Building MongoDB
================

To build MongoDB, you will need:

* A modern C++ compiler. One of the following is required.
    * GCC 5.4.0 or newer
    * Clang 3.8 (or Apple XCode 8.3.2 Clang) or newer
    * Visual Studio 2015 Update 3 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 - apt-get install libcurl-dev
* Python 2.7.x and Pip modules:
  * pyyaml
  * typing
  * cheetah

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](http://golang.org/) and are no longer included in this repository.

The source for the tools is now available at [mongodb/mongo-tools](https://github.com/mongodb/mongo-tools).

Python Prerequisites
---------------

In order to build MongoDB, Python 2.7.x is required, and several Python modules. To install
the required Python modules, run:

    $ pip2 install -r etc/pip/compile-requirements.txt

Note: If the `pip2` command is not available, `pip` without a suffix may be the pip command
associated with Python 2.7.x.

SCons
---------------

For detail information about building, please see [the build manual](https://github.com/mongodb/mongo/wiki/Build-Mongodb-From-Source)

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

    $ python2 buildscripts/scons.py all

If you only want to build the database:

    $ python2 buildscripts/scons.py 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.

    $ python2 buildscripts/scons.py mongod --disable-warnings-as-errors

To install

    $ python2 buildscripts/scons.py --prefix=/opt/mongo install

Please note that prebuilt binaries are available on [mongodb.org](http://www.mongodb.org/downloads) and may be the easiest way to get started.

SCons Targets
--------------

* mongod
* mongos
* mongo
* core (includes mongod, mongos, mongo)
* all

Windows
--------------

See [the windows build manual](https://github.com/mongodb/mongo/wiki/Build-Mongodb-From-Source#windows-specific-instructions)

Build requirements:
* Visual Studio 2015 Update 2 or newer
* Python 2.7, ActiveState ActivePython 2.7.x Community Edition for Windows is recommended

If using VS 2015 Update 3, two hotfixes are required to build. For details, see:
* https://support.microsoft.com/en-us/help/3207317/visual-c-optimizer-fixes-for-visual-studio-2015-update-3
* https://support.microsoft.com/en-za/help/4020481/fix-link-exe-crashes-with-a-fatal-lnk1000-error-when-you-use-wholearch

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

Debian/Ubuntu
--------------

To install dependencies on Debian or Ubuntu systems:

    # aptitude install build-essential
    # aptitude install libboost-filesystem-dev libboost-program-options-dev libboost-system-dev libboost-thread-dev

To run tests as well, you will need PyMongo:

    # aptitude install python-pymongo

OS X
--------------

Using [Homebrew](http://brew.sh):

    $ brew install mongodb

Using [MacPorts](http://www.macports.org):

    $ sudo port install mongodb

FreeBSD
--------------

Install the following ports:

  * devel/libexecinfo
  * lang/clang38
  * lang/python

Optional Components if you want to use system libraries instead of the libraries included with MongoDB

  * archivers/snappy
  * lang/v8
  * devel/boost
  * devel/pcre

Add `CC=clang38 CXX=clang++38` to the `scons` options, when building.

OpenBSD
--------------
Install the following ports:

  * devel/libexecinfo
  * lang/gcc
  * lang/python

Special Build Notes
--------------
  * [open solaris on ec2](building.opensolaris.ec2.md)