The libmaxminddb library provides a C library for reading MaxMind DB files, including the GeoIP2 databases from MaxMind. This is a custom binary format designed to facilitate fast lookups of IP addresses while allowing for great flexibility in the type of data associated with an address.
The MaxMind DB format is an open format. The spec is available at http://maxmind.github.io/MaxMind-DB/. This spec is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License.
See http://dev.maxmind.com/ for more details about MaxMind's GeoIP2 products.
This library is licensed under the Apache License, Version 2.
From a Tarball
This code is known to work with GCC 4.4+ and clang 3.2+. It should also work
on other compilers that supports C99, POSIX.1-2001, and the
-fms-extensions flag (or equivalent). The latter is needed to allow an anonymous union in a
To install this code, run the following commands:
$ ./configure $ make $ make check $ sudo make install $ sudo ldconfig
You can skip the
make check step but it's always good to know that tests are
passing on your platform.
configure script takes the standard options to set where files are
installed such as
--prefix, etc. See
./configure --help for details.
If after installing, you receive an error that
libmaxminddb.so.0 is missing
you may need to add the
lib directory in your
prefix to your library path.
On most Linux distributions when using the default prefix (
can do this by running the following commands:
$ sudo sh -c "echo /usr/local/lib >> /etc/ld.so.conf.d/local.conf" $ ldconfig
From the Git Repository
To install from Git, you will need automake, autoconf, and libtool installed in addition to make and a compiler.
Our public git repository is hosted on GitHub at https://github.com/maxmind/libmaxminddb
You can clone this repository and build it by running:
$ git clone --recursive https://github.com/maxmind/libmaxminddb
After cloning, run
./bootstrap from the
libmaxminddb directory and then
follow the instructions for installing from a tarball as described above.
On Windows via Visual Studio 2013+
We provide a Visual Studio solution in
projects\VS12. This can be used to
build both the the library and the tests. Please see the
README.md file in
the same directory for more information.
On Ubuntu via PPA
MaxMind provides a PPA for recent version of Ubuntu. To add the PPA to your APT sources, run:
$ sudo add-apt-repository ppa:maxmind/ppa
Then install the packages by running:
$ sudo apt update $ sudo apt install libmaxminddb0 libmaxminddb-dev mmdb-bin
On OS X via Homebrew
If you are on OS X and you have homebrew (see http://brew.sh/) you can install libmaxminddb via brew.
$ brew install libmaxminddb
Please report bugs by filing an issue with our GitHub issue tracker at https://github.com/maxmind/libmaxminddb/issues
We have a few development tools under the
dev-bin directory to make
development easier. These are written in Perl or shell. They are:
regen-prototypes.pl- This regenerates the prototypes in the header and source files. This helps keep headers and code in sync.
uncrustify-all.sh- This runs
uncrustifyon all the code. It runs
regen-prototypes.plfirst. Please run this before submitting patches.
valgrind-all.pl- This runs Valgrind on the tests and
mmdblookupto check for memory leaks.
Creating a Release Tarball
make safedist to check the resulting tarball.
Copyright and License
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.