --libs protobuf # print linker flags - pkg-config --cflags --libs protobuf # print both - - For example: - - c++ my_program.cc my_proto.pb.cc `pkg-config --cflags --libs protobuf` - - Note that packages written prior to the 2.2.0 release of Protocol - Buffers may not yet integrate with pkg-config to get flags, and may - not pass the correct set of flags to correctly link against - libprotobuf. If the package in question uses autoconf, you can - often fix the problem by invoking its configure script like: - - configure CXXFLAGS="$(pkg-config --cflags protobuf)" \ - LIBS="$(pkg-config --libs protobuf)" - - This will force it to use the correct flags. - - If you are writing an autoconf-based package that uses Protocol - Buffers, you should probably use the PKG_CHECK_MODULES macro in your - configure script like: - - PKG_CHECK_MODULES([protobuf], [protobuf]) - - See the pkg-config man page for more info. - - If you only want protobuf-lite, substitute "protobuf-lite" in place - of "protobuf" in these examples. - -**Note for Mac users** - - For a Mac system, Unix tools are not available by default. You will first need - to install Xcode from the Mac AppStore and then run the following command from - a terminal: - - $ sudo xcode-select --install - - To install Unix tools, you can install "port" following the instructions at - https://www.macports.org . This will reside in /opt/local/bin/port for most - Mac installations. - - $ sudo /opt/local/bin/port install autoconf automake libtool - - Then follow the Unix instructions above. - -**Note for cross-compiling** - - The makefiles normally invoke the protoc executable that they just - built in order to build tests. When cross-compiling, the protoc - executable may not be executable on the host machine. In this case, - you must build a copy of protoc for the host machine first, then use - the --with-protoc option to tell configure to use it instead. For - example: - - ./configure --with-protoc=protoc - - This will use the installed protoc (found in your $PATH) instead of - trying to execute the one built during the build process. You can - also use an executable that hasn't been installed. For example, if - you built the protobuf package for your host machine in ../host, - you might do: - - ./configure --with-protoc=../host/src/protoc - - Either way, you must make sure that the protoc executable you use - has the same version as the protobuf source code you are trying to - use it with. - -**Note for Solaris users** - - Solaris 10 x86 has a bug that will make linking fail, complaining - about libstdc++.la being invalid. We have included a work-around - in this package. To use the work-around, run configure as follows: - - ./configure LDFLAGS=-L$PWD/src/solaris - - See src/solaris/libstdc++.la for more info on this bug. - -**Note for HP C++ Tru64 users** - - To compile invoke configure as follows: - - ./configure CXXFLAGS="-O -std ansi -ieee -D__USE_STD_IOSTREAM" - - Also, you will need to use gmake instead of make. - -**Note for AIX users** - - Compile using the IBM xlC C++ compiler as follows: - - ./configure CXX=xlC - - Also, you will need to use GNU `make` (`gmake`) instead of AIX `make`. - -C++ Installation - Windows --------------------------- - -If you only need the protoc binary, you can download it from the release -page: - - https://github.com/google/protobuf/releases - -In the downloads section, download the zip file protoc-$VERSION-win32.zip. -It contains the protoc binary as well as public proto files of protobuf -library. - -To build from source using Microsoft Visual C++, see cmake/README.md. - -To build from source using Cygwin or MinGW, follow the Unix installation -instructions, above. - -Binary Compatibility Warning ----------------------------- - -Due to the nature of C++, it is unlikely that any two versions of the -Protocol Buffers C++ runtime libraries will have compatible ABIs. -That is, if you linked an executable against an older version of -libprotobuf, it is unlikely to work with a newer version without -re-compiling. This problem, when it occurs, will normally be detected -immediately on startup of your app. Still, you may want to consider -using static linkage. You can configure this package to install -static libraries only using: - - ./configure --disable-shared - -Java and Python Installation ----------------------------- - -The Java and Python runtime libraries for Protocol Buffers are located -in the java and python directories. See the README file in each -directory for more information on how to compile and install them. -Note that both of them require you to first install the Protocol -Buffer compiler (protoc), which is part of the C++ package. Usage ----- -- cgit v1.2.3