如何在 linux ubuntu 上安装 flatc 和 flatbuffers

Question

如果我们在 Linux Ubuntu 上安装 flatbuffers，我们将无法从任何地方使用 shortc flatc 命令进行编译，我们该怎么做？

例如：我想在 package.json 中使用一些命令 “flatc -o path/src/app/core/providers/flatbuffers .....”

为了做到这一点还不足以安装flatbuffers，我们还需要进行一些额外的操作——添加符号链接等等。

Answer 1

在 Ubuntu 20.04 (focal) 中，它已经在 apt 存储库中 (https://packages.ubuntu.com/focal/flatbuffers-compiler)，因此您可以安装它：

sudo apt update
sudo apt install -y flatbuffers-compiler

对于 Ubuntu 18.04（仿生），您可以使用 PPA (https://launchpad.net/~hnakamur/+archive/ubuntu/flatbuffers)：

sudo apt-add-repository ppa:hnakamur/flatbuffers
sudo apt update
sudo apt install -y flatbuffers-compiler

两者都有点旧（1.11），但如果你不使用最新的功能，那么这应该是相当可靠的。

Answer 2

linux ubuntu 的 flatc 和 flatbuffers 解决方案：

1. 选择“安装文件夹”
2. cd "安装文件夹"
3. git 克隆https://github.com/google/flatbuffers.git
4. cd 平面缓冲区
5. cmake -G "Unix Makefiles"（如果需要，安装 cmake）
6. 制作
7. sudo ln -s /full-path-to-flatbuffer/flatbuffers/flatc /usr/local/bin/flatc
8. chmod +x /full-path-to-flatbuffer/flatbuffers/flatc
9. 以“flatc”身份在任何地方运行

Answer 3

Olexandr 的答案仅适用于 flatc 二进制文件。

要使用 cmake 从源代码构建和安装所有平面缓冲区，请按照说明 here：

• 克隆repo & cd flatbuffers
• 为 linux ubuntu 生成构建文件

cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release

• 编译

make

• 安装

sudo make install

Install the project...
-- Install configuration: "Release"
-- Installing: /usr/local/include/flatbuffers
-- Installing: /usr/local/include/flatbuffers/stl_emulation.h
-- Installing: /usr/local/include/flatbuffers/flexbuffers.h
-- Installing: /usr/local/include/flatbuffers/minireflect.h
-- Installing: /usr/local/include/flatbuffers/flatbuffers.h
-- Installing: /usr/local/include/flatbuffers/pch
-- Installing: /usr/local/include/flatbuffers/pch/flatc_pch.h
-- Installing: /usr/local/include/flatbuffers/pch/pch.h
-- Installing: /usr/local/include/flatbuffers/flatc.h
-- Installing: /usr/local/include/flatbuffers/code_generators.h
-- Installing: /usr/local/include/flatbuffers/util.h
-- Installing: /usr/local/include/flatbuffers/grpc.h
-- Installing: /usr/local/include/flatbuffers/base.h
-- Installing: /usr/local/include/flatbuffers/registry.h
-- Installing: /usr/local/include/flatbuffers/hash.h
-- Installing: /usr/local/include/flatbuffers/reflection_generated.h
-- Installing: /usr/local/include/flatbuffers/idl.h
-- Installing: /usr/local/include/flatbuffers/reflection.h
-- Installing: /usr/local/lib/cmake/flatbuffers/FlatbuffersConfig.cmake
-- Installing: /usr/local/lib/cmake/flatbuffers/FlatbuffersConfigVersion.cmake
-- Installing: /usr/local/lib/libflatbuffers.a
-- Installing: /usr/local/lib/cmake/flatbuffers/FlatbuffersTargets.cmake
-- Installing: /usr/local/lib/cmake/flatbuffers/FlatbuffersTargets-release.cmake
-- Installing: /usr/local/bin/flatc
-- Installing: /usr/local/lib/cmake/flatbuffers/FlatcTargets.cmake
-- Installing: /usr/local/lib/cmake/flatbuffers/FlatcTargets-release.cmake

Answer 4

这里是 CMake 文件，让生活更轻松。这些 cmake 命令将从 git repo 下载 flatbuffer 并安装在 linux 系统范围内。在构建运行“sudo make install”后安装。

---------将以下内容保存到CMakeLists.txt文件中并运行cmake-----------

cmake_minimum_required(VERSION 3.11)
cmake_policy(SET CMP0048 NEW)

project(flatbuffers-external
    VERSION 2.0.0
    DESCRIPTION "Flatbuffers Build"
)

option(FLATBUFFERS_BUILD_TESTS "Enable the build of tests and samples." OFF)
option(FLATBUFFERS_BUILD_FLATC "Enable the build of the flatbuffers compiler"
       OFF)
option(FLATBUFFERS_STATIC_FLATC "Build flatbuffers compiler with -static flag"
       OFF)
option(FLATBUFFERS_BUILD_FLATHASH "Enable the build of flathash" OFF)


include(FetchContent)
FetchContent_Declare(
    flatbuffers_cpp
    GIT_REPOSITORY  https://github.com/google/flatbuffers.git
    GIT_TAG         v2.0.0
    PREFIX            "${PROJECT_SOURCE_DIR}/tp"
    SOURCE_DIR        "${PROJECT_SOURCE_DIR}/tp/fb"
    BINARY_DIR        "${PROJECT_SOURCE_DIR}/tp/fb-build"
)

FetchContent_MakeAvailable(flatbuffers_cpp)

Answer 5

对于 Windows，您可以从 https://github.com/google/flatbuffers/releases 下载 zip 文件夹并解压缩。
删除之前用于 flatc 的环境路径变量（如果存在）并添加提取的 flatc.exe 所在的路径。