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INSTALL.md

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Installation Instructions

These are instructions for building stellar-core from source.

For a potentially quicker set up, the following projects could be good alternatives:

Which version to run?

In general, you should aim to run the most recent stable version of core, so make sure to keep track of new releases.

We highly recommend upgrading to the latest core release within 30 days of a release as highlighted in our protocol and security release notes in case the release contains security fixes that could be exploited (we do not disclose ahead of time if a release contains security fixes to give people time to upgrade).

As a consequence, old, potentially insecure or abandoned nodes running releases that are older than 90 days will get blocked by newer nodes (if there are newer releases of course).

Picking a version to run

Best is to use the latest stable release that can be downloaded from https://github.com/stellar/stellar-core/releases

Alternatively, branches are organized in the following way:

branch name description quality bar
master development branch all unit tests passing
testnet version deployed to testnet acceptance tests passing
prod version currently deployed on the live network no recall class issue found in testnet and staging

For convenience, we also keep a record in the form of release tags of the versions that make it to production:

  • pre-releases are versions that get deployed to testnet
  • releases are versions that made it all the way to production

Containerized dev environment

We maintain a pre-configured Docker configuration ready for development with VSCode.

See the dev container's README for more detail.

Runtime dependencies

stellar-core does not have many dependencies.

If core was configured (see below) to work with Postgresql, a local Postgresql server will need to be deployed to the same host.

To install Postgresql, follow instructions from the Postgresql download page.

Build Dependencies

  • c++ toolchain and headers that supports c++17
    • clang >= 12.0
    • g++ >= 10.0
  • pkg-config
  • bison and flex
  • libpq-dev unless you ./configure --disable-postgres in the build step below.
  • 64-bit system
  • clang-format-12 (for make format to work)
  • sed and perl
  • libunwind-dev
  • Rust toolchain (see Installing Rust subsection)
    • cargo >= 1.74
    • rust >= 1.74

Installing Rust

Building the Rust components requires the cargo package manager and build system, as well as the rustc compiler, both version 1.74 or later.

We recommend installing Rust using the Rust project's rustup installer, which can be found on rustup.rs.

We also include a script in the repository install-rust.sh that downloads and runs a known version of rustup on x64-linux hosts, such as those used for CI and packaging.

Ubuntu

Ubuntu 20.04

You can install the test toolchain to build and run stellar-core with the latest version of the llvm toolchain.

Alternatively, if you want to just depend on stock Ubuntu, you will have to build with clang and have use libc++ instead of libstdc++ when compiling.

Ubuntu 20.04 has clang-12 available, that you can install with

# install clang-12 toolchain
sudo apt-get install clang-12

After installing packages, head to building with clang and libc++.

Adding the test toolchain (optional)

# NOTE: newer version of the compilers are not
#    provided by stock distributions
#    and are provided by the /test toolchain
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update

Installing packages

# common packages
sudo apt-get install git build-essential pkg-config autoconf automake libtool bison flex libpq-dev libunwind-dev parallel sed perl
# if using clang
sudo apt-get install clang-12
# clang with libstdc++
sudo apt-get install gcc-10
# if using g++ or building with libstdc++
# sudo apt-get install gcc-10 g++-10 cpp-10

In order to make changes, you'll need to install the proper version of clang-format.

In order to install the llvm (clang) toolchain, you may have to follow instructions on https://apt.llvm.org/

sudo apt-get install clang-format-12

MacOS

When building on MacOS, here's some dependencies you'll need:

  • Install xcode
  • Install homebrew
  • brew install libsodium libtool autoconf automake pkg-config libpq openssl parallel ccache bison gnu-sed perl coreutils

You'll also need to configure pkg-config by adding the following to your shell (.zshenv or .zshrc):

export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$(brew --prefix)/opt/libpq/lib/pkgconfig"
export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$(brew --prefix)/opt/openssl@3/lib/pkgconfig"
export PATH="$(brew --prefix bison)/bin:$PATH"
  • Install clang-format-12

Note: brew does not contain a cask for clang-format-12, and other versions of clang-format have different formatting behavior.

To install clang-format-12, run the commands listed below.

# Download clang+llvm 12.0.0 for x86_64 apple darwin.
curl -OL https://github.com/llvm/llvm-project/releases/download/llvmorg-12.0.0/clang+llvm-12.0.0-x86_64-apple-darwin.tar.xz 
# Unarchive the download.
tar -xf clang+llvm-12.0.0-x86_64-apple-darwin.tar.xz 
# Copy the contents of bin/clang-format to /usr/local/bin.
sudo cp -R clang+llvm-12.0.0-x86_64-apple-darwin/bin/clang-format /usr/local/bin
# Ensure "clang-format version 12.0.0" is printed.
clang-format --version

Note: macOS will block the execution for security purposes, open System Preferences > Security & Privacy and allow clang-format to run.

Windows

See INSTALL-Windows.md

Basic Installation

  • git clone https://github.com/stellar/stellar-core.git
  • cd stellar-core
  • git submodule init
  • git submodule update
  • Type ./autogen.sh.
  • Type ./configure (If configure complains about compiler versions, try CXX=clang-12 ./configure or CXX=g++-10 ./configure or similar, depending on your compiler.)
  • Type make or make -j<N> (where <N> is the number of parallel builds, a number less than the number of CPU cores available, e.g. make -j3)
  • Type make check to run tests.
  • Type make install to install.

Building with clang and libc++

On some systems, building with libc++, LLVM's version of the standard library can be done instead of libstdc++ (typically used on Linux).

NB: there are newer versions available of both clang and libc++, you will have to use the versions suited for your system.

You may need to install additional packages for this, for example, on Linux Ubuntu 20.04 LTS with clang-12:

# install libc++ headers
sudo apt-get install libc++-12-dev libc++abi-12-dev

Here are sample steps to achieve this:

export CC=clang-12
export CXX=clang++-12
export CFLAGS="-O3 -g1 -fno-omit-frame-pointer"
export CXXFLAGS="$CFLAGS -stdlib=libc++"
git clone https://github.com/stellar/stellar-core.git
cd stellar-core/
./autogen.sh && ./configure && make -j6

Building with Tracing

Configuring with --enable-tracy will build and embed the client component of the Tracy high-resolution tracing system in the stellar-core binary.

The tracing client will activate automatically when stellar-core is running, and will listen for connections from Tracy servers (a command-line capture utility, or a cross-platform GUI).

You do not need to download the tracy server, and will likely run into versioning issues if you do. Instead, the Tracy server components can also be compiled by configuring with --enable-tracy-gui or --enable-tracy-capture. Once compiled, the tracy server can be started with ./tracy-gui or ./tracy, respectively.

The GUI depends on the capstone, freetype and glfw libraries and their headers, and on linux or BSD the GTK-2.0 libraries and headers. On Windows and MacOS, native toolkits are used instead.

# On Ubuntu
$ sudo apt-get install libcapstone-dev libfreetype6-dev libglfw3-dev libgtk2.0-dev

# On MacOS
$ brew install capstone freetype2 glfw