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Linux Build Instructions

This document focuses on building rippled for development purposes under recent Ubuntu linux distributions. To build rippled for Redhat, Fedora or Centos builds, including docker based builds for those distributions, please consult the rippled-package-builder repository.

Note: Ubuntu 16.04 users may need to update their compiler (see the dependencies section). For non Ubuntu distributions, the steps below should work be installing the appropriate dependencies using that distribution's package management tools.

Dependencies

gcc-8 or later is required.

Use apt-get to install the dependencies provided by the distribution

$ apt-get update
$ apt-get install -y gcc g++ wget git cmake pkg-config protobuf-compiler libprotobuf-dev libssl-dev

To build the software in reporting mode, install these additional dependencies:

$ apt-get install -y autoconf flex bison

Advanced users can choose to install newer versions of gcc, or the clang compiler. At this time, rippled only supports protobuf version 2. Using version 3 of protobuf will give errors.

Build Boost

Boost 1.70 or later is required. We recommend downloading and compiling boost with the following process: After changing to the directory where you wish to download and compile boost, run

$ wget https://dl.bintray.com/boostorg/release/1.70.0/source/boost_1_70_0.tar.gz
$ tar -xzf boost_1_70_0.tar.gz
$ cd boost_1_70_0
$ ./bootstrap.sh
$ ./b2 headers
$ ./b2 -j<Num Parallel>

(Optional) Dependencies for Building Source Documentation

Source code documentation is not required for running/debugging rippled. That said, the documentation contains some helpful information about specific components of the application. For more information on how to install and run the necessary components, see this document

Build

Clone the rippled repository

From a shell:

git clone [email protected]:ripple/rippled.git
cd rippled

For a stable release, choose the master branch or one of the tagged releases listed on GitHub.

git checkout master

or to test the latest release candidate, choose the release branch.

git checkout release

If you are doing development work and want the latest set of untested features, you can consider using the develop branch instead.

git checkout develop

Configure Library Paths

If you didn't persistently set the BOOST_ROOT environment variable to the directory in which you compiled boost, then you should set it temporarily.

For example, you built Boost in your home directory ~/boost_1_70_0, you would do for any shell in which you want to build:

export BOOST_ROOT=~/boost_1_70_0

Alternatively, you can add DBOOST_ROOT=~/boost_1_70_0 to the command line when invoking cmake.

Generate Configuration

All builds should be done in a separate directory from the source tree root (a subdirectory is fine). For example, from the root of the ripple source tree:

mkdir my_build
cd my_build

followed by:

cmake -DCMAKE_BUILD_TYPE=Debug ..

If your operating system does not provide static libraries (Arch Linux, and Manjaro Linux, for example), you must configure a non-static build by adding -Dstatic=OFF to the above cmake line.

CMAKE_BUILD_TYPE can be changed as desired for Debug vs. Release builds (all four standard cmake build types are supported).

To select a different compiler (most likely gcc will be found by default), pass -DCMAKE_C_COMPILER=<path/to/c-compiler> and -DCMAKE_CXX_COMPILER=</path/to/cxx-compiler> when configuring. If you prefer, you can instead set CC and CXX environment variables which cmake will honor.

Options During Configuration:

The CMake file defines a number of configure-time options which can be examined by running cmake-gui or ccmake to generated the build. In particular, the unity option allows you to select between the unity and non-unity builds. unity builds are faster to compile since they combine multiple sources into a single compiliation unit - this is the default if you don't specify. nounity builds can be helpful for detecting include omissions or for finding other build-related issues, but aren't generally needed for testing and running.

  • -Dunity=ON to enable/disable unity builds (defaults to ON)
  • -Dassert=ON to enable asserts
  • -Djemalloc=ON to enable jemalloc support for heap checking
  • -Dsan=thread to enable the thread sanitizer with clang
  • -Dsan=address to enable the address sanitizer with clang
  • -Dstatic=ON to enable static linking library dependencies
  • -Dreporting=ON to build code necessary for reporting mode (defaults to OFF)

Several other infrequently used options are available - run ccmake or cmake-gui for a list of all options.

Build

Once you have generated the build system, you can run the build via cmake:

cmake --build . -- -j <parallel jobs>

the -j parameter in this example tells the build tool to compile several files in parallel. This value should be chosen roughly based on the number of cores you have available and/or want to use for building.

When the build completes successfully, you will have a rippled executable in the current directory, which can be used to connect to the network (when properly configured) or to run unit tests.

Optional Installation

The rippled cmake build supports an installation target that will install rippled as well as a support library that can be used to sign transactions. In order to build and install the files, specify the install target when building, e.g.:

cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/opt/local ..
cmake --build . --target install -- -j <parallel jobs>

We recommend specifying CMAKE_INSTALL_PREFIX when configuring in order to explicitly control the install location for your files. Without this setting, cmake will typically install in /usr/local. It is also possible to "rehome" the installation by specifying the DESTDIR env variable during the install phase, e.g.:

DESTDIR=~/mylibs cmake --build . --target install -- -j <parallel jobs>

in which case, the files would be installed in the CMAKE_INSTALL_PREFIX within the specified DESTDIR path.

Signing Library

If you want to use the signing support library to create an application, there are two simple mechanisms with cmake + git that facilitate this.

With either option below, you will have access to a library from the rippled project that you can link to in your own project's CMakeLists.txt, e.g.:

target_link_libraries (my-signing-app Ripple::xrpl_core)
Option 1: git submodules + add_subdirectory

First, add the rippled repo as a submodule to your project repo:

git submodule add -b master https://github.com/ripple/rippled.git vendor/rippled

change the vendor/rippled path as desired for your repo layout. Furthermore, change the branch name if you want to track a different rippled branch, such as develop.

Second, to bring this submodule into your project, just add the rippled subdirectory:

add_subdirectory (vendor/rippled)
Option 2: installed rippled + find_package

First, follow the "Optional Installation" instructions above to build and install the desired version of rippled.

To make use of the installed files, add the following to your CMakeLists.txt file:

set (CMAKE_MODULE_PATH /opt/local/lib/cmake/ripple ${CMAKE_MODULE_PATH})
find_package(Ripple REQUIRED)

change the /opt/local module path above to match your chosen installation prefix.

Unit Tests (Recommended)

rippled builds a set of unit tests into the server executable. To run these unit tests after building, pass the --unittest option to the compiled rippled executable. The executable will exit with summary info after running the unit tests.