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Building MongoDB

Please note that prebuilt binaries are available on mongodb.org and may be the easiest way to get started, rather than building from source.

To build MongoDB, you will need:

  • A modern C++ compiler capable of compiling C++20. One of the following is required:
    • GCC 11.3 or newer
    • Clang 12.0 (or Apple XCode 13.0 Clang) or newer
    • Visual Studio 2022 version 17.0 or newer (See Windows section below for details)
  • On Linux and macOS, the libcurl library and header is required. MacOS includes libcurl.
    • Fedora/RHEL - dnf install libcurl-devel
    • Ubuntu/Debian - libcurl-dev is provided by three packages. Install one of them:
      • libcurl4-openssl-dev
      • libcurl4-nss-dev
      • libcurl4-gnutls-dev
    • On Ubuntu, the lzma library is required. Install liblzma-dev
    • On Amazon Linux, the xz-devel library is required. yum install xz-devel
  • Python 3.10.x and Pip modules:
    • See the section "Python Prerequisites" below.
  • About 13 GB of free disk space for the core binaries (mongod, mongos, and mongo) and about 600 GB for the install-all target.

MongoDB supports the following architectures: arm64, ppc64le, s390x, and x86-64. More detailed platform instructions can be found below.

MongoDB Tools

The MongoDB command line tools (mongodump, mongorestore, mongoimport, mongoexport, etc) have been rewritten in Go and are no longer included in this repository.

The source for the tools is now available at mongodb/mongo-tools.

Python Prerequisites

In order to build MongoDB, Python 3.10+ is required, and several Python modules must be installed. Python 3 is included in macOS 10.15 and later. For earlier macOS versions, Python 3 can be installed using Homebrew or MacPorts or similar.

MongoDB manages our python dependencies with poetry. You can see other install instructions for poetry by reading this install guide.

Installing the requirements inside a python3 based virtualenv dedicated to building MongoDB is optional but recommended.

$ python3 -m venv <venv_path> --prompt mongo # Optional (venv_path can be a path of your choice)
$ source <venv_path>/bin/activate # Optional (might be slightly different based on the your shell)
$ python3 -m pip install 'poetry==1.5.1'
$ python3 -m poetry install --no-root --sync

Note: In order to compile C-based Python modules, you'll also need the Python and OpenSSL C headers. Run:

  • Fedora/RHEL - dnf install python3-devel openssl-devel
  • Ubuntu (20.04 and newer)/Debian (Bullseye and newer) - apt install python-dev-is-python3 libssl-dev
  • Ubuntu (18.04 and older)/Debian (Buster and older) - apt install python3.7-dev libssl-dev

Note: If you are seeing errors involving "Prompt dismissed.." you might need to run the following command before poetry install.

$ export PYTHON_KEYRING_BACKEND=keyring.backends.null.Keyring

SCons

If you only want to build the database server mongod:

$ python3 buildscripts/scons.py install-mongod

Note: For C++ compilers that are newer than the supported version, the compiler may issue new warnings that cause MongoDB to fail to build since the build system treats compiler warnings as errors. To ignore the warnings, pass the switch --disable-warnings-as-errors to scons.

$ python3 buildscripts/scons.py install-mongod --disable-warnings-as-errors

Note: On memory-constrained systems, you may run into an error such as g++: fatal error: Killed signal terminated program cc1plus. To use less memory during building, pass the parameter -j1 to scons. This can be incremented to -j2, -j3, and higher as appropriate to find the fastest working option on your system.

$ python3 buildscripts/scons.py install-mongod -j1

To install mongod directly to /opt/mongo

$ python3 buildscripts/scons.py DESTDIR=/opt/mongo install-mongod

To create an installation tree of the servers in /tmp/unpriv that can later be copied to /usr/priv

$ python3 buildscripts/scons.py DESTDIR=/tmp/unpriv PREFIX=/usr/priv install-servers

If you want to build absolutely everything (mongod, mongo, unit tests, etc):

$ python3 buildscripts/scons.py install-all-meta

SCons Targets

The following targets can be named on the scons command line to build and install a subset of components:

  • install-mongod
  • install-mongos
  • install-core (includes only mongod and mongos)
  • install-servers (includes all server components)
  • install-devcore (includes mongod, mongos, and jstestshell (formerly mongo shell))
  • install-all (includes a complete end-user distribution and tests)
  • install-all-meta (absolutely everything that can be built and installed)

NOTE: The install-core and install-servers targets are not guaranteed to be identical. The install-core target will only ever include a minimal set of "core" server components, while install-servers is intended for a functional end-user installation. If you are testing, you should use the install-core or install-devcore targets instead.

Where to find Binaries

The build system will produce an installation tree into $DESTDIR/$PREFIX. DESTDIR by default is build/install while PREFIX is by default empty. This means that with all of the listed targets all built binaries will be in build/install/bin by default.

Windows

Build requirements:

  • Visual Studio 2022 version 17.0 or newer
  • Python 3.10

Or download a prebuilt binary for Windows at www.mongodb.org.

Debian/Ubuntu

To install dependencies on Debian or Ubuntu systems:

# apt-get install build-essential

OS X

Install Xcode 13.0 or newer.

FreeBSD

Install the following ports:

  • devel/libexecinfo
  • lang/llvm70
  • lang/python

Add CC=clang12 CXX=clang++12 to the scons options, when building.

OpenBSD

Install the following ports:

  • devel/libexecinfo
  • lang/gcc
  • lang/python